U.S. patent application number 14/972920 was filed with the patent office on 2017-06-22 for surgical instrument with multi-functioning trigger.
The applicant listed for this patent is Ethicon Endo-Surgery, LLC. Invention is credited to Benjamin M. Boyd, David J. Cagle, Christopher J. Chermside-Scabbo, Benjamin J. Danziger, Craig N. Faller, Allison Hamilton, Kevin L. Houser, Rudolph H. Nobis, Paul F. Riestenberg, Charles J. Scheib, Geoffrey S. Strobl, Patrick J. Swindon.
Application Number | 20170172614 14/972920 |
Document ID | / |
Family ID | 57861225 |
Filed Date | 2017-06-22 |
United States Patent
Application |
20170172614 |
Kind Code |
A1 |
Scheib; Charles J. ; et
al. |
June 22, 2017 |
SURGICAL INSTRUMENT WITH MULTI-FUNCTIONING TRIGGER
Abstract
A surgical instrument includes an end effector and a handle
assembly. The end effector is configured to operate at a first
energy level and at a second energy level. The end effector is
further configured to transition between an open position and a
closed position. The end effector is configured to grasp tissue in
the closed position. The handle assembly includes a body, a
trigger, and an activation element. The trigger is configured to
pivot in a first direction relative to the body to actuate the end
effector from the open position to the closed position. The
activation element is configured to activate the end effector at
either the first energy level or the second energy level. The
trigger is configured to either activate the activation element or
determine whether the end effector operates at the first energy
level or the second energy level.
Inventors: |
Scheib; Charles J.;
(Loveland, OH) ; Boyd; Benjamin M.; (Fairborn,
OH) ; Riestenberg; Paul F.; (North Bend, OH) ;
Faller; Craig N.; (Batavia, OH) ; Hamilton;
Allison; (Cincinnati, OH) ; Swindon; Patrick J.;
(Santa Clara, CA) ; Chermside-Scabbo; Christopher J.;
(St. Louis, MO) ; Houser; Kevin L.; (Springboro,
OH) ; Cagle; David J.; (Cincinnati, OH) ;
Strobl; Geoffrey S.; (Williamsburg, OH) ; Danziger;
Benjamin J.; (Cincinnati, OH) ; Nobis; Rudolph
H.; (Mason, OH) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Ethicon Endo-Surgery, LLC |
Guaynabo |
PR |
US |
|
|
Family ID: |
57861225 |
Appl. No.: |
14/972920 |
Filed: |
December 17, 2015 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
A61B 2017/00137
20130101; A61B 2017/00411 20130101; A61B 2018/00619 20130101; A61B
2017/320093 20170801; A61B 17/320092 20130101; A61B 2018/00595
20130101; A61N 2007/0056 20130101; A61B 2017/00181 20130101; A61B
2018/0063 20130101; A61B 2017/00367 20130101; A61B 2017/320095
20170801; A61N 7/02 20130101; A61B 2017/320094 20170801 |
International
Class: |
A61B 17/32 20060101
A61B017/32; A61N 7/02 20060101 A61N007/02 |
Claims
1. A surgical instrument, comprising: (a) an end effector, wherein
the end effector is configured to operate at a first energy level
and at a second energy level, wherein the end effector is further
configured to transition between an open position and a closed
position, wherein the end effector is configured to grasp tissue in
the closed position; and (b) a handle assembly, wherein the handle
assembly comprises: (i) a body, (ii) a trigger pivotally coupled to
the body, wherein the trigger is configured to pivot in a first
direction relative to the body to actuate the end effector from the
open position to the closed position, and (iii) an activation
element, wherein the activation element is in communication with
the end effector, wherein the activation element is configured to
activate the end effector at either the first energy level or the
second energy level, wherein the trigger is configured to either
activate the activation element or determine whether the end
effector operates at the first energy level or the second energy
level.
2. The surgical instrument of claim 1, wherein the trigger is
configured to pivot in the first direction to a first position,
wherein the trigger is configured to pivot further in the first
direction to a second position, wherein the end effector is
configured to operate at the first energy level when the trigger is
located at the first position, wherein the end effector is
configured to operate at the second energy level when the trigger
is located at the second position.
3. The surgical instrument of claim 2, wherein the body further
comprises a first switch and a second switch, wherein the trigger
is configured to activate the first switch when the trigger reaches
the first position, wherein the trigger is configured to activate
the second switch when the trigger reaches the second position.
4. The surgical instrument of claim 2, wherein the body comprises a
Hall Effect sensor, wherein the trigger comprises a magnet, wherein
the Hall Effect sensor is configured to determine if the trigger is
in the first position or the second position.
5. The surgical instrument of claim 2, wherein the body comprises a
force transducer, wherein the force transducer is configured to
determine if the trigger is in the first position or the second
position.
6. The surgical instrument of claim 1, wherein the body comprises a
damping system, wherein the activation element is coupled with the
damping system, wherein the damping system is configured to prevent
activation of the activation element if the trigger contacts the
activation element at a velocity above a threshold.
7. The surgical instrument of claim 1, wherein the body further
comprises: (i) a pistol grip defining a first slot and a second
slot, (ii) a first movable button housed within the first slot,
wherein the first movable button is configured to move from an
activated state to a deactivated state, and (iii) a second movable
button housed within the second slot, wherein the second movable
button is configured to move from an activated state to a
deactivated state.
8. The surgical instrument of claim 7, wherein the trigger is
configured to pivot in the first direction toward the pistol grip
to contact the first moveable button or the second movable button
when the first moveable button or the second movable button are in
the activated state.
9. The surgical instrument of claim 8, wherein the first movable
button is configured to rotate about a pivot in the first slot.
10. The surgical instrument of claim 8, wherein the first movable
button is configured to alter the functionality of the end effector
when the trigger contacts the first movable button in the activated
state.
11. The surgical instrument of claim 1, wherein the trigger
comprises a first grip and a second grip, wherein the first grip is
configured to actuate the end effector from the open position to
the closed position, wherein the second grip is configured to
activate the activation element.
12. The surgical instrument of claim 11, wherein the first grip is
configured to move independently of the second grip.
13. The surgical instrument of claim 11, wherein the first grip and
the second grip are configured to travel together though a first
range of motion, wherein the second grip is configured to travel
through a second range of motion independent of the first grip.
14. The surgical instrument of claim 1, wherein the trigger is
further configured to move in a second direction relative to the
body, wherein the trigger is configured to determine whether the
end effector operates at the first energy level or the second
energy level based on a position of the trigger in the second
direction.
15. The surgical instrument of claim 14, wherein the body further
comprise a mode selection frame, wherein a portion of the trigger
is housed within the mode selection frame.
16. The surgical instrument of claim 15, wherein the mode selection
frame comprises a mode selection channel, a first energy channel,
and a second energy channel, wherein the portion of the trigger
housed within the mode selection frame is configured to travel in
the mode selection channel when the trigger moves in the second
direction, wherein the portion of the trigger housed within the
mode selection frame is configured to travel in either the first
energy channel or the second energy channel when the trigger moves
in the first direction.
17. The surgical instrument of claim 16, wherein the trigger is
configured to pivot relative to the body while moving in the second
direction.
18. A surgical instrument, comprising: (a) an end effector, wherein
the end effector is configured to operate at a first energy level
and at a second energy level, wherein the end effector is further
configured to transition between an open position and a closed
position, wherein the end effector is configured to grasp tissue in
the closed position; and (b) a handle assembly, wherein the handle
assembly comprises: (i) a body comprising a first button, a second
button, and a third button, wherein each button is configured to
provide a respective activated state of the end effector, and (ii)
a trigger assembly pivotally coupled to the body, wherein the
trigger assembly further comprises: (A) a first trigger configured
pivot from a first open position to a first closed position,
wherein the first trigger is configured to contact the first button
in the first closed position, (B) a second trigger configured to
pivot from a second open position to a second closed position,
wherein the second trigger is configured to contact the second
button in the second closed position, wherein the second trigger is
shorter than the first trigger, and (C) a third trigger configured
to pivot from a third open position to a third closed position,
wherein the third trigger is configured to contact the third button
in the third closed position, wherein the third trigger is short
than the second trigger.
19. The surgical instrument of claim 18, wherein at least one of
the first trigger, the second trigger, or the third trigger is
further operable to transition the end effector from the open
position to the closed position.
20. A surgical instrument, comprising: (a) an end effector, wherein
the end effector is configured to operate at a first energy level
and at a second energy level, wherein the end effector is further
configured to transition between an open position and a closed
position, wherein the end effector is configured to grasp tissue in
the closed position; and (b) a handle assembly, wherein the handle
assembly comprises: (i) a body, (ii) a trigger pivotally coupled to
the body, wherein the trigger is configured to pivot in a first
direction relative to the body to actuate the end effector from the
open position to the closed position, wherein the trigger is
configured to actuate in a second direction relative to the body to
select whether the end effector operates at the first energy level
or the second energy level, and (iii) an activation element,
wherein the activation element is in communication with the end
effector, wherein the activation element is configured to activate
the end effector at either the first energy level or the second
energy level.
Description
BACKGROUND
[0001] A variety of surgical instruments include an end effector
having a blade element that vibrates at ultrasonic frequencies to
cut and/or seal tissue (e.g., by denaturing proteins in tissue
cells). These instruments include one or more piezoelectric
elements that convert electrical power into ultrasonic vibrations,
which are communicated along an acoustic waveguide to the blade
element. The precision of cutting and coagulation may be controlled
by the operator's technique and adjusting the power level, blade
edge angle, tissue traction, and blade pressure. Some instruments
have a clamp arm and clamp pad for grasping tissue with the blade
element.
[0002] Examples of ultrasonic surgical instruments include the
HARMONIC ACE.RTM. Ultrasonic Shears, the HARMONIC WAVE.RTM.
Ultrasonic Shears, the HARMONIC FOCUS.RTM. Ultrasonic Shears, and
the HARMONIC SYNERGY.RTM. Ultrasonic Blades, all by Ethicon
Endo-Surgery, Inc. of Cincinnati, Ohio. Further examples of such
devices and related concepts are disclosed in U.S. Pat. No.
5,322,055, entitled "Clamp Coagulator/Cutting System for Ultrasonic
Surgical Instruments," issued Jun. 21, 1994, the disclosure of
which is incorporated by reference herein; U.S. Pat. No. 5,873,873,
entitled "Ultrasonic Clamp Coagulator Apparatus Having Improved
Clamp Mechanism," issued Feb. 23, 1999, the disclosure of which is
incorporated by reference herein; U.S. Pat. No. 5,980,510, entitled
"Ultrasonic Clamp Coagulator Apparatus Having Improved Clamp Arm
Pivot Mount," issued Nov. 9, 1999, the disclosure of which is
incorporated by reference herein; U.S. Pat. No. 6,283,981, entitled
"Method of Balancing Asymmetric Ultrasonic Surgical Blades," issued
Sep. 4, 2001, the disclosure of which is incorporated by reference
herein; U.S. Pat. No. 6,309,400, entitled "Curved Ultrasonic Blade
having a Trapezoidal Cross Section," issued Oct. 30, 2001, the
disclosure of which is incorporated by reference herein; U.S. Pat.
No. 6,325,811, entitled "Blades with Functional Balance Asymmetries
for use with Ultrasonic Surgical Instruments," issued Dec. 4, 2001,
the disclosure of which is incorporated by reference herein; U.S.
Pat. No. 6,423,082, entitled "Ultrasonic Surgical Blade with
Improved Cutting and Coagulation Features," issued Jul. 23, 2002,
the disclosure of which is incorporated by reference herein; U.S.
Pat. No. 6,773,444, entitled "Blades with Functional Balance
Asymmetries for Use with Ultrasonic Surgical Instruments," issued
Aug. 10, 2004, the disclosure of which is incorporated by reference
herein; U.S. Pat. No. 6,783,524, entitled "Robotic Surgical Tool
with Ultrasound Cauterizing and Cutting Instrument," issued Aug.
31, 2004, the disclosure of which is incorporated by reference
herein; U.S. Pat. No. 8,057,498, entitled "Ultrasonic Surgical
Instrument Blades," issued Nov. 15, 2011, the disclosure of which
is incorporated by reference herein; U.S. Pat. No. 8,461,744,
entitled "Rotating Transducer Mount for Ultrasonic Surgical
Instruments," issued Jun. 11, 2013, the disclosure of which is
incorporated by reference herein; U.S. Pat. No. 8,591,536, entitled
"Ultrasonic Surgical Instrument Blades," issued Nov. 26, 2013, the
disclosure of which is incorporated by reference herein; and U.S.
Pat. No. 8,623,027, entitled "Ergonomic Surgical Instruments,"
issued Jan. 7, 2014, the disclosure of which is incorporated by
reference herein.
[0003] Still further examples of ultrasonic surgical instruments
are disclosed in U.S. Pub. No. 2006/0079874, entitled "Clamp pad
for Use with an Ultrasonic Surgical Instrument," published Apr. 13,
2006, the disclosure of which is incorporated by reference herein;
U.S. Pub. No. 2007/0191713, entitled "Ultrasonic Device for Cutting
and Coagulating," published Aug. 16, 2007, the disclosure of which
is incorporated by reference herein; U.S. Pub. No. 2007/0282333,
entitled "Ultrasonic Waveguide and Blade," published Dec. 6, 2007,
the disclosure of which is incorporated by reference herein; U.S.
Pub. No. 2008/0200940, entitled "Ultrasonic Device for Cutting and
Coagulating," published Aug. 21, 2008, the disclosure of which is
incorporated by reference herein; U.S. Pub. No. 2008/0234710,
entitled "Ultrasonic Surgical Instruments," published Sep. 25,
2008, the disclosure of which is incorporated by reference herein;
and U.S. Pub. No. 2010/0069940, entitled "Ultrasonic Device for
Fingertip Control," published Mar. 18, 2010, the disclosure of
which is incorporated by reference herein.
[0004] Some ultrasonic surgical instruments may include a cordless
transducer such as that disclosed in U.S. Pub. No. 2012/0112687,
entitled "Recharge System for Medical Devices," published May 10,
2012, the disclosure of which is incorporated by reference herein;
U.S. Pub. No. 2012/0116265, entitled "Surgical Instrument with
Charging Devices," published May 10, 2012, the disclosure of which
is incorporated by reference herein; and/or U.S. Pat. App. No.
61/410,603, filed Nov. 5, 2010, entitled "Energy-Based Surgical
Instruments," the disclosure of which is incorporated by reference
herein.
[0005] Additionally, some ultrasonic surgical instruments may
include an articulating shaft section. Examples of such ultrasonic
surgical instruments are disclosed in U.S. Pub. No. 2014/0005701,
published Jan. 2, 2014, entitled "Surgical Instruments with
Articulating Shafts," the disclosure of which is incorporated by
reference herein; and U.S. Pub. No. 2014/0114334, published Apr.
24, 2014, entitled "Flexible Harmonic Waveguides/Blades for
Surgical Instruments," the disclosure of which is incorporated by
reference herein.
[0006] While several surgical instruments and systems have been
made and used, it is believed that no one prior to the inventors
has made or used the invention described in the appended
claims.
BRIEF DESCRIPTION OF THE DRAWINGS
[0007] While the specification concludes with claims which
particularly point out and distinctly claim this technology, it is
believed this technology will be better understood from the
following description of certain examples taken in conjunction with
the accompanying drawings, in which like reference numerals
identify the same elements and in which:
[0008] FIG. 1 depicts a block schematic view of an exemplary
surgical system;
[0009] FIG. 2 depicts a side elevational view of an exemplary
surgical instrument that may be incorporated into the system of
FIG. 1;
[0010] FIG. 3 depicts a cross-sectional side view of an end
effector of the instrument of FIG. 2 in a closed configuration;
[0011] FIG. 4 depicts a cross-sectional side view of the end
effector of FIG. 3 in an open configuration;
[0012] FIG. 5 depicts a cross-sectional side view of a handle
assembly of the instrument of FIG. 2;
[0013] FIG. 6A depicts a side elevational view of another exemplary
surgical instrument that may be incorporated into the system of
FIG. 1, where the trigger is in a first position;
[0014] FIG. 6B depicts a side elevation view of the surgical
instrument of FIG. 6A, where the trigger is in a second
position;
[0015] FIG. 6C depicts a side elevational view of the surgical
instrument of FIG. 6A, where the trigger is in a third
position;
[0016] FIG. 7A depicts a side elevational view of another exemplary
surgical instrument that may be incorporated into the system of
FIG. 1, where the trigger is in a first position;
[0017] FIG. 7B depicts a side elevational view of the surgical
instrument of FIG. 7A, where the trigger is in a second
position;
[0018] FIG. 7C depicts a side elevational view of the surgical
instrument of FIG. 7A, where the trigger is in a third
position;
[0019] FIG. 8A depicts a side elevational view of another exemplary
surgical instrument that may be incorporated into the system of
FIG. 1, where the trigger is in a first position;
[0020] FIG. 8B depicts a side elevational view of the surgical
instrument of FIG. 8A, where the trigger is in a second
position;
[0021] FIG. 8C depicts a side elevational view of the surgical
instrument of FIG. 8A, where the trigger is in a third
position;
[0022] FIG. 9A depicts a side elevational view of another exemplary
surgical instrument that may be incorporated into the system of
FIG. 1, where in trigger is in a first position and the movable
buttons are in a first configuration;
[0023] FIG. 9B depicts a side elevational view of the surgical
instrument of FIG. 9A, where the trigger is in a second position
and the movable buttons are in the first configuration;
[0024] FIG. 9C depicts a side elevational view of the surgical
instrument of FIG. 9A, where the trigger is in a third position and
the movable buttons are in the first configuration;
[0025] FIG. 10 depicts a side elevational view of the surgical
instrument of FIG. 9A, where the trigger is in the first position
and the movable buttons are in a second configuration;
[0026] FIG. 11 depicts a side elevational view of the surgical
instrument of FIG. 9A, where the trigger is in the first position
and the movable buttons are in a third configuration;
[0027] FIG. 12A depicts a side elevational view of another
exemplary surgical instrument that may be incorporated into the
system of FIG. 1, where the trigger is a in a first position;
[0028] FIG. 12B depicts a side elevational view of the surgical
instrument of FIG. 12A, where the trigger is in a second
position;
[0029] FIG. 12C depicts a side elevational view of the surgical
instrument of FIG. 12A, where the trigger is in a third
position;
[0030] FIG. 13A depicts a side elevational view of another
exemplary surgical instrument that may be incorporated into the
system of FIG. 1, where the trigger is in a first position;
[0031] FIG. 13B depicts a side elevational view of the surgical
instrument of FIG. 13A, where the trigger is in a second
position;
[0032] FIG. 13C depicts a side elevational view of the surgical
instrument of FIG. 13A, where the trigger is in a third
position;
[0033] FIG. 14A depicts a side elevational view of another
exemplary surgical instrument that may be incorporated into the
system of FIG. 1, where the trigger is in a first position;
[0034] FIG. 14B depicts a side elevational view of the surgical
instrument of FIG. 14A, where the trigger is in a second
position;
[0035] FIG. 14C depicts a side elevational view of the surgical
instrument of FIG. 14A, where the trigger is in a third
position;
[0036] FIG. 15A depicts a side elevational view of another surgical
instrument that may be incorporated into the system of FIG. 1,
where the trigger is in a first longitudinal position;
[0037] FIG. 15B depicts a side elevational view of the surgical
instrument of FIG. 15A, where the trigger is in a second
longitudinal position;
[0038] FIG. 16A depicts a cross-sectional view of the surgical
instrument of FIG. 15A taken along line 16A-16A of FIG. 15A, where
the trigger is in a first lateral position;
[0039] FIG. 16B depicts a cross-sectional view of the surgical
instrument of FIG. 15A taken along the line 16B-16B of FIG. 15B,
where the trigger in a first lateral position;
[0040] FIG. 17A depicts a cross-sectional view of the surgical
instrument of FIG. 15A taken along line 16A-16A of FIG. 15A, where
the trigger is in a second lateral position;
[0041] FIG. 17B depicts a cross-sectional view of the surgical
instrument of FIG. 15A taken along line 16B-16B of FIG. 15B, where
the trigger is in a second lateral position;
[0042] FIG. 18A depicts a cross-sectional view of the surgical
instrument of FIG. 15A taken along line 16A-16A of FIG. 15A, where
the trigger is in a third lateral position;
[0043] FIG. 18B depicts a cross-sectional view of the surgical
instrument of FIG. 15A taken along line 16B-16B of FIG. 15B, where
the trigger is in a third lateral position;
[0044] FIG. 19A depicts a side elevational view of another
exemplary surgical instrument that may be incorporated into the
system of FIG. 1, where the trigger is in a first position;
[0045] FIG. 19B depicts a side elevational view of the surgical
instrument of FIG. 19A, were the trigger is in a second
position;
[0046] FIG. 19C depicts a side elevational view of the surgical
instrument of FIG. 19A, where the trigger is in a third
position;
[0047] FIG. 19D depicts a side elevational view of the surgical
instrument of FIG. 19A, where the trigger is in a fourth position;
and
[0048] FIG. 20 depicts a cross-sectional view of the surgical
instrument of FIG. 19A taken along line 20-20 of FIG. 19A.
[0049] The drawings are not intended to be limiting in any way, and
it is contemplated that various embodiments of the technology may
be carried out in a variety of other ways, including those not
necessarily depicted in the drawings. The accompanying drawings
incorporated in and forming a part of the specification illustrate
several aspects of the present technology, and together with the
description serve to explain the principles of the technology; it
being understood, however, that this technology is not limited to
the precise arrangements shown.
DETAILED DESCRIPTION
[0050] The following description of certain examples of the
technology should not be used to limit its scope. Other examples,
features, aspects, embodiments, and advantages of the technology
will become apparent to those skilled in the art from the following
description, which is by way of illustration, one of the best modes
contemplated for carrying out the technology. As will be realized,
the technology described herein is capable of other different and
obvious aspects, all without departing from the technology.
Accordingly, the drawings and descriptions should be regarded as
illustrative in nature and not restrictive.
[0051] It is further understood that any one or more of the
teachings, expressions, embodiments, examples, etc. described
herein may be combined with any one or more of the other teachings,
expressions, embodiments, examples, etc. that are described herein.
The following-described teachings, expressions, embodiments,
examples, etc. should therefore not be viewed in isolation relative
to each other. Various suitable ways in which the teachings herein
may be combined will be readily apparent to those of ordinary skill
in the art in view of the teachings herein. Such modifications and
variations are intended to be included within the scope of the
claims.
[0052] For clarity of disclosure, the terms "proximal" and "distal"
are defined herein relative to an operator or other operator
grasping a surgical instrument having a distal surgical end
effector. The term "proximal" refers to the position of an element
closer to the operator or other operator and the term "distal"
refers to the position of an element closer to the surgical end
effector of the surgical instrument and further away from the
operator or other operator.
I. OVERVIEW OF EXEMPLARY ULTRASONIC SURGICAL SYSTEM
[0053] FIG. 1 shows components of an exemplary surgical system (10)
in diagrammatic block form. As shown, system (10) comprises an
ultrasonic generator (12) and an ultrasonic surgical instrument
(20). As will be described in greater detail below, instrument (20)
is operable to cut tissue and seal or weld tissue (e.g., a blood
vessel, etc.) substantially simultaneously, using ultrasonic
vibrational energy. Generator (12) and instrument (20) are coupled
together via a cable (14). Cable (14) may comprise a plurality of
wires; and may provide unidirectional electrical communication from
generator (12) to instrument (20) and/or bidirectional electrical
communication between generator (12) and instrument (20). By way of
example only, cable (14) may comprise a "hot" wire for electrical
power to surgical instrument (20), a ground wire, and a signal wire
for transmitting signals from surgical instrument (20) to
ultrasonic generator (12), with a shield surrounding the three
wires. In some versions, separate "hot" wires are used for separate
activation voltages (e.g., one "hot" wire for a first activation
voltage and another "hot" wire for a second activation voltage, or
a variable voltage between the wires proportional to the power
requested, etc.). Of course, any other suitable number or
configuration of wires may be used. It should also be understood
that some versions of system (10) may incorporate generator (12)
into instrument (20), such that cable (14) may simply be
omitted.
[0054] By way of example only, generator (12) may comprise the
GEN04, GEN11, or GEN 300 sold by Ethicon Endo-Surgery, Inc. of
Cincinnati, Ohio. In addition or in the alternative, generator (12)
may be constructed in accordance with at least some of the
teachings of U.S. Pub. No. 2011/0087212, entitled "Surgical
Generator for Ultrasonic and Electrosurgical Devices," published
Apr. 14, 2011, the disclosure of which is incorporated by reference
herein. Alternatively, any other suitable generator may be used. As
will be described in greater detail below, generator (12) is
operable to provide power to instrument (20) to perform ultrasonic
surgical procedures.
[0055] Instrument (20) comprises a handle assembly (22), which is
configured to be grasped in one hand (or two hands) of an operator
and manipulated by one hand (or two hands) of the operator during a
surgical procedure. For instance, in some versions, handle assembly
(22) may be grasped like a pencil by the operator. In some other
versions, handle assembly (22) may include a scissor grip that may
be grasped like scissors by the operator. In some other versions,
handle assembly (22) may include a pistol grip that may be grasped
like a pistol by the operator. Of course, handle assembly (22) may
be configured to be gripped in any other suitable fashion.
Furthermore, some versions of instrument (20) may substitute handle
assembly (22) with a body that is coupled to a robotic surgical
system that is configured to operate instrument (20) (e.g., via
remote control, etc.). In the present example, a blade (24) extends
distally from handle assembly (22). Handle assembly (22) includes
an ultrasonic transducer (26) and an ultrasonic waveguide (28),
which couples ultrasonic transducer (26) with blade (24).
Ultrasonic transducer (26) receives electrical power from generator
(12) via cable (14). By virtue of its piezoelectric properties,
ultrasonic transducer (26) is operable to convert such electrical
power into ultrasonic vibrational energy.
[0056] Ultrasonic waveguide (28) may be flexible, semi-flexible,
rigid, or have any other suitable properties. As noted above,
ultrasonic transducer (26) is integrally coupled with blade (24)
via ultrasonic waveguide (28). In particular, when ultrasonic
transducer (26) is activated to vibrate at ultrasonic frequencies,
such vibrations are communicated through ultrasonic waveguide (28)
to blade (24), such that blade (24) will also vibrate at ultrasonic
frequencies. When blade (24) is in an activated state (i.e.,
vibrating ultrasonically), blade (24) is operable to effectively
cut through tissue and seal tissue. Ultrasonic transducer (26),
ultrasonic waveguide (28), and blade (24) together thus form an
acoustic assembly providing ultrasonic energy for surgical
procedures when powered by generator (12). Handle assembly (22) is
configured to substantially isolate the operator from the
vibrations of the acoustic assembly formed by transducer (26),
ultrasonic waveguide (28), and blade (24).
[0057] In some versions, ultrasonic waveguide (28) may amplify the
mechanical vibrations transmitted through ultrasonic waveguide (28)
to blade (24). Ultrasonic waveguide (28) may further have features
to control the gain of the longitudinal vibration along ultrasonic
waveguide (28) and/or features to tune ultrasonic waveguide (28) to
the resonant frequency of system (10). For instance, ultrasonic
waveguide (28) may have any suitable cross-sectional
dimensions/configurations, such as a substantially uniform
cross-section, be tapered at various sections, be tapered along its
entire length, or have any other suitable configuration. Ultrasonic
waveguide (28) may, for example, have a length substantially equal
to an integral number of one-half system wavelengths (n.lamda./2).
Ultrasonic waveguide (28) and blade (24) may be fabricated from a
solid core shaft constructed out of a material or combination of
materials that propagates ultrasonic energy efficiently, such as
titanium alloy (i.e., Ti-6Al-4V), aluminum alloys, sapphire,
stainless steel, or any other acoustically compatible material or
combination of materials.
[0058] In the present example, the distal end of blade (24) is
located at a position corresponding to an anti-node associated with
resonant ultrasonic vibrations communicated through waveguide (28)
(i.e., at an acoustic anti-node), in order to tune the acoustic
assembly to a preferred resonant frequency f.sub.o when the
acoustic assembly is not loaded by tissue. When transducer (26) is
energized, the distal end of blade (24) is configured to move
longitudinally in the range of, for example, approximately 10 to
500 microns peak-to-peak, and in some instances in the range of
about 20 to about 200 microns at a predetermined vibratory
frequency f.sub.o of, for example, 55.5 kHz. When transducer (26)
of the present example is activated, these mechanical oscillations
are transmitted through waveguide (28) to reach blade (24), thereby
providing oscillation of blade (24) at the resonant ultrasonic
frequency. Thus, the ultrasonic oscillation of blade (24) may
simultaneously sever the tissue and denature the proteins in
adjacent tissue cells, thereby providing a coagulative effect with
relatively little thermal spread. In some versions, an electrical
current may also be provided through blade (24) to also cauterize
the tissue.
[0059] By way of example only, ultrasonic waveguide (28) and blade
(24) may comprise components sold under product codes SNGHK and
SNGCB by Ethicon Endo-Surgery, Inc. of Cincinnati, Ohio. By way of
further example only, ultrasonic waveguide (28) and/or blade (24)
may be constructed and operable in accordance with the teachings of
U.S. Pat. No. 6,423,082, entitled "Ultrasonic Surgical Blade with
Improved Cutting and Coagulation Features," issued Jul. 23, 2002,
the disclosure of which is incorporated by reference herein. As
another merely illustrative example, ultrasonic waveguide (28)
and/or blade (24) may be constructed and operable in accordance
with the teachings of U.S. Pat. No. 5,324,299, entitled "Ultrasonic
Scalpel Blade and Methods of Application," issued Jun. 28, 1994,
the disclosure of which is incorporated by reference herein. Other
suitable properties and configurations of ultrasonic waveguide (28)
and blade (24) will be apparent to those of ordinary skill in the
art in view of the teachings herein.
[0060] Handle assembly (22) of the present example also includes a
control selector (30) and an activation switch (32), which are each
in communication with a circuit board (34). By way of example only,
circuit board (34) may comprise a conventional printed circuit
board, a flex circuit, a rigid-flex circuit, or may have any other
suitable configuration. Control selector (30) and activation switch
(32) may be in communication with circuit board (34) via one or
more wires, traces formed in a circuit board or flex circuit,
and/or in any other suitable fashion. Circuit board (34) is coupled
with cable (14), which is in turn coupled with control circuitry
(16) within generator (12). Activation switch (32) is operable to
selectively activate power to ultrasonic transducer (26). In
particular, when switch (32) is activated, such activation provides
communication of appropriate power to ultrasonic transducer (26)
via cable (14). By way of example only, activation switch (32) may
be constructed in accordance with any of the teachings of the
various references cited herein. Other various forms that
activation switch (32) may take will be apparent to those of
ordinary skill in the art in view of the teachings herein.
[0061] In the present example, surgical system (10) is operable to
provide at least two different levels or types of ultrasonic energy
(e.g., different frequencies and/or amplitudes, etc.) at blade
(24). To that end, control selector (30) is operable to permit the
operator to select a desired level/amplitude of ultrasonic energy.
By way of example only, control selector (30) may be constructed in
accordance with any of the teachings of the various references
cited herein. Other various forms that control selector (30) may
take will be apparent to those of ordinary skill in the art in view
of the teachings herein. In some versions, when an operator makes a
selection through control selector (30), the operator's selection
is communicated back to control circuitry (16) of the generator
(12) via cable (14), and control circuitry (16) adjusts the power
communicated from generator (12) accordingly the next time the
operator actuates activation switch (32).
[0062] It should be understood that the level/amplitude of
ultrasonic energy provided at blade (24) may be a function of
characteristics of the electrical power communicated from generator
(12) to instrument (20) via cable (14). Thus, control circuitry
(16) of generator (12) may provide electrical power (via cable
(14)) having characteristics associated with the ultrasonic energy
level/amplitude or type selected through control selector (30).
Generator (12) may thus be operable to communicate different types
or degrees of electrical power to ultrasonic transducer (26), in
accordance with selections made by the operator via control
selector (30). In particular, and by way of example only, generator
(12) may increase the voltage and/or current of the applied signal
to increase the longitudinal amplitude of the acoustic assembly. As
a merely illustrative example, generator (12) may provide
selectability between a "level 1" and a "level 5," which may
correspond with blade (24) vibrational resonance amplitude of
approximately 50 microns and approximately 90 microns,
respectively. Various ways in which control circuitry (16) may be
configured will be apparent to those of ordinary skill in the art
in view of the teachings herein. It should also be understood that
control selector (30) and activation switch (32) may be substituted
with two or more activation switches (32). In some such versions,
one activation switch (32) is operable to activate blade (24) at
one power level/type while another activation switch (32) is
operable to activate blade (24) at another power level/type,
etc.
[0063] In some alternative versions, control circuitry (16) is
located within handle assembly (22). For instance, in some such
versions, generator (12) only communicates one type of electrical
power (e.g., just one voltage and/or current available) to handle
assembly (22), and control circuitry (16) within handle assembly
(22) is operable to modify the electrical power (e.g., the voltage
of the electrical power), in accordance with selections made by the
operator via control selector (30), before the electrical power
reaches ultrasonic transducer (26). Furthermore, generator (12) may
be incorporated into handle assembly (22) along with all other
components of surgical system (10). For instance, one or more
batteries (not shown) or other portable sources of power may be
provided in handle assembly (22). Still other suitable ways in
which the components depicted in FIG. 1 may be rearranged or
otherwise configured or modified will be apparent to those of
ordinary skill in the art in view of the teachings herein.
II. OVERVIEW OF EXEMPLARY ULTRASONIC SURGICAL INSTRUMENT
[0064] The following discussion relates to various exemplary
components and configurations of surgical instrument (20). It
should be understood that the various examples of surgical
instrument (20) described below may be readily incorporated into
surgical system (10) as described above. It should also be
understood that the various components and operabilities of
surgical instrument (20) described above may be readily
incorporated into the exemplary versions of surgical instrument
(20) described below. Various suitable ways in which the above and
below teachings may be combined will be apparent to those of
ordinary skill in the art in view of the teachings herein. It
should also be understood that the below teachings may be readily
combined with the various teachings of the references that are
cited herein.
[0065] FIGS. 2-5 illustrate an exemplary ultrasonic surgical
instrument (100). At least part of surgical instrument (100) may be
constructed and operable in accordance with at least some of the
teachings of U.S. Pat. No. 5,322,055; U.S. Pat. No. 5,873,873; U.S.
Pat. No. 5,980,510; U.S. Pat. No. 6,325,811; U.S. Pat. No.
6,773,444; U.S. Pat. No. 6,783,524; U.S. Pat. No. 8,461,744; U.S.
Pat. No. 8,623,027; U.S. Pub. No. 2006/0079874; U.S. Pub. No.
2007/0191713; U.S. Pub. No. 2007/0282333; U.S. Pub. No.
2008/0200940; U.S. Pub. No. 2010/0069940; U.S. Pub. No.
2012/0112687; U.S. Pub. No. 2012/0116265; U.S. Pub. No.
2014/0005701; U.S. Pub. No. 2014/0114334; U.S. Pat. App. No.
61/410,603; and/or U.S. patent application Ser. No. 14/028,717. The
disclosures of each of the foregoing patents, publications, and
applications are incorporated by reference herein. As described
therein and as will be described in greater detail below, surgical
instrument (100) is operable to cut tissue and seal or weld tissue
(e.g., a blood vessel, etc.) substantially simultaneously. It
should also be understood that surgical instrument (100) may have
various structural and functional similarities with the HARMONIC
ACE.RTM. Ultrasonic Shears, the HARMONIC WAVE.RTM. Ultrasonic
Shears, the HARMONIC FOCUS.RTM. Ultrasonic Shears, and/or the
HARMONIC SYNERGY.RTM. Ultrasonic Blades. Furthermore, surgical
instrument (100) may have various structural and functional
similarities with the devices taught in any of the other references
that are cited and incorporated by reference herein.
[0066] To the extent that there is some degree of overlap between
the teachings of the references cited herein, the HARMONIC ACE.RTM.
Ultrasonic Shears, the HARMONIC WAVE.RTM. Ultrasonic Shears, the
HARMONIC FOCUS.RTM. Ultrasonic Shears, and/or the HARMONIC
SYNERGY.RTM. Ultrasonic Blades, and the following teachings
relating to surgical instrument (100), there is no intent for any
of the description herein to be presumed as admitted prior art.
Several teachings herein will in fact go beyond the scope of the
teachings of the references cited herein and the HARMONIC ACE.RTM.
Ultrasonic Shears, the HARMONIC WAVE.RTM. Ultrasonic Shears, the
HARMONIC FOCUS.RTM. Ultrasonic Shears, and the HARMONIC
SYNERGY.RTM. Ultrasonic Blades.
[0067] Surgical instrument (100) of the present example comprises a
handle assembly (120), a shaft assembly (130), and an end effector
(140). Handle assembly (120) comprises a body (122) including a
pistol grip (124) and a pair of buttons (126). Handle assembly
(120) also includes a trigger (128) that is pivotable toward and
away from pistol grip (124). It should be understood, however, that
various other suitable configurations may be used, including but
not limited to a pencil-grip configuration or a scissor-grip
configuration. End effector (140) includes an ultrasonic blade
(160) and a pivoting clamp arm (144). Clamp arm (144) is coupled
with trigger (128) such that clamp arm (144) is pivotable toward
ultrasonic blade (160) in response to pivoting of trigger (128)
toward pistol grip (124); and such that clamp arm (144) is
pivotable away from ultrasonic blade (160) in response to pivoting
of trigger (128) away from pistol grip (124). Various suitable ways
in which clamp arm (144) may be coupled with trigger (128) will be
apparent to those of ordinary skill in the art in view of the
teachings herein. In some versions, one or more resilient members
are used to bias clamp arm (144) and/or trigger (128) to the open
position shown in FIG. 4.
[0068] An ultrasonic transducer assembly (112) extends proximally
from body (122) of the handle assembly (120). Transducer assembly
(112) is coupled with a generator (116) via a cable (114).
Transducer assembly (112) receives electrical power from generator
(116) and converts that power into ultrasonic vibrations through
piezoelectric principles. Generator (116) may include a power
source and control module configured to provide a power profile to
transducer assembly (112) that is particularly suited for the
generation of ultrasonic vibrations through transducer assembly
(112). By way of example only, generator (116) may comprise a GEN
300 sold by Ethicon Endo-Surgery, Inc. of Cincinnati, Ohio. In
addition or in the alternative, generator (116) may be constructed
in accordance with at least some of the teachings of U.S. Pub. No.
2011/0087212, entitled "Surgical Generator for Ultrasonic and
Electrosurgical Devices," published Apr. 14, 2011, the disclosure
of which is incorporated by reference herein. It should also be
understood that at least some of the functionality of generator
(116) may be integrated into handle assembly (120), and that handle
assembly (120) may even include a battery or other on-board power
source such that cable (114) is omitted. Still other suitable forms
that generator (116) may take, as well as various features and
operabilities that generator (116) may provide, will be apparent to
those of ordinary skill in the art in view of the teachings
herein.
[0069] Blade (160) of the present example is operable to vibrate at
ultrasonic frequencies in order to effectively cut through and seal
tissue, particularly when the tissue is being clamped between clamp
arm (144) and blade (160). Blade (160) is positioned at the distal
end of an acoustic drivetrain. This acoustic drivetrain includes
transducer assembly (112) and an acoustic waveguide (102).
Transducer assembly (112) includes a set of piezoelectric discs
(not shown) located proximal to a horn (not shown) of the rigid
acoustic waveguide (102). The piezoelectric discs are operable to
convert electrical power into ultrasonic vibrations, which are then
transmitted along acoustic waveguide (102), which extends through
shaft assembly (130), to blade (160) in accordance with known
configurations and techniques. By way of example only, this portion
of the acoustic drivetrain may be configured in accordance with
various teachings of various references that are cited herein.
[0070] Waveguide (102) is secured within shaft assembly (130) via a
pin (133), which passes through waveguide (102) and shaft assembly
(130). Pin (133) is located at a position along the length of
waveguide (102) corresponding to a node associated with resonant
ultrasonic vibrations communicated through waveguide (102). When
ultrasonic blade (160) is in an activated state (i.e., vibrating
ultrasonically), ultrasonic blade (160) is operable to effectively
cut through and seal tissue, particularly when the tissue is being
clamped between clamp arm (144) and ultrasonic blade (160). It
should be understood that waveguide (102) may be configured to
amplify mechanical vibrations transmitted through waveguide (102).
Furthermore, waveguide (102) may include features operable to
control the gain of the longitudinal vibrations along waveguide
(102) and/or features to tune waveguide (102) to the resonant
frequency of the system.
[0071] In the present example, the distal end of blade (160) is
located at a position corresponding to an anti-node associated with
resonant ultrasonic vibrations communicated through waveguide
(102), in order to tune the acoustic assembly to a preferred
resonant frequency f.sub.o when the acoustic assembly is not loaded
by tissue. When transducer assembly (112) is energized, the distal
end of blade (160) is configured to move longitudinally in the
range of, for example, approximately 10 to 500 microns
peak-to-peak, and in some instances in the range of about 20 to
about 200 microns at a predetermined vibratory frequency f.sub.o
of, for example, 55.5 kHz. When transducer assembly (112) of the
present example is activated, these mechanical oscillations are
transmitted through waveguide (102) to reach blade (160), thereby
providing oscillation of blade (160) at the resonant ultrasonic
frequency. Thus, when tissue is secured between blade (160) and
clamp arm (144), the ultrasonic oscillation of blade (160) may
simultaneously sever the tissue and denature the proteins in
adjacent tissue cells, thereby providing a coagulative effect with
relatively little thermal spread. In some versions, an electrical
current may also be provided through blade (160) and clamp arm
(144) to also cauterize the tissue. While some configurations for
an acoustic transmission assembly and transducer assembly (112)
have been described, still other suitable configurations for an
acoustic transmission assembly and transducer assembly (112) will
be apparent to one or ordinary skill in the art in view of the
teachings herein. Similarly, other suitable configurations for end
effector (140) will be apparent to those of ordinary skill in the
art in view of the teachings herein.
[0072] An operator may activate buttons (126) to selectively
activate transducer assembly (112) to activate blade (160). In the
present example, two buttons (126) are provided--one for activating
blade (160) at a low power and another for activating blade (160)
at a high power. However, it should be understood that any other
suitable number of buttons and/or otherwise selectable power levels
may be provided. For instance, a foot pedal may be provided to
selectively activate transducer assembly (112). Buttons (126) of
the present example are positioned such that an operator may
readily fully operate instrument (100) with a single hand. For
instance, the operator may position their thumb about pistol grip
(124), position their middle, ring, and/or little finger about
trigger (128), and manipulate buttons (126) using their index
finger. Of course, any other suitable techniques may be used to
grip and operate surgical instrument (100); and buttons (126) may
be located at any other suitable positions.
[0073] Shaft assembly (130) of the present example comprises an
outer sheath (132), an inner tube (134) slidably disposed within
the outer sheath (132), and a waveguide (102) disposed within the
inner tube (134). As will be discussed in more detail below, inner
tube (134) is operable to translate longitudinally within outer
sheath (132) relative to outer sheath (132) to selectively pivot
clamp arm (144) toward and away from blade (160). Shaft assembly
(130) of the present example further includes a rotation assembly
(150). Rotation assembly (150) is operable to rotate the entire
shaft assembly (130) and end effector (140) relative to handle
assembly (120) about a longitudinal axis of shaft assembly (130).
In some versions, rotation assembly (150) is operable to
selectively lock the angular position of shaft assembly (130) and
end effector (140) relative to handle assembly (120) about the
longitudinal axis of shaft assembly (130). For instance, a rotation
knob (152) of rotation assembly (150) may be translatable between a
first longitudinal position, in which shaft assembly (130) and end
effector (140) are rotatable relative to handle assembly (120)
about the longitudinal axis of shaft assembly (130); and a second
longitudinal position, in which shaft assembly (130) and end
effector (140) are not rotatable relative to handle assembly (120)
about the longitudinal axis of shaft assembly (130). Of course,
shaft assembly (130) may have a variety of other components,
features, and operabilities, in addition to or in lieu of any of
those noted above. Other suitable configurations for shaft assembly
(130) will be apparent to those of ordinary skill in the art in
view of the teachings herein.
[0074] As shown in FIGS. 3 and 4, end effector (140) includes
ultrasonic blade (160) and clamp arm (144). Clamp arm (144)
includes a clamp pad (146) secured to an underside of the clamp arm
(144) and facing the blade (160). Clamp arm (144) is pivotably
coupled with a distal end of outer sheath (132) of shaft assembly
(130) above ultrasonic blade (160) via a pin (145). As best seen in
FIG. 4, a distal end of inner tube (134) is rotatably coupled with
a proximal end of clamp arm (144) below ultrasonic blade (160) via
a pin (135) such that longitudinal translation of inner tube (134)
causes rotation of clamp arm (144) about pin (145) toward and away
from ultrasonic blade (160) to thereby clamp tissue between clamp
arm (144) and ultrasonic blade (160) to cut and/or seal the tissue.
In particular, proximal longitudinal translation of inner tube
(134) relative to outer sheath (132) and handle assembly (120)
causes clamp arm (144) to move toward ultrasonic blade (160); and
distal longitudinal translation of inner tube (134) relative to
outer sheath (132) and handle assembly (120) causes clamp arm (144)
to move away from ultrasonic blade (160).
[0075] As shown in FIG. 5, and as discussed above, trigger (128) is
pivotably coupled to handle assembly (120) via a pin (123A) such
that trigger (128) is operable to rotate about pin (123A). As will
be described in more detail below, trigger (128) is coupled with a
yoke (125) via a linkage (129) such that rotation of trigger (128)
about pin (123A) causes longitudinal translation of yoke (125). A
first end (129A) of linkage (129) is rotatably coupled with a
proximal portion of trigger (128) via a pin (123B). A second end
(129B) of linkage (129) is rotatably coupled with a proximal
portion of yoke (125) via a pin (123C). A pair of elongate
oval-shaped projections (127) extend inwardly from interior
surfaces of body (122). An interior surface of each oval-shaped
projection (127) defines an elongate oval-shaped slot (127A). Pin
(123C) passes completely through the proximal portion of yoke (125)
and second end (129B) of linkage (129) such that ends of pin (123C)
extend from opposite sides of yoke (125). These ends of pin (123C)
are slidably and rotatably disposed within oval-shaped slots
(127A). A pin (123D) passes completely through a distal portion of
yoke (125) such that ends of pin (123D) extend from opposite sides
of yoke (125). These ends of pin (123D) are slidably and rotatably
disposed within oval-shaped slots (127A). It should therefore be
understood that yoke (125) is longitudinally translatable within
oval-shaped slots (127A) via pins (123C, 123D) between a proximal
longitudinal position and a distal longitudinal position.
Furthermore, because the proximal portion of trigger (128) is
coupled with yoke (125) via linkage (129), pivoting of trigger
(128) toward and away from pistol grip (124) will cause
longitudinal translation of yoke (125) within oval-shaped slots
(127A). In particular, pivoting of trigger (128) toward pistol grip
(124) will cause proximal longitudinal translation of yoke (125)
within oval-shaped slots (127A); and that pivoting of trigger (128)
away from pistol grip (124) will cause distal longitudinal
translation of yoke (125) within oval-shaped slots (127A).
[0076] A distal portion of yoke (125) is coupled with inner tube
(134) of shaft assembly (130) via a coupling assembly (135). As
discussed above, inner tube (134) is longitudinally translatable
within outer sheath (132), such that inner tube (134) is configured
to longitudinally translate concurrently with yoke (125).
Furthermore, because pivoting of trigger (128) toward pistol grip
(124) causes proximal longitudinal translation of yoke (125), it
should be understood that pivoting of trigger (128) toward pistol
grip (124) will cause proximal longitudinal translation of inner
tube (134) relative to outer sheath (132) and handle assembly
(120); and because pivoting of trigger (128) away from pistol grip
(124) causes distal longitudinal translation of yoke (125), it
should be understood that and that pivoting of trigger (128) away
from pistol grip (124) will cause distal longitudinal translation
of inner tube (134) relative to outer sheath (132) and handle
assembly (120). Finally, because longitudinal translation of inner
tube (134) causes rotation of clamp arm (144) toward and away from
blade (160) as discussed above, it should be understood that
pivoting of trigger (128) toward pistol grip (124) will cause clamp
arm (144) to move toward ultrasonic blade (160); and that pivoting
of trigger (128) away from pistol grip (124) will cause clamp arm
(144) to move away from ultrasonic blade (160).
[0077] In some versions, one or more resilient members are used to
bias clamp arm (144) and/or trigger (128) to the open position
shown in FIG. 4. For instance, as shown in FIG. 5, a spring (136)
is positioned within a proximal end of body (122) of the handle
assembly (120). Spring (136) bears against body (122) and a
proximal end of yoke (125) to thereby bias yoke (125) toward the
distal position. Biasing of yoke (125) toward the distal position
causes inner tube (134) to be biased distally and further causes
trigger (128) to be biased away from pistol grip (124).
[0078] The foregoing components and operabilities of surgical
instrument (100) are merely illustrative. Surgical instrument (100)
may be configured in numerous other ways as will be apparent to
those of ordinary skill in the art in view of the teachings herein.
By way of example only, at least part of surgical instrument (100)
may be constructed and/or operable in accordance with at least some
of the teachings of any of the following, the disclosures of which
are all incorporated by reference herein: U.S. Pat. No. 5,322,055;
U.S. Pat. No. 5,873,873; U.S. Pat. No. 5,980,510; U.S. Pat. No.
6,325,811; U.S. Pat. No. 6,783,524; U.S. Pub. No. 2006/0079874;
U.S. Pub. No. 2007/0191713; U.S. Pub. No. 2007/0282333; U.S. Pub.
No. 2008/0200940; U.S. Pub. No. 2010/0069940; U.S. Pub. No.
2011/0015660; U.S. Pub. No. 2012/0112687; U.S. Pub. No.
2012/0116265; U.S. Pub. No. 2014/0005701; and/or U.S. Pub. No.
2014/0114334. Additional merely illustrative variations for
surgical instrument (100) will be described in greater detail
below. It should be understood that the below described variations
may be readily applied to surgical instrument (100) described above
and any of the instruments referred to in any of the references
that are cited herein, among others.
III. MULTIFUNCTION TRIGGERS FOR ULTRASONIC SURGICAL INSTRUMENT
[0079] As discussed above, handle assembly (22, 120) may include
control selector (30) and activation switch (32); where activation
switch (32) may provide appropriate power to ultrasonic transducer
(26, 112), and control selector (30) may allow the operator to
select a desired power level or amplitude of ultrasonic energy.
Alternatively, as also discussed above, handle assembly (22, 120)
may include two or more activation switches (32) or buttons (126),
each corresponding to different power levels or amplitudes of
ultrasonic energy. Additionally, as discussed above, handle
assembly (22, 120) may include a trigger (128) coupled to clamp arm
(144) such that clamp arm (144) is pivotable towards ultrasonic
blade (24, 160) to clamp tissue between clamp arm (144) and
ultrasonic blade (24, 160).
[0080] In some instances, it may be desirable to incorporate the
functionality of control selector (30), activation switch (32), or
both control selector (30) and activation switch (32) into certain
aspects of trigger (128). This may enable the operator to select a
desired power level and/or activate ultrasonic blade (24, 160) by
pivoting trigger (128) toward pistol grip (124). It should be
understood that while the current examples are related to
ultrasonic surgical instruments (20, 100), the principles of the
current disclosure are not intended to be limited to ultrasonic
surgical instruments (20, 100). One having ordinary skill in the
art would immediately recognize these principles may be readily
incorporated into a variety of different instruments requiring
activation, power selection, and tissue manipulation. For example,
the principles described herein may be incorporated into an RF
surgical instrument or any other surgical instrument requiring
electrical power.
[0081] A. Trigger with Mode Defining Closure
[0082] 1. Handle Assembly with Discrete, Trigger-Activated Power
Level Selection Switches
[0083] FIGS. 6A-6C show an alternative handle assembly (220) that
may be incorporated into ultrasonic surgical instrument (100)
described above. Like handle assembly (120), handle assembly (220)
of this example includes a body (222), a pistol grip (224), and a
trigger (228). These components are substantially similar to body
(122), pistol grip (124), and trigger (128) described above, with
the differences described below. Handle assembly (220) also
receives an ultrasonic transducer (112), just like handle assembly
(120) described above. It should be understood that clamp arm (144)
may be coupled with trigger (228) such that clamp arm (144) is
pivotable toward ultrasonic blade (160) in response to pivoting of
trigger (228) toward pistol grip (224); and such that clamp arm
(144) is pivotable away from ultrasonic blade (160) in response to
pivoting of trigger (228) away from pistol grip (224). Various
suitable ways in which clamp arm (144) may be coupled with trigger
(228) will be apparent to those of ordinary skill in the art in
view of the teachings herein. In some versions, one or more
resilient members are used to bias clamp arm (144) and/or trigger
(228) to the open position.
[0084] While handle assembly (120) includes two activation buttons
(126), with one button (126) activating blade (160) at a low power
and another button (126) activating blade (160) at a high power,
handle assembly (220) of the present example includes only one
activation button (226). In addition, pistol grip (224) houses
three power switches (264, 266, 268). Trigger (228) includes a
lever (262) that is pivotally coupled to body (222) via pin (260).
A bridge (270) is unitarily fixed to lever (262).
[0085] As can be seen in FIGS. 6A-6C, bridge (270) is located on
lever (262) such that as trigger (228) pivots towards pistol grip
(224), bridge (270) successively contacts, and thereby activates,
individual switches (264, 266, 268). Bridge (270) may only activate
one individual switch (264, 266, 268) at time, corresponding to the
pivotal location of trigger (228) relative to pistol grip (224).
Individual switches (264, 266, 268) may be in electrical
communication with circuit board (34). Activation of individual
switches (264, 266, 268) via contact with bridge (270) will trigger
a response in circuit board (34) that will select a specific
corresponding power level or amplitude of ultrasonic energy to be
delivered through blade (160). Thus, when button (226) is actuated
while one of switches (264, 266, 268) is activated, transducer
(112) will provide a corresponding power level or amplitude of
ultrasonic energy to ultrasonic blade (160) based on a control
signal from circuit board (34).
[0086] For example, when trigger (228) is in the position shown in
FIG. 6A, bridge (270) activates switch (264). Activation of switch
(264) may communicate with circuit board (34) to set the desired
power level to low. Therefore, if the operator presses button (226)
when trigger (228) is located at the position shown in FIG. 6A,
ultrasonic blade (160) will activate to the corresponding low power
level. Similarly, when trigger (228) is in the position shown in
FIG. 6B, bridge (270) activates switch (266). Activation of switch
(266) may communicate with circuit board (34) to set the desired
power lever to medium. Therefore, if the operator presses button
(226) when trigger (228) is located at the position shown in FIG.
6B, ultrasonic blade (160) will activate to the corresponding
medium power level. Similarly, when trigger (228) is in the
position shown in FIG. 6C, bridge (270) activates switch (268).
Activation of switch (268) may communicate with circuit board (34)
to set the desired power level to high. Therefore, if the operator
presses button (226) when trigger (228) is located at the position
shown in FIG. 6C, ultrasonic blade (160) will activate to the
corresponding high power lever.
[0087] It should be understood that tactile feedback may be
provided in order to indicate to the operator that trigger (228)
has rotated from one power level to the next. For example,
corresponding detents may be placed on pistol grip (224) and lever
(262), where the detents are configured to interact with each other
when trigger (228) rotates to and from the positions shown in FIGS.
6A-6C. Therefore, the operator will feel a click or sudden increase
in physical resistance to further pivoting of trigger (228) when
instrument (100) transitions from one power level to the next.
[0088] Optionally, if any one of switches (264, 266, 268) is not
activated by contact with bridge (270), circuit board (34) may set
the desired power level to off. Therefore, if the operator presses
button (226) while bridge (270) is not in contact with any switch
(264, 266, 268), ultrasonic blade (160) will remain inactivated.
This may act as a safety switch. As another merely illustrative
variation, trigger (228) may be modified such that one or more
trigger switches are included on lever (262). Such trigger switches
may be configured such that the trigger switch is positioned
directly under button (226) when trigger (228) is pivoted to an
appropriate position. In such versions, button (226) may be
inoperable when a trigger switch is not positioned directly under
button (226). In other words, the activation circuit may require
closure of a trigger switch on lever (262) by button (226) in order
for blade (160) to be activated. Such one or more trigger switches
may be provided in addition to or in lieu of switches (264, 266,
268). In versions where one or more trigger switches are provided
on lever (262) for engagement by button (226) and switches (264,
266, 268) are omitted, the different trigger switches may provide
activation of blade (160) at different power levels and/or provide
activation of end effector (140) at different power modalities.
[0089] While the power levels low, medium, and high are used in the
foregoing example, one having ordinary skill in the art in view of
the teachings herein would recognize these power levels are merely
optional. For example, activation of any of the switches (264, 266,
268) may also communicate to circuit board (34) to set the desired
power level to off. Therefore, contact between bridge (270) and any
one of switches (264, 266, 268) may also act as a safety switch.
Additionally, while three switches (264, 266, 268) are shown in the
present example, any number of switches may be utilized as would be
apparent to one having ordinary skill in the art in view of the
teachings herein.
[0090] Trigger (228) may also be modified such that closure of
clamp arm (144) relative to ultrasonic blade (160) occurs before
bridge (270) makes contact with switch (264). In other words,
switches (264, 266, 268) may be positioned such that trigger (228)
can move through a first range of pivotal motion before contacting
switch (264). Trigger (228) may thus at least partially pivot clamp
arm (144) toward blade (160) during this first range of pivotal
motion. In some such instances, trigger (228) is movable through a
first range of motion to pivot clamp arm (144) toward blade (160)
to a fully closed position; then trigger (228) is further pivotable
through second, third, and fourth ranges of motion to enable bridge
(270) to successively activate switches (264, 266, 268). During the
second, third, and fourth ranges of motion of trigger (228), clamp
arm (144) may provide progressively increasing compression of
tissue against blade (160). Alternatively, a locking clutch may
provide a coupling between clamp arm (144) and trigger (228), such
that movement of trigger (228) through the second, third, and
fourth ranges of motion do not have any effect on clamp arm (144).
Various suitable ways in which this may be accomplished will be
apparent to those of ordinary skill in the art in view of the
teachings herein.
[0091] As noted above, bridge (270) of the present example is sized
and configured such that bridge (270) will only activate one
individual switch (264, 266, 268) at a time, based on the pivotal
location of trigger (228) relative to pistol grip (224). In some
other versions, however, bridge (270) may be sized and configured
to activate more than one switch (264, 266, 268) at a time. For
instance, in some alternative versions, bridge (270) is sized and
configured to activate switch (264) after completing a first range
of pivotal motion; to activate switches (264, 266) after completing
a second range of pivotal motion; and to activate switches (264,
266, 268) after completing a third range of pivotal motion. The
power level of ultrasonic blade (160) and/or other operational
parameters may again vary based on activation of switches (264,
266, 268).
[0092] 2. Handle Assembly with Hall Effect Sensor to Detect Trigger
Position and Select Ultrasonic Power Level
[0093] FIGS. 7A-7C show an alternative handle assembly (320) that
may be incorporated into ultrasonic surgical instrument (100)
described above. Like handle assembly (120), handle assembly (320)
of this example includes a body (322), a pistol grip (324), and a
trigger (328). These components are substantially similar to body
(122), pistol grip (124), and trigger (128) described above, with
the differences described below. Handle assembly (320) also
receives an ultrasonic transducer (112), just like handle assembly
(120) described above. It should be understood that clamp arm (144)
may be coupled with trigger (328) such that clamp arm (144) is
pivotable toward ultrasonic blade (160) in response to pivoting of
trigger (328) toward pistol grip (324); and such that clamp arm
(144) is pivotable away from ultrasonic blade (160) in response to
pivoting of trigger (328) away from pistol grip (324). Various
suitable ways in which clamp arm (144) may be coupled with trigger
(328) will be apparent to those of ordinary skill in the art in
view of the teachings herein. In some versions, one or more
resilient members are used to bias clamp arm (144) and/or trigger
(328) to the open position.
[0094] While handle assembly (120) includes two activation buttons
(126), with one button (126) activating blade (160) at a low power
and another button (126) activating blade (160) at a high power,
handle assembly (320) of the present example includes only one
activation button (326). In addition, pistol grip (324) of the
present example houses a Hall Effect sensor (366). Trigger (328)
includes a lever (362) that is pivotally coupled to body (322) via
pin (360). A magnet (364) is unitarily fixed to lever (362).
[0095] As can be seen in FIGS. 7A-7C, magnet (364) is located on
lever (362) such that as trigger (328) pivots toward pistol grip
(224), magnet (364) rotates closer to Hall Effect sensor (366). As
magnet (364) rotates closer to Hall Effect sensor (366), sensor
(366) varies its output voltage. Hall Effect sensor (366) is in
electrical communication with circuit board (34). Hall Effect
sensor (366) thereby communicates an output voltage to circuit
board (34) based in part on the distance between magnet (364) and
Hall Effect sensor (366). Circuit board (34) is configured to
select a specific power level or amplitude of ultrasonic energy
based on a range of voltages received from Hall Effect sensor
(366). Thus, when button (326) is activated while magnet (364) is
within a predetermined distance of Hall Effect sensor (366),
transducer (112) will provide a corresponding power level or
amplitude of ultrasonic energy to ultrasonic blade (160) based on a
control signal from circuit board (34).
[0096] For example, when trigger (328) is in the position shown in
FIG. 7A, magnet (364) is at a first distance relative to Hall
Effect sensor (366). Therefore, Hall Effect sensor (366) outputs a
corresponding voltage to circuit board (34). The voltage
corresponding to position of trigger (328) shown in FIG. 7A may
signal to circuit board (34) to set the desired power level to low.
Therefore, if the operator presses button (326) when trigger (328)
is located at the position shown in FIG. 7A, ultrasonic blade (160)
will activate to the corresponding low power level.
[0097] Similarly, when trigger (328) is in the position shown in
FIG. 7B, magnet (364) is at a second, closer distance relative to
Hall Effect sensor (366). Therefore, Hall Effect sensor (366)
outputs a corresponding voltage to circuit board (34). The voltage
corresponding to position of trigger (328) shown in FIG. 7B may
signal to circuit board (34) to set the desired power level to
medium. Therefore, if the operator presses button (326) when
trigger (328) is located at the position shown in FIG. 7B,
ultrasonic blade (160) will activate to the corresponding medium
power level.
[0098] Similarly, when trigger (328) is in the position shown in
FIG. 7C, magnet (364) is at a third, closest distance relative to
Hall Effect sensor (366). Therefore, Hall Effect sensor (366)
outputs a corresponding voltage to circuit board (34). The voltage
corresponding to position of trigger (328) shown in FIG. 7C may
signal to circuit board (34) to set the desired power level to
high. Therefore, if the operator presses button (326) when trigger
(328) is located at the position shown in FIG. 7C, ultrasonic blade
(160) will activate to the corresponding high power level.
[0099] It should be understood that tactile feedback may be
provided in order to indicate to the operator that trigger (328)
has rotated from one power level to the next. For example,
corresponding detents may be placed on pistol grip (324) and lever
(362), where the detents are configured to interact with each other
when trigger (328) rotates to and from the positions shown in FIGS.
7A-7C. Therefore, the operator will feel a click or sudden increase
in physical resistance to further pivoting of trigger (328) when
instrument (100) transitions from one power level to the next.
[0100] While the power levels low, medium, and high are used, one
having ordinary skill in the art in view of the teachings herein
would recognize these power levels are merely optional. For
example, a location of any distance between magnet (364) and Hall
Effect sensor (366) may provide a corresponding output voltage that
signals to circuit board (34) to set the desired power level to
off. Therefore, if the operator presses button (326) while the
corresponding output voltage sets the desired power level to off,
ultrasonic blade (160) will remain inactive. This may effectively
act as a safety switch.
[0101] Additionally, while three distances are shown in the present
example, any number of distances with corresponding power levels
may be utilized as would be apparent to one having ordinary skill
in the art in view of the teachings herein. Moreover, the
ultrasonic power level may be continuously variable along a range
of power, such that the available levels need not necessarily be
limited to a specific, discrete number of power levels. In other
words, the ultrasonic power level may have some proportional
relationship with the pivotal position of trigger (328), since Hall
Effect sensor (366) is capable of generating continuously variable
output voltages along a range based on the proximity of magnet
(364) to Hall Effect sensor (366).
[0102] Circuit board (34) and/or Hall Effect sensor (366) may also
be configured such that trigger (328) is movable through a first
range of motion to at least partially pivot clamp arm (144) toward
blade (160) without providing a selection of an ultrasonic power
level. For instance, Hall Effect sensor (366) may be configured
such that Hall Effect sensor (366) does not sense the magnetic
field of magnet (364) and therefore does not generate a voltage
until trigger (328) has moved through the first range of motion. In
addition or in the alternative, circuit board (34) may be
configured to be essentially non-responsive to voltages from Hall
Effect sensor (366) that fall below a threshold level that is
associated with trigger (328) completing a first range of
motion.
[0103] While a Hall Effect sensor (366) is used in the present
example to provide contact-less sensing of proximity, it should be
understood that other kinds of components may be used to sense the
proximity of a portion of trigger (328) without having to contact
trigger (328). By way of example only, magnet (364) may be omitted
and Hall Effect sensor (366) may be replaced with a conventional
proximity sensor, including but not limited to a capacitive sensor,
an inductive sensor, a photocell, etc. Other suitable variations
will be apparent to those of ordinary skill in the art in view of
the teachings herein.
[0104] 3. Handle Assembly with Force Transducer to Detect Trigger
Position and Select Ultrasonic Power Level
[0105] FIGS. 8A-8C show an alternative handle assembly (420) that
may be incorporated into ultrasonic surgical instrument (100)
described above. Like handle assembly (120), handle assembly (420)
of this example includes a body (422), a pistol grip (424), and a
trigger (428). These components are substantially similar to body
(122), pistol grip (124), and trigger (128) described above, with
the differences described below. Handle assembly (420) also
receives an ultrasonic transducer (112), just like handle assembly
(120) described above. It should be understood that clamp arm (144)
may be coupled with trigger (428) such that clamp arm (144) is
pivotable toward ultrasonic blade (160) in response to pivoting of
trigger (428) toward pistol grip (424); and such that clamp arm
(144) is pivotable away from ultrasonic blade (160) in response to
pivoting of trigger (428) away from pistol grip (424). Various
suitable ways in which clamp arm (144) may be coupled with trigger
(428) will be apparent to those of ordinary skill in the art in
view of the teachings herein. In some versions, one or more
resilient members are used to bias clamp arm (144) and/or trigger
(428) to the open position.
[0106] While handle assembly (120) includes two activation buttons
(126), with one button (126) activating blade (160) at a low power
and another button (126) activating blade (160) at a high power,
handle assembly (420) of the present example includes only one
activation button (426). Trigger (428) of the present example
includes a lever (462) that is pivotally coupled to body (422) via
pin (460); and a spring loaded torque transducer (464) associated
with lever (362). Spring loaded torque transducer (464) is
configured to resiliently bias trigger (428) and lever (462) to an
open or distal position relative to pistol grip (424). Spring
loaded torque transducer (464) is in electrical communication with
circuit board (34). As trigger (428) rotates toward pistol grip
(424), as shown in FIGS. 8A-8C, spring loaded torque transducer
(464) imparts a measurable force on trigger (428) in an attempt to
bias trigger (428) back into the open position. Spring loaded
torque transducer (464) generates a progressively increasing force
on trigger (428) the farther trigger (428) is displaced from the
open position.
[0107] Spring loaded torque transducer (464) also generates an
electrical output corresponding to the measurable force imparted on
trigger (428) and sends this electrical output to circuit board
(34). Circuit board (34) may then use the output to select a
predetermined power level. Thus, when button (426) is activated
while spring loaded torque transducer (464) sends a measureable
output to circuit board (34) indicating a specific power level,
transducer (112) will provide a corresponding power level or
amplitude of ultrasonic energy to ultrasonic blade (160) based on a
control signal from circuit board (34).
[0108] For example, when trigger (428) is in the position shown in
FIG. 8A, spring loaded torque transducer (464) imparts a first
measureable force on trigger (428). Therefore, spring loaded torque
transducer (464) outputs a corresponding electrical output to
circuit board (34). The voltage corresponding to the force
generated by spring loaded torque transducer (464) based on the
position of trigger (428) shown in FIG. 8A may signal to circuit
board (34) to set the desired power level to low. Therefore, if the
operator presses button (426) when trigger (428) is located at the
position shown in FIG. 8A, ultrasonic blade (160) will activate to
the corresponding low power level.
[0109] Similarly, when trigger (428) is in the position shown in
FIG. 8B, spring loaded torque transducer (464) imparts a second,
greater measureable force on trigger (428). Therefore, spring
loaded torque transducer (464) outputs a corresponding electrical
output to circuit board (34). The voltage corresponding to the
force generated by spring loaded torque transducer (464) based on
the position of trigger (428) shown in FIG. 8B may signal to
circuit board (34) to set the desired power level to medium.
Therefore, if the operator presses button (426) when trigger (428)
is located at the position shown in FIG. 8B, ultrasonic blade (160)
will activate to the corresponding medium power level.
[0110] Similarly, when trigger (428) is in the position shown in
FIG. 8C, spring loaded torque transducer (464) imparts a third,
greatest measureable force on trigger (428). Therefore, spring
loaded torque transducer (464) outputs a corresponding electrical
output to circuit board (34). The voltage corresponding to the
force generated by spring loaded torque transducer (464) based on
the position of trigger (428) shown in FIG. 8C may signal to
circuit board (34) to set the desired power level to high.
Therefore, if the operator presses button (426) when trigger (428)
is located at the position shown in FIG. 8C, ultrasonic blade (160)
will activate to the corresponding high power level.
[0111] It should be understood that tactile feedback may be
provided in order to indicate to the operator that trigger (428)
has rotated from one power level to the next. For example,
corresponding detents may be placed on pistol grip (424) and lever
(462), where the detents are configured to interact with each other
when trigger (428) rotates to and from the positions shown in FIGS.
8A-8C. Therefore, the operator will feel a click or sudden increase
in physical resistance to further pivoting of trigger (428) when
instrument (100) transitions from one power level to the next.
[0112] While the power levels low, medium, and high are used, one
having ordinary skill in the art in view of the teachings herein
would recognize these power levels are merely optional. For
example, a force imparted on trigger (428) by spring loaded torque
transducer (464) may provide a corresponding output voltage that
signals to circuit board (34) to set the desired power level to
off. Therefore, if the operator presses button (426) while the
corresponding output voltage sets the desired power level to off,
ultrasonic blade (160) will remain inactive. This may effectively
act as a safety switch.
[0113] Additionally, while three distances are shown in the present
example, any number of distances with corresponding power levels
may be utilized as would be apparent to one having ordinary skill
in the art in view of the teachings herein. Moreover, the
ultrasonic power level may be continuously variable along a range
of power, such that the available levels need not necessarily be
limited to a specific, discrete number of power levels. In other
words, the ultrasonic power level may have some proportional
relationship with the pivotal position of trigger (428), since
torque transducer (464) is capable of generating continuously
variable output voltages along a range based on the resistance
force imposed on trigger (428) by torque transducer (464).
[0114] Circuit board (34) and/or torque transducer (464) may also
be configured such that trigger (428) is movable through a first
range of motion to at least partially pivot clamp arm (144) toward
blade (160) without providing a selection of an ultrasonic power
level. For instance, torque transducer (464) may be configured such
that torque transducer (464) does not generate a voltage until
trigger (428) has moved through the first range of motion. In
addition or in the alternative, circuit board (34) may be
configured to be essentially non-responsive to voltages from torque
transducer (464) that fall below a threshold level that is
associated with trigger (428) completing a first range of
motion.
[0115] It should be understood that torque transducer (464) may be
replaced with a variety of other components. By way of example
only, a rotary encoder, rotary potentiometer, rheostat, or other
device that is capable of indicating the pivotal position of
trigger (428) may be used in place of torque transducer (464).
Other suitable substitutes will be apparent to those of ordinary
skill in the art in view of the teachings herein.
[0116] While handle assembly (420) provides three discrete power
levels in the present example, it should be understood that torque
transducer (464) (or any substitute therefor) may be used to
provide continuous feedback on the pivotal position of trigger
(428), and this feedback may be used to provide a continuously
variable power level for blade (160). In other words, the power
level may change linearly or otherwise proportionally based on the
pivotal position of trigger (428). Alternatively, circuit board
(34) may still provide a stepped response that mimics discrete
switches to provide discrete power levels in response to continuous
feedback on the pivotal position of trigger (428).
[0117] B. Handle Assembly with Movable Trigger Actuated Buttons to
Select Power Level
[0118] FIGS. 9A-11 show an alternative handle assembly (520) that
may be incorporated into ultrasonic surgical instrument (100)
described above. Like handle assembly (120), handle assembly (520)
of this example includes a body (522), a pistol grip (524), and a
trigger (528). These components are substantially similar to body
(122), pistol grip (124), and trigger (128) described above, with
the differences described below. Handle assembly (520) also
receives an ultrasonic transducer (112), just like handle assembly
(120) described above. It should be understood that clamp arm (144)
may be coupled with trigger (528) such that clamp arm (144) is
pivotable toward ultrasonic blade (160) in response to pivoting of
trigger (528) toward pistol grip (524); and such that clamp arm
(144) is pivotable away from ultrasonic blade (160) in response to
pivoting of trigger (528) away from pistol grip (524). Various
suitable ways in which clamp arm (144) may be coupled with trigger
(528) will be apparent to those of ordinary skill in the art in
view of the teachings herein. In some versions, one or more
resilient members are used to bias clamp arm (144) and/or trigger
(528) to the open position.
[0119] While handle assembly (120) includes two activation buttons
(126), with one button (126) activating blade (160) at a low power
and another button (126) activating blade (160) at a high power,
handle assembly (520) of the present example includes only one
activation button (526). In addition, pistol grip (524) of the
present example includes a plurality of slots (570). A button (572)
is rotatably disposed in each slot (572). As will be described in
greater detail below, rotatable buttons (572) are capable of
rotating from an "activated" position to a "deactivated" position,
which in turn may change the functionality of pressing activation
button (526). Additionally, trigger (528) further includes a lever
(562) extending distally from trigger (528); and a finger grip
(560) extending from lever (562).
[0120] FIGS. 9A-9C show an exemplary use of handle assembly (520)
incorporated into instrument (100). As shown in FIG. 9A, trigger
(528) is in an open position relative to pistol grip (524).
Therefore, as described above, clamp arm (144) is pivoted away from
ultrasonic blade (160). It should be understood that the top and
bottom rotatable buttons (572) are rotated within slots (570) of
pistol grip (524) to face towards trigger (528) in such a way as to
make contact with the face of trigger (528) when trigger (528) is
fully pivoted toward pistol grip (524). Therefore, the top and
bottom rotatable buttons (572) are in the distally projecting,
"activated" position. The middle rotatable button (572) is rotated
within slot (570) of pistol grip (524) to face away from trigger
(528) in such a way as to not make contact with the face of trigger
(528) when trigger (528) is fully pivoted toward pistol grip (524).
Therefore the middle rotatable button (572) is in the laterally
projecting, "deactivated" position. It should be understood that,
as shown in FIGS. 10-11, any number of combinations of rotatable
buttons (572) can be switched to the "activated" and "deactivated"
positions.
[0121] FIG. 9B shows trigger (528) pivoted to toward pistol grip
(524) to the closed position. A proximal face of trigger (528)
makes contact with the top and bottom rotatable buttons (572)
without making contact with the middle rotatable button (572).
Rotatable buttons (572) are in electrical communication with
circuit board (34). Thus, when rotatable buttons (572) are in the
"activated" position, rotatable buttons (572) send a message to
circuit board (34) when the face of trigger (528) makes contact
with rotatable buttons (572). Each rotatable button (572) that is
in the "activated" position and in contact with trigger (528) may
be configured to signal to circuit board (34) to activate or
deactivate certain features or modes of operations. Additionally or
alternatively, a combination of rotatable buttons (572) in the
"activated" position and in contact with trigger (528) may be
configured to signal to circuit board (34) to activate or
deactivate certain features or modes of operation. Optionally,
circuit board (34) may also be configured to only deactivate
certain feature and/or modes of operation when a specific rotatable
button (572) or combinations of rotatable buttons (572) are in the
"activated" position and in contact with trigger (528). Other
functionalities of rotatable buttons (572) being activated or
deactivated will be apparent to one having ordinary skill in the
art in view of the teachings herein.
[0122] For example, a specific individual rotatable button (572) or
combination of rotatable buttons (572) being rotated into the
"activated" position may signal to circuit board (34), when trigger
(528) is rotated toward pistol grip (524), to activate a "cool
blade after transection" feature. This feature may provide cooling
of ultrasonic blade (160) after end effector (140) has been used to
transect tissue. Alternatively, a specific individual rotatable
button (572) or combination of rotatable buttons (572) rotated into
the activated position may signal to circuit board (34), when
trigger (528) is rotated toward pistol grip (524), to activate a
feature that leaves blade (160) hot after a transection. Another
specific individual rotatable button (572) or combination of
rotatable buttons (572) rotated into the activated position may
signal to circuit board (34), when trigger (528) is rotated toward
pistol grip (524), to activate a low power setting or a high power
setting.
[0123] As shown in FIG. 9C, once trigger (528) has been pivoted to
a closed position relative to pistol grip (524), the operator may
actuate finger grip (560) toward trigger (528), causing lever (562)
to rotate or deflect upwardly to make contact with activation
button (526). Activation button (526) will activate ultrasonic
blade (160), while the contact between trigger (528) and rotatable
buttons (572) in the "activated" position determines the features
and/or modes of operation at which the ultrasonic blade (160) is
activated.
[0124] Lever (562) may be rotatably coupled to trigger (528) such
that actuation of finger grip (560) toward trigger (528) causes
lever (562) to rotate upwardly to make contact with activation
button (526). Lever (562) may also be biased to the positions shown
in FIGS. 9A-9B, such that once the operator releases compression
force off finger grip (560), lever (562) returns to the positions
shown in FIGS. 9A-9B. Any other suitable methods in which lever
(562) and finger grip (560) activate button (526) will be apparent
to one having ordinary skill in the art in view of the teachings
herein. Alternatively, button (526) may be placed on other
locations of body (522) that obviates the need to have lever (526)
and finger grip (560), such as the locations where button (126,
226, 326, 426) is in relation to body (122, 222, 322, 422)
described above.
[0125] Handle assembly (520) of the present example further
includes an RF activation button (574). This button (574) is
operable to provide the delivery of RF electrosurgical energy to
tissue via end effector (140). To that end, end effector (140) may
be modified to be configured and operable in accordance with at
least some of the teachings of U.S. Pat. No. 8,663,220, entitled
"Ultrasonic Electrosurgical Instruments," issued Mar. 4, 2014, the
disclosure of which is incorporated by reference herein. In
addition or in the alternative, button (574) may be configured and
operable in accordance with at least some of the teachings of U.S.
Pub. No. 2015/0141981, entitled "Ultrasonic Surgical Instrument
with Electrosurgical Feature," published May 21, 2015, the
disclosure of which is incorporated by reference herein. It should
be understood that button (574) may be readily incorporated into
any of the various other handle assemblies describe herein. It
should also be understood that button (574) may simply be omitted
from handle assembly (574), if desired.
[0126] As another merely illustrative variation, the proximal face
of trigger (528) may have one or more discrete buttons that are
engaged by whichever rotatable button(s) (572) is/are rotated to
the activated position when trigger (528) is pivoted toward pistol
grip (524). In some such versions, these buttons on trigger (528)
are actuated simultaneously with whichever rotatable button(s)
(572) is/are rotated to the activated position when trigger (528)
is pivoted toward pistol grip (524). In some other versions,
rotatable buttons (572) are simply passive stops that activate the
buttons on trigger (528), such that rotatable buttons (572) are not
capable of themselves being actuated.
[0127] C. Activation Button with Integrated Damping System
[0128] FIGS. 12A-12C show an alternative handle assembly (620) that
may be incorporated into ultrasonic surgical instrument (100)
described above. Like handle assembly (120), handle assembly (620)
of this example includes a body (622), a pistol grip (624), and a
trigger (628). These components are substantially similar to body
(122), pistol grip (124), and trigger (128) described above, with
the differences described below. Handle assembly (620) also
receives an ultrasonic transducer (112), just like handle assembly
(120) described above. It should be understood that clamp arm (144)
may be coupled with trigger (628) such that clamp arm (144) is
pivotable toward ultrasonic blade (160) in response to pivoting of
trigger (628) toward pistol grip (624); and such that clamp arm
(144) is pivotable away from ultrasonic blade (160) in response to
pivoting of trigger (628) away from pistol grip (624). Various
suitable ways in which clamp arm (144) may be coupled with trigger
(628) will be apparent to those of ordinary skill in the art in
view of the teachings herein. In some versions, one or more
resilient members are used to bias clamp arm (144) and/or trigger
(628) to the open position.
[0129] While handle assembly (120) includes two activation buttons
(126) located on body (122), with one button (126) activating blade
(160) at a low power and another button (126) activating blade
(160) at a high power; handle assembly (620) of the present example
includes only one activation button (626) located on the area of
pistol grip (624) facing trigger (628). Activation button (626) is
positioned to make contact with the bottom end of trigger (628)
when trigger (628) is pivoted almost fully toward pistol grip
(624). Activation button (626) is positioned within a damping
system (625) that is fixed to pistol grip (624). Damping system
(625) of the present example comprises a dashpot that resists
motion of activation button (626) via viscous friction. The
resistance force imparted by damping system (625) against
activation button (626) is proportional to the velocity of button
(626). Various suitable components and configurations that may be
used to form damping system (625) will be apparent to those of
ordinary skill in the art in view of the teachings herein.
[0130] Activation button (626) is configured to activate ultrasonic
blade (160) once activation button (626) is sufficiently actuated
within damping system (625). Therefore, pivoting trigger (628)
toward pistol grip (624) will compress activation button (626)
within damping system (625) in order to activate ultrasonic blade
(160). However, as noted above and as will be described in greater
detail below, damping system (625) is configured to at least
partially prevent activation of ultrasonic blade (160) if trigger
(628) pivots too quickly toward pistol grip (624).
[0131] FIG. 12A shows trigger (628) in an open position relative to
pistol grip (624), such that trigger (628) does not make contact
with activation button (626). FIG. 12B shows trigger (628) pivoting
toward pistol grip (624) to initially contact activation button
(626). As can be seen, trigger (628) imparts a force to actuate
activation button (626) within damping system (625) in an attempt
to sufficiently compress activation button (626) within damping
system (625) to activate ultrasonic blade (160). However, damping
system (625) provides a responding force to the force imparted on
activation button (626) by trigger (628). The responding force
provided by damping system (625) is proportionate to how quickly
trigger (628) rotates toward pistol grip (624). Therefore, if the
operator rotates trigger (628) toward pistol grip (624) with too
much rotational velocity, damping system (625) will sufficiently
prevent activation button (626) from activating ultrasonic blade
(160), at least for a moment. However, as shown in FIG. 12C, if the
operator rotates trigger (628) toward pistol grip (624) at a
rotational velocity where the responding force of damping system
(625) cannot sufficiently resist the force imparted on button (626)
by trigger (628), then button (626) will sufficiently compress
within damping system (62) in order to activate ultrasonic blade
(160).
[0132] It should be understood that damping system (625) may be
implemented in any activation button (126, 226, 326, 426, 626, 726,
926) or any other buttons (572, 1062, 1064, 1066) mentioned
herein.
[0133] D. Trigger with Two-Stage Closure for Activating Ultrasonic
Blade
[0134] FIGS. 13A-13C show an alternative handle assembly (720) that
may be incorporated into ultrasonic surgical instrument (100)
described above. Like handle assembly (120), handle assembly (720)
of this example includes a body (722), a pistol grip (724), and a
trigger (728). These components are substantially similar to body
(122), pistol grip (124), and trigger (128) described above, with
the differences described below. Handle assembly (720) also
receives an ultrasonic transducer (112), just like handle assembly
(120) described above. It should be understood that clamp arm (144)
may be coupled with trigger (728) such that clamp arm (144) is
pivotable toward ultrasonic blade (160) in response to pivoting of
trigger (728) toward pistol grip (724); and such that clamp arm
(144) is pivotable away from ultrasonic blade (160) in response to
pivoting of trigger (728) away from pistol grip (724). Various
suitable ways in which clamp arm (144) may be coupled with trigger
(728) will be apparent to those of ordinary skill in the art in
view of the teachings herein. In some versions, one or more
resilient members are used to bias clamp arm (144) and/or trigger
(728) to the open position.
[0135] While handle assembly (120) includes two activation buttons
(126) located on body (122), with one button (126) activating blade
(160) at a low power and another button (126) activating blade
(160) at a high power, handle assembly (720) of the present example
includes only one activation button (726) located on the area of
pistol grip (726) facing trigger (728). Handle assembly (720) also
includes an activation trigger (760) that is pivotable toward and
away from pistol grip (724). As will be described in greater detail
below, activation button (726) is positioned within pistol grip
(724) to make contact with activation trigger (760) when activation
trigger (760) pivots towards pistol grip (724). Activation trigger
(760) is thus capable of compressing activation button (726) in
order to activate ultrasonic blade (160).
[0136] Trigger (728) includes a rotation stop (727) and a slot
(729). Activation trigger (760) includes a projection (762)
slidably housed within slot (729). By way of example only, slot
(729) and projection (762) may have complementary dovetail
configurations, complementary "T" shaped configurations, or any
other suitable configurations. As seen in FIGS. 13A-13B, trigger
and activation trigger (760) are configured to unitarily travel
with each other until rotation stop (727) of trigger (728) makes
contact with pistol grip (724). Once stop (727) of trigger (728)
makes contact with pistol grip (724), trigger (728) is prevented
from further rotation toward pistol grip (724). When trigger (728)
is rotated to the position shown in FIG. 13B, clamp arm (144) is
sufficiently pivoted toward blade (160) to grasp tissue. Once
trigger (728) and activation trigger (760) are rotated to the
position shown in FIG. 13B, activation button (726) is not yet
compressed by activation trigger (760), yet trigger (728) is
sufficiently rotated so that end effector (140) may grasp tissue.
Therefore, the operator may grasp tissue utilizing handle assembly
(720) without yet activating ultrasonic blade (160).
[0137] The operator may grasp both trigger (728) and activation
trigger (760) to pivot trigger (728) and activation trigger (760)
unitarily. Alternatively, the operator may grasp only trigger (728)
to pivot both trigger (728) and activation trigger (760) from the
position shown in FIG. 13A to the position shown in FIG. 13B. If
the operator only grasps trigger (728) to pivot both trigger (728)
and activation trigger (760), the distal end of slot (729) may make
contact with protrusion (762) to thereby move activation trigger
(760) from the position shown in FIG. 13A to the position shown in
FIG. 13B.
[0138] As shown in FIG. 13C, the operator may further actuate
activation trigger (760) relative to trigger (728) after reaching
the state shown in FIG. 13B. Protrusion (762) slides within slot
(729) or trigger (728), thereby enabling further actuation of
activation trigger (760) relative to trigger (728). Activation
trigger (760) is configured to actuate toward, and make contact
with, pistol grip (724). Activation button (726) is located on a
portion of pistol grip (724) facing activation trigger (760), such
that complete actuation of activation trigger (760) compresses
activation button (726), thereby activation ultrasonic blade
(160).
[0139] While the present example has trigger (728) and activation
trigger (760) slidably coupled together by slot (729) and
protrusion (762), any other suitable manner of sildably coupling
trigger (728) and activation trigger (760) may be utilized. For
example, trigger (728) and activation trigger (760) may be coupled
by a spring that biases trigger (728) and activation trigger (760)
together. In such versions, activation trigger (760) may travel
from the position shown in FIG. 13B to the position shown in FIG.
13C by the operator overcoming the biasing force coupling trigger
(728) and activation trigger (760).
[0140] FIGS. 14A-14C show an alternative handle assembly (820) that
may be incorporated into ultrasonic surgical instrument (100)
described above. Like handle assembly (120), handle assembly (820)
of this example includes a body (822), a pistol grip (824), and a
trigger (828). These components are substantially similar to body
(122), pistol grip (124), and trigger (128) described above, with
the differences described below. Handle assembly (820) also
receives an ultrasonic transducer (112), just like handle assembly
(120) described above. It should be understood that clamp arm (144)
may be coupled with trigger (828) such that clamp arm (144) is
pivotable toward ultrasonic blade (160) in response to pivoting of
trigger (828) toward pistol grip (824); and such that clamp arm
(144) is pivotable away from ultrasonic blade (160) in response to
pivoting of trigger (828) away from pistol grip (824). Various
suitable ways in which clamp arm (144) may be coupled with trigger
(828) will be apparent to those of ordinary skill in the art in
view of the teachings herein. In some versions, one or more
resilient members are used to bias clamp arm (144) and/or trigger
(828) to the open position.
[0141] While handle assembly (120) includes two activation buttons
(126) located on body (122), with one button (126) activating blade
(160) at a low power and another button (126) activating blade
(160) at a high power; handle assembly (820) of the present example
has no activation button. Instead, handle assembly (820) of this
example has an activation trigger (826). Trigger (828) is pivotable
toward and away from pistol grip (824) independently of activation
trigger (826). Activation trigger (826) is located distally in
relation to trigger (828). The bottom ends of trigger (828) and
activation trigger (826) are in contact in the position shown in
FIG. 14A in this example. However, this relationship is merely
optional, as ends of trigger (828) and activation trigger (826) may
be distanced apart from one another in some other variations.
[0142] FIG. 14A shows trigger (828) in the open position. With
trigger (282) at the position shown in FIG. 14A, clamp arm (144) is
pivoted away from ultrasonic blade (160). Additionally, activation
trigger (826) is also in the open position. When activation trigger
(826) is in the open position, ultrasonic blade (160) is not
activated.
[0143] As shown in FIGS. 14A-14B, trigger (828) may pivot toward
pistol grip (824) in order to pivot clamp arm (144) toward
ultrasonic blade (160). At the position shown in FIG. 14B, end
effector (140) is capable of grasping tissue. Additionally,
activation trigger (826) is still in the open position. Therefore,
ultrasonic blade (160) is not yet activated. The operator may thus
pivot trigger (828) toward pistol grip (824) in order to grasp and
manipulate tissue without activating ultrasonic blade (160).
Trigger (828) may also be selectively latched closed so that the
operator no longer has to grasp trigger (828) in order to grasp
tissue with end effector (140).
[0144] As shown in FIG. 14C, activation trigger (826) is rotated
toward pistol grip (824) while trigger (828) remains pivoted toward
pistol grip (824). At this position, activation trigger (826) is
rotated to an "activated" position, thereby activating ultrasonic
blade (160). While current FIGS. 14A-14C show trigger (828)
pivoting toward pistol grip (824) first to grasp tissue, and then
activation trigger (826) pivoting toward pistol grip (824)
independently to activate ultrasonic blade (160), the operator may
choose to simply actuate activation trigger (826) to thereby rotate
both trigger (828) and activation trigger (826) simultaneously, to
thereby grasp tissue and activate ultrasonic blade (160)
simultaneously.
[0145] It should be understood that activation trigger (826) may be
utilized in place of activation button (126, 226, 326, 426, 526,
626, 726, 926) in handle assembly (120, 220, 320, 420, 520, 620,
720, 920) respectively.
[0146] E. Trigger with Lateral Adjustment for Mode Defining
Positions
[0147] FIGS. 15A-18B show an alternative handle assembly (920) that
may be incorporated into ultrasonic surgical instrument (100)
described above. Like handle assembly (120), handle assembly (920)
of this example includes a body (922), a pistol grip (924), and a
trigger (928). These components are substantially similar to body
(122), pistol grip (124), and trigger (128) described above, with
the differences described below. Handle assembly (920) also
receives an ultrasonic transducer (112), just like handle assembly
(120) described above. It should be understood that clamp arm (144)
may be coupled with trigger (928) such that clamp arm (144) is
pivotable toward ultrasonic blade (160) in response to pivoting of
trigger (928) toward pistol grip (924); and such that clamp arm
(144) is pivotable away from ultrasonic blade (160) in response to
pivoting of trigger (928) away from pistol grip (924). Various
suitable ways in which clamp arm (144) may be coupled with trigger
(928) will be apparent to those of ordinary skill in the art in
view of the teachings herein. In some versions, one or more
resilient members are used to bias clamp arm (144) and/or trigger
(928) to the open position.
[0148] As will be described in greater detail below, trigger (928)
is configured to pivot along two different dimensions. In
particular, trigger (928) is configured to pivot along a first
dimension toward and away from pistol grip (924), just like the
other triggers described herein. However, unlike the other triggers
described herein, trigger (928) of the present example is also
configured to pivot along a second dimension that is perpendicular
to the first dimension. In other words, trigger (928) is operable
to pivot along a plane that is laterally oriented relative to the
longitudinal axis of shaft assembly (130); in addition to being
operable to pivot along a plane that is parallel to the
longitudinal axis of shaft assembly (130).
[0149] While handle assembly (120) includes two activation buttons
(126) located on body (122), with one button (126) activating blade
(160) at a low power and another button (126) activating blade
(160) at a high power; handle assembly (920) includes only one
activation button (926). In addition, body (922) of the present
example houses a mode selection frame (960) having three individual
power switches (961, 963, 965). Trigger (928) is fixed to a
projection (970) that extends through a slot (923) of body (922). A
bridge (972) is attached to the top of projection (970). Bridge
(972) is housed within mode selection frame (960). As will be
described in greater detail below, bridge (972) is configured to
make contact with an individual power switch (961, 963, 965) to
determine the power level at which ultrasonic blade (160)
operates.
[0150] As can be seen in FIGS. 15A-15B, bridge (972) is located
within mode selection frame (960) such that as trigger (928) pivots
toward pistol grip (924), bridge (972) travels within mode
selection frame (960) to make contact with one of power switches
(961, 963, 965). As will be described in greater detail below,
bridge (972) may only activate one power switch (961, 963, 965) at
a time, corresponding to the lateral pivoting location of trigger
(928) relative to body (922). Individual switches (961, 963, 965)
are in electrical communication with circuit board (34). Activation
of individual switches (961, 963, 965) via contact with bridge
(972) will effect a selection of a power mode in circuit board
(34). Thus, when button (926) is activated while bridge (972) makes
contact with an individual switch (961, 963, 965), transducer (112)
will provide a corresponding power level or amplitude of ultrasonic
energy to ultrasonic blade (160) based on a control signal from
circuit board (34).
[0151] Trigger (928) may pivot laterally relative to body (922)
within slot (923). As mentioned above, projection (970) extends
within body (922) through slot (923). Therefore, projection (970)
is located above slot (923), while trigger (928) is located below
slot (923). When trigger (928) pivots laterally to the left of body
(922) below slot (923), projection (970) pivots laterally to the
right of body (922) above slot (923). As mentioned above, bridge
(972) is fixed to the top of projection (970), such that bridge
(972) pivots laterally relative to body (922) with projection
(970).
[0152] As can be seen in FIGS. 16A-18B, mode selection frame (960)
defines a lateral deflection channel (968), a low guide channel
(962), a medium guide channel (964), and a high guide channel
(966). As will be discussed in greater detail below, bridge (972)
is housed within mode selection frame (960) such that bridge (972)
may travel within each channel (962, 964, 966, 968). Low switch
(963) is fixed at the proximal end of low guide channel (962).
Medium switch (965) is fixed at the proximal end of medium guide
channel (964). High switch (967) is fixed at the proximal end of
high guide channel (966).
[0153] As shown in FIGS. 15A, 16A, 17A, and 18A, when trigger (928)
is in the open position relative to pistol grip (924), bridge (972)
is located within lateral deflection channel (968) of mode
selection frame (960). Trigger (928) is operable to pivot laterally
when bridge (972) is located within lateral deflection channel
(968). FIG. 16A shows trigger (928), projection (970), and bridge
(972) having no lateral deflection relative to body (922). Bridge
(972) is therefore longitudinally aligned with medium guide channel
(964). FIG. 16B shows trigger (928) pivoted toward pistol grip
(924), as also shown in FIG. 15B. Because trigger (928) is not
laterally deflected to rotate about slot (923), bridge (972)
longitudinally travels in the proximal direction within medium
guide channel (964) to make contact with medium switch (965). At
this point, medium switch (963) is activated by making contact with
bridge (972). Medium switch (963) thereby communicates a medium
power level to circuit board (34). Thus, activation of button (926)
while bridge (972) is in contact with medium switch (963) will
activate ultrasonic blade (160) at a medium power level.
[0154] FIG. 17A shows trigger (928) pivoted laterally to the left
of body (922) below slot (923). Therefore, projection (970) and
bridge (972) are laterally rotated to the right relative to body
(922) above slot (923). Bridge (972) is therefore longitudinally
aligned with low guide channel (962) in this state. FIG. 17B shows
trigger (928) pivoted toward pistol grip (924), as also shown in
FIG. 15B. Bridge (972) longitudinally travels in the proximal
direction within low guide channel (962) to make contact with low
switch (961). At this point, low switch (961) is activated by
making contact with bridge (972). Low switch (961) thereby
communicates a low power level to circuit board (34). Thus,
activation of button (926) while bridge (972) is in contact with
low switch (961) will activate ultrasonic blade (160) at a low
power level.
[0155] FIG. 18A shows trigger (928) pivoted laterally to the right
of body (922) below slot (923). Therefore, projection (970) and
bridge (972) are laterally rotated to the left relative to body
(922) above slot (923). Bridge (972) is therefore longitudinally
aligned with high guide channel (966) in this state. FIG. 18B shows
trigger (928) pivoted toward pistol grip (924), as also shown in
FIG. 15B. Bridge (972) longitudinally travels in the proximal
direction within high guide channel (966) to make contact with high
switch (965). At this point, high switch (965) is activated by
making contact with bridge (972). High switch (965) thereby
communicates a high power level to circuit board (34). Thus,
activation of button (926) while bridge (972) is in contact with
high switch (965) will activate ultrasonic blade (160) at a high
power level.
[0156] While the current example shows trigger (928) pivoting
laterally within slot (923) relative to body (922), it is
envisioned that trigger (928) may alternatively translate laterally
within slot (923) relative to body (922). Therefore, if trigger
(928) is translated laterally to the right below slot (923),
projection (970) and bridge (972) will also translate laterally to
the right above slot (923).
[0157] F. Tri-Lever Trigger
[0158] FIGS. 19A-20 show an alternative handle assembly (1020) that
may be incorporated into ultrasonic surgical instrument (100)
described above. Like handle assembly (120), handle assembly (1020)
of this example includes a body (1022), a pistol grip (1024), and a
trigger (1028). These components are substantially similar to body
(122), pistol grip (124), and trigger (128) described above, with
the differences described below. Handle assembly (1020) also
receives an ultrasonic transducer (112), just like handle assembly
(120) described above. It should be understood that clamp arm (144)
may be coupled with trigger (1028) such that clamp arm (144) is
pivotable toward ultrasonic blade (160) in response to pivoting of
trigger (1028) toward pistol grip (1024); and such that clamp arm
(144) is pivotable away from ultrasonic blade (160) in response to
pivoting of trigger (1028) away from pistol grip (1024). Various
suitable ways in which clamp arm (144) may be coupled with trigger
(1028) will be apparent to those of ordinary skill in the art in
view of the teachings herein. In some versions, one or more
resilient members are used to bias clamp arm (144) and/or trigger
(1028) to the open position.
[0159] Trigger assembly (1028) of the present example comprise a
tri-lever trigger that is pivotally coupled to body (1022) such
that trigger assembly (1028) is capable of pivoting toward and away
from pistol grip (1024). In some versions, one or more resilient
members are used to bias trigger assembly (1028) to the open
position, as shown in FIGS. 19A and 20. Trigger assembly (1028)
includes a short trigger (1072), a medium trigger (1074), and a
long trigger (1076). As best seen in FIG. 20, individual triggers
(1072, 1074, 1076) are in a stacked arrangement. In particular,
short trigger (1072) is located proximally in relation to medium
trigger (1074), which is located proximally in relation to long
trigger (1076). Thus, pivoting long trigger (1076) toward pistol
grip (1024) forces both medium trigger (1074) and short trigger
(1072) to also pivot toward pistol grip (1024). Additionally,
pivoting medium trigger (1074) toward pistol grip (1024) forces
short trigger (1072) to pivot toward pistol grip (1024), but does
not force long trigger (1076) to pivot toward pistol grip (1024).
Pivoting short trigger (1072) toward pistol grip (1024) does not
force longer trigger (1076) or medium trigger (1074) to pivot
toward pistol grip (1024). In some other versions, triggers (1072,
1074, 1076) are arranged such that pivotal movement of one trigger
(1072, 1074, 1076) does not necessarily force pivotal movement of
any other trigger (1072, 1074, 1076). In such versions, the
operator may nevertheless pivot more than one trigger (1072, 1074,
1076) simultaneously by engaging more than one trigger (1072, 1074,
1076) with the operator's hand.
[0160] Button (1062) is positioned to be actuated by trigger (1072)
when short trigger (1072) pivots toward pistol grip (1024). Button
(1064) is positioned to be actuated by medium trigger (1074) when
medium trigger (1074) pivots toward pistol grip (1024). Button
(1066) is positioned to be actuated by long trigger (1076) when
long trigger (1076) pivots toward pistol grip (1024). While buttons
(1062, 1064, 1066) are located along pistol grip (1024) in the
present example, buttons (1062, 1064, 1066) may instead be located
along any suitable location of handle assembly (1020) in order to
make selective contact with triggers (1072, 1074, 1076),
respectively, when triggers (1072, 1074, 1076) are pivoted toward
pistol grip (1024). In the present example, each trigger (1072,
1074, 1076) is independently capable of pivoting clamp arm (144)
toward blade (160). Thus, clamp arm (144) may be pivoted toward
blade (160) regardless of which trigger (1072, 1074, 1076) or
combination of triggers (1072, 1074, 1076) is pivoted toward pistol
grip (1024). In some other versions, only one or two of triggers
(1072, 1074, 1076) is operable to pivot clamp arm (144) toward
blade (160). In such examples, the other trigger (1072, 1074, 1076)
or triggers (1072, 1074, 1076) merely activates/activate an
energized state at end effector (140) (e.g., vibration of blade
(160) and/or application of RF electrosurgical energy through end
effector (140), etc.).
[0161] Buttons (1062, 1064, 1066) are in electrical communication
with circuit board (34) in order to control various functions of
instrument (100) when buttons (1062, 1064, 1066) are pressed or
released by triggers (1072, 1074, 1076). FIGS. 19A-19D show one
such example. As shown in FIG. 19A, trigger assembly (1028) is in
an open position, such that short trigger (1072), medium trigger
(1074), and long trigger (1076) are not in contact with respective
buttons (1062, 1064, 1066). As shown in FIG. 19B, the operator may
pivot the entire trigger assembly (1028) toward pistol grip (1024)
such that short trigger (1072) makes contact with button (1062),
medium trigger (1074) makes contact with button (1064), and long
trigger (1076) makes contact with button (1072). Clamp arm (144)
closes toward blade (160) as triggers (1072, 1074, 1076) pivot
toward the position of FIG. 19B. With all three buttons (1062,
1064, 1066) being activated, circuit board (34) activates
transducer (112) to drive blade (160) to vibrate ultrasonically at
a high level of power.
[0162] In some versions, handle assembly (1020) includes one or
more tactile feedback features and/or latching features that
provide tactile feedback and/or selectively lock triggers (1072,
1074, 1076) in place when triggers (1072, 1074, 1076) reach the
position shown in FIG. 19B. In the present example, handle assembly
(1020) transitions directly from the state shown in FIG. 19A to the
state shown in FIG. 19B. In some other instances, handle assembly
(1020) may transition from the state shown in FIG. 19C or the state
shown in FIG. 19D to the state shown in FIG. 19B. It should
therefore be understood that the operator may adjust the power
level of ultrasonic blade (160) while tissue is being compressed
against blade (160) by clamp arm (144).
[0163] FIG. 19C shows handle assembly (1020) in a state where only
triggers (1072, 1074) have been pivoted toward pistol grip (1024).
Again, clamp arm (144) closes toward blade (160) as triggers (1072,
1074) pivot toward the position of FIG. 19C. With only buttons
(1062, 1064) being activated, circuit board (34) activates
transducer (112) to drive blade (160) to vibrate ultrasonically at
a medium level of power. In some versions, handle assembly (1020)
includes one or more tactile feedback features and/or latching
features that provide tactile feedback and/or selectively lock
triggers (1072, 1074) in place when triggers (1072, 1074) reach the
position shown in FIG. 19C. In the present example, handle assembly
(1020) transitions directly from the state shown in FIG. 19A to the
state shown in FIG. 19C. In some other instances, handle assembly
(1020) may transition from the state shown in FIG. 19B or the state
shown in FIG. 19D to the state shown in FIG. 19C. It should
therefore be understood that the operator may adjust the power
level of ultrasonic blade (160) while tissue is being compressed
against blade (160) by clamp arm (144).
[0164] FIG. 19D shows handle assembly (1020) in a state where only
trigger (1072) has been pivoted toward pistol grip (1024). Again,
clamp arm (144) closes toward blade (160) as trigger (1072) pivots
toward the position of FIG. 19D. With only button (1062) being
activated, circuit board (34) activates transducer (112) to drive
blade (160) to vibrate ultrasonically at a low level of power. In
some versions, handle assembly (1020) includes one or more tactile
feedback features and/or latching features that provide tactile
feedback and/or selectively lock trigger (1072) in place when
trigger (1072) reaches the position shown in FIG. 19D. In the
present example, handle assembly (1020) transitions directly from
the state shown in FIG. 19A to the state shown in FIG. 19D. In some
other instances, handle assembly (1020) may transition from the
state shown in FIG. 19B or the state shown in FIG. 19B to the state
shown in FIG. 19D. It should therefore be understood that the
operator may adjust the power level of ultrasonic blade (160) while
tissue is being compressed against blade (160) by clamp arm
(144).
[0165] In some exemplary variations, handle assembly (1020) is
incorporated into an instrument with an end effector that is
operable to apply RF electrosurgical energy to tissue, in addition
to or as an alternative to being operable to apply ultrasonic
energy to tissue. In some such variations, at least one button
(1062, 1064, 1066) may be configured to trigger the activation of
one or more RF electrosurgical electrodes in the end effector. In
other words, at least one trigger (1072, 1074, 1076) may be
specifically associated with activating RF electrosurgical
features. In addition or in the alternative, handle assembly (1020)
may be incorporated into an instrument with an end effector that
has a translating knife member instead of ultrasonic blade (160).
Such a translating knife member may be configured to sever tissue
and may be driven by a motor. In such versions, at least one button
(1062, 1064, 1066) may be configured to trigger the activation of
the motor. In other words, at least one trigger (1072, 1074, 1076)
may be specifically associated with driving the knife member to
sever tissue. Other suitable variations will be apparent to those
of ordinary skill in the art in view of the teachings herein.
IV. EXEMPLARY COMBINATIONS
[0166] The following examples relate to various non-exhaustive ways
in which the teachings herein may be combined or applied. It should
be understood that the following examples are not intended to
restrict the coverage of any claims that may be presented at any
time in this application or in subsequent filings of this
application. No disclaimer is intended. The following examples are
being provided for nothing more than merely illustrative purposes.
It is contemplated that the various teachings herein may be
arranged and applied in numerous other ways. It is also
contemplated that some variations may omit certain features
referred to in the below examples. Therefore, none of the aspects
or features referred to below should be deemed critical unless
otherwise explicitly indicated as such at a later date by the
inventors or by a successor in interest to the inventors. If any
claims are presented in this application or in subsequent filings
related to this application that include additional features beyond
those referred to below, those additional features shall not be
presumed to have been added for any reason relating to
patentability.
Example 1
[0167] A surgical instrument, comprising: (a) an end effector,
wherein the end effector is configured to operate at a first energy
level and at a second energy level, wherein the end effector is
further configured to transition between an open position and a
closed position, wherein the end effector is configured to grasp
tissue in the closed position; and (b) a handle assembly, wherein
the handle assembly comprises: (i) a body, (ii) a trigger pivotally
coupled to the body, wherein the trigger is configured to pivot in
a first direction relative to the body to actuate the end effector
from the open position to the closed position, and (ii) an
activation element, wherein the activation element is in
communication with the end effector, wherein the activation element
is configured to activate the end effector at either the first
energy level or the second energy level, wherein the trigger is
configured to either activate the activation element or determine
whether the end effector operates at the first energy level or the
second energy level.
Example 2
[0168] The surgical instrument of Example 1, wherein the trigger is
configured to pivot in the first direction to a first position,
wherein the trigger is configured to pivot further in the first
direction to a second position, wherein the end effector is
configured to operate at the first energy level when the trigger is
located at the first position, wherein the end effector is
configured to operate at the second energy level when the trigger
is located at the second position.
Example 3
[0169] The surgical instrument of Example 2, wherein the body
further comprises a first switch and a second switch, wherein the
trigger is configured to activate the first switch when the trigger
reaches the first position, wherein the trigger is configured to
activate the second switch when the trigger reaches the second
position.
Example 4
[0170] The surgical instrument of any one or more of Examples 2
through 3, wherein the body comprises a Hall Effect sensor, wherein
the trigger comprises a magnet, wherein the Hall Effect sensor is
configured to determine if the trigger is in the first position or
the second position.
Example 5
[0171] The surgical instrument of any one or more of Examples 2
through 4, wherein the body comprises a force transducer, wherein
the force transducer is configured to determine if the trigger is
in the first position or the second position.
Example 6
[0172] The surgical instrument of any one or more of Examples 1
through 5, wherein the body comprises a damping system, wherein the
activation element is coupled with the damping system, wherein the
damping system is configured to prevent activation of the
activation element if the trigger contacts the activation element
at a velocity above a threshold.
Example 7
[0173] The surgical instrument of any one or more of Examples 1
through 6, wherein the body further comprises: (i) a pistol grip
defining a first slot and a second slot, (ii) a first movable
button housed within the first slot, wherein the first movable
button is configured to move from an activated state to a
deactivated state, and (iii) a second movable button housed within
the second slot, wherein the second movable button is configured to
move from an activated state to a deactivated state.
Example 8
[0174] The surgical instrument of Example 7, wherein the trigger is
configured to pivot in the first direction toward the pistol grip
to contact the first moveable button or the second movable button
when the first moveable button or the second movable button are in
the activated state.
Example 9
[0175] The surgical instrument of Example 8, wherein the first
movable button is configured to rotate about a pivot in the first
slot.
Example 10
[0176] The surgical instrument of any one or more of Examples 8
through 9, wherein the first movable button is configured to alter
the functionality of the end effector when the trigger contacts the
first movable button in the activated state.
Example 11
[0177] The surgical instrument of any one or more of Examples 1
through 10, wherein the trigger comprises a first grip and a second
grip, wherein the first grip is configured to actuate the end
effector from the open position to the closed position, wherein the
second grip is configured to activate the activation element.
Example 12
[0178] The surgical instrument of Example 11, wherein the first
grip is configured to move independently of the second grip.
Example 13
[0179] The surgical instrument of any one or more of Examples 11
through 12, wherein the first grip and the second grip are
configured to travel together though a first range of motion,
wherein the second grip is configured to travel through a second
range of motion independent of the first grip.
Example 14
[0180] The surgical instrument of any one or more of Examples 1
through 13, wherein the trigger is further configured to move in a
second direction relative to the body, wherein the trigger is
configured to determine whether the end effector operates at the
first energy level or the second energy level based on a position
of the trigger in the second direction.
Example 15
[0181] The surgical instrument of Example 14, wherein the body
further comprise a mode selection frame, wherein a portion of the
trigger is housed within the mode selection frame.
Example 16
[0182] The surgical instrument of Example 15, wherein the mode
selection frame comprises a mode selection channel, a first energy
channel, and a second energy channel, wherein the portion of the
trigger housed within the mode selection frame is configured to
travel in the mode selection channel when the trigger moves in the
second direction, wherein the portion of the trigger housed within
the mode selection frame is configured to travel in either the
first energy channel or the second energy channel when the trigger
moves in the first direction.
Example 17
[0183] The surgical instrument of Example 16, wherein the trigger
is configured to pivot relative to the body while moving in the
second direction.
Example 18
[0184] A surgical instrument, comprising: (a) an end effector,
wherein the end effector is configured to operate at a first energy
level and at a second energy level, wherein the end effector is
further configured to transition between an open position and a
closed position, wherein the end effector is configured to grasp
tissue in the closed position; and (b) a handle assembly, wherein
the handle assembly comprises: (i) a body comprising a first
button, a second button, and a third button, wherein each button is
configured to provide a respective activated state of the end
effector, and (ii) a trigger assembly pivotally coupled to the
body, wherein the trigger assembly further comprises: (A) a first
trigger configured pivot from a first open position to a first
closed position, wherein the first trigger is configured to contact
the first button in the first closed position, (B) a second trigger
configured to pivot from a second open position to a second closed
position, wherein the second trigger is configured to contact the
second button in the second closed position, wherein the second
trigger is shorter than the first trigger, and (C) a third trigger
configured to pivot from a third open position to a third closed
position, wherein the third trigger is configured to contact the
third button in the third closed position, wherein the third
trigger is short than the second trigger.
Example 19
[0185] The surgical instrument of Example 18, wherein at least one
of the first trigger, the second trigger, or the third trigger is
further operable to transition the end effector from the open
position to the closed position.
Example 20
[0186] A surgical instrument, comprising: (a) an end effector,
wherein the end effector is configured to operate at a first energy
level and at a second energy level, wherein the end effector is
further configured to transition between an open position and a
closed position, wherein the end effector is configured to grasp
tissue in the closed position; and (b) a handle assembly, wherein
the handle assembly comprises: (i) a body, (ii) a trigger pivotally
coupled to the body, wherein the trigger is configured to pivot in
a first direction relative to the body to actuate the end effector
from the open position to the closed position, wherein the trigger
is configured to actuate in a second direction relative to the body
to select whether the end effector operates at the first energy
level or the second energy level, and (ii) an activation element,
wherein the activation element is in communication with the end
effector, wherein the activation element is configured to activate
the end effector at either the first energy level or the second
energy level.
V. MISCELLANEOUS
[0187] It should be understood that any of the versions of
instruments described herein may include various other features in
addition to or in lieu of those described above. By way of example
only, any of the instruments described herein may also include one
or more of the various features disclosed in any of the various
references that are incorporated by reference herein. It should
also be understood that the teachings herein may be readily applied
to any of the instruments described in any of the other references
cited herein, such that the teachings herein may be readily
combined with the teachings of any of the references cited herein
in numerous ways. Other types of instruments into which the
teachings herein may be incorporated will be apparent to those of
ordinary skill in the art.
[0188] It should also be understood that any ranges of values
referred to herein should be read to include the upper and lower
boundaries of such ranges. For instance, a range expressed as
ranging "between approximately 1.0 inches and approximately 1.5
inches" should be read to include approximately 1.0 inches and
approximately 1.5 inches, in addition to including the values
between those upper and lower boundaries.
[0189] It should be appreciated that any patent, publication, or
other disclosure material, in whole or in part, that is said to be
incorporated by reference herein is incorporated herein only to the
extent that the incorporated material does not conflict with
existing definitions, statements, or other disclosure material set
forth in this disclosure. As such, and to the extent necessary, the
disclosure as explicitly set forth herein supersedes any
conflicting material incorporated herein by reference. Any
material, or portion thereof, that is said to be incorporated by
reference herein, but which conflicts with existing definitions,
statements, or other disclosure material set forth herein will only
be incorporated to the extent that no conflict arises between that
incorporated material and the existing disclosure material.
[0190] Versions of the devices described above may have application
in conventional medical treatments and procedures conducted by a
medical professional, as well as application in robotic-assisted
medical treatments and procedures. By way of example only, various
teachings herein may be readily incorporated into a robotic
surgical system such as the DAVINCI.TM. system by Intuitive
Surgical, Inc., of Sunnyvale, Calif. Similarly, those of ordinary
skill in the art will recognize that various teachings herein may
be readily combined with various teachings of U.S. Pat. No.
6,783,524, entitled "Robotic Surgical Tool with Ultrasound
Cauterizing and Cutting Instrument," published Aug. 31, 2004, the
disclosure of which is incorporated by reference herein.
[0191] Versions described above may be designed to be disposed of
after a single use, or they can be designed to be used multiple
times. Versions may, in either or both cases, be reconditioned for
reuse after at least one use. Reconditioning may include any
combination of the steps of disassembly of the device, followed by
cleaning or replacement of particular pieces, and subsequent
reassembly. In particular, some versions of the device may be
disassembled, and any number of the particular pieces or parts of
the device may be selectively replaced or removed in any
combination. Upon cleaning and/or replacement of particular parts,
some versions of the device may be reassembled for subsequent use
either at a reconditioning facility, or by an operator immediately
prior to a procedure. Those skilled in the art will appreciate that
reconditioning of a device may utilize a variety of techniques for
disassembly, cleaning/replacement, and reassembly. Use of such
techniques, and the resulting reconditioned device, are all within
the scope of the present application.
[0192] By way of example only, versions described herein may be
sterilized before and/or after a procedure. In one sterilization
technique, the device is placed in a closed and sealed container,
such as a plastic or TYVEK bag. The container and device may then
be placed in a field of radiation that can penetrate the container,
such as gamma radiation, x-rays, or high-energy electrons. The
radiation may kill bacteria on the device and in the container. The
sterilized device may then be stored in the sterile container for
later use. A device may also be sterilized using any other
technique known in the art, including but not limited to beta or
gamma radiation, ethylene oxide, or steam.
[0193] Having shown and described various embodiments of the
present invention, further adaptations of the methods and systems
described herein may be accomplished by appropriate modifications
by one of ordinary skill in the art without departing from the
scope of the present invention. Several of such potential
modifications have been mentioned, and others will be apparent to
those skilled in the art. For instance, the examples, embodiments,
geometrics, materials, dimensions, ratios, steps, and the like
discussed above are illustrative and are not required. Accordingly,
the scope of the present invention should be considered in terms of
the following claims and is understood not to be limited to the
details of structure and operation shown and described in the
specification and drawings.
* * * * *