U.S. patent application number 13/275495 was filed with the patent office on 2012-05-10 for surgical instrument with charging devices.
Invention is credited to Kevin L. Houser, Donna L. Korvick, Ashvani K. Madan, John W. Willis, David C. Yates, Aron O. Zingman.
Application Number | 20120116265 13/275495 |
Document ID | / |
Family ID | 44936594 |
Filed Date | 2012-05-10 |
United States Patent
Application |
20120116265 |
Kind Code |
A1 |
Houser; Kevin L. ; et
al. |
May 10, 2012 |
SURGICAL INSTRUMENT WITH CHARGING DEVICES
Abstract
A surgical instrument includes a first power source and a second
power source. The first power source is configured to deliver power
to a surgical instrument at a first rate of discharge. The second
power source is configured to deliver power to the first power
source at a second rate of discharge. The first power source and
the second power source are positioned within the surgical
instrument. The first power source and the second power source are
further configured to communicate with a control module. The
control module may rely on power from the first power source to
drive an end effector of the surgical instrument. The end effector
may comprise a harmonic/ultrasonic blade, RF electrosurgical
electrodes, powered cutting/stapling features, and/or various other
types of components.
Inventors: |
Houser; Kevin L.;
(Springboro, OH) ; Yates; David C.; (West Chester,
OH) ; Willis; John W.; (Cincinnati, OH) ;
Zingman; Aron O.; (Cambridge, MA) ; Korvick; Donna
L.; (Maineville, OH) ; Madan; Ashvani K.;
(Mason, OH) |
Family ID: |
44936594 |
Appl. No.: |
13/275495 |
Filed: |
October 18, 2011 |
Related U.S. Patent Documents
|
|
|
|
|
|
Application
Number |
Filing Date |
Patent Number |
|
|
61410603 |
Nov 5, 2010 |
|
|
|
61487846 |
May 19, 2011 |
|
|
|
Current U.S.
Class: |
601/2 ; 606/1;
606/33; 606/34 |
Current CPC
Class: |
A61B 2017/00482
20130101; A61B 18/1445 20130101; A61B 2017/2933 20130101; A61B
2017/294 20130101; A61B 2018/00791 20130101; G02B 2027/011
20130101; H02J 7/0063 20130101; A61B 2018/00988 20130101; A61B
2017/00734 20130101; G02B 2027/0178 20130101; A61B 2017/293
20130101; A61B 17/00234 20130101; A61B 2017/320089 20170801; A61B
2090/0813 20160201; A61B 2018/1455 20130101; A61B 2017/00477
20130101; A61B 2017/00473 20130101; A61B 2018/00178 20130101; A61B
2017/00398 20130101; A61B 2090/0803 20160201; A61B 2017/2931
20130101; A61B 17/285 20130101; A61B 2017/0046 20130101; A61B
2017/320095 20170801; A61B 2017/320069 20170801; A61B 2017/00115
20130101; A61B 2018/1226 20130101; A61B 18/1206 20130101; A61B
34/30 20160201; A61B 2017/291 20130101; A61B 2018/1412 20130101;
A61B 2017/320094 20170801; A61B 90/08 20160201; A61B 2017/2929
20130101; H02J 2007/0067 20130101; A61B 2090/0814 20160201 |
Class at
Publication: |
601/2 ; 606/1;
606/33; 606/34 |
International
Class: |
A61B 18/12 20060101
A61B018/12; A61N 7/00 20060101 A61N007/00; A61B 18/18 20060101
A61B018/18; A61B 17/00 20060101 A61B017/00 |
Claims
1. An apparatus comprising: (a) a surgical instrument; (b) a first
power source in communication with the surgical instrument, wherein
the first power source is configured to deliver power to the
surgical instrument, wherein the first power source is operable to
be placed in the surgical instrument such that at least a portion
of the first power source is contained within the surgical
instrument, wherein the first power source has a first discharge
rate; (c) a second power source in communication with the first
power source, wherein the second power source is configured to
deliver power to the first power source, wherein the second power
source has a second discharge rate; and (d) a control module,
wherein the first power source and the second power source are
operable to communicate with the control module, wherein the
control module is operable to use the second power source to charge
the first power source.
2. The apparatus of claim 1, wherein the first power source
comprises a super capacitor.
3. The apparatus of claim 1, further comprising a visual indicator
operable to show the charge status of the first power source.
4. The apparatus of claim 1, wherein the first discharge rate is
faster than the second discharge rate.
5. The apparatus of claim 1, further comprising a switch operable
to trigger the delivery of power to the first power source.
6. The apparatus of claim 1, wherein the second power source is
configured to continually deliver power to the first power
source.
7. The apparatus of claim 1, wherein the first power source and the
second power source are sealed within the surgical instrument.
8. The apparatus of claim 1, wherein the surgical instrument
comprises a battery door configured to allow the second power
source to be removed from the surgical instrument.
9. The apparatus of claim 1, further comprising a switch configured
to control the delivery of power to the first power source, wherein
the switch is positioned on the surgical instrument proximate to a
handle assembly of the surgical instrument.
10. The apparatus of claim 1, wherein the second power source is
configured to provide power for the surgical instrument.
11. The apparatus of claim 10, wherein the first power source is
configured to supplement the power provided by the second power
source.
12. The apparatus of claim 10, wherein the first power source is
configured to be charged by excess power discharge of the second
power source.
13. The apparatus of claim 1, wherein the surgical instrument
comprises an ultrasonic surgical instrument having a harmonic blade
and an ultrasonic transducer in communication with at least the
first power source.
14. The apparatus of claim 1, wherein the first power source
comprises a rechargeable lithium ion battery.
15. The apparatus of claim 1, wherein the surgical instrument
comprises an RF electrosurgical instrument.
16. An apparatus comprising: (a) a surgical instrument configured
to deliver energy to tissue; (b) a first power source in
communication with the surgical instrument, wherein the first power
source is operable to deliver power to the surgical instrument,
wherein the first power source is configured to deliver power to
the surgical instrument at a high rate of discharge; and (c) a
second power source in communication with the surgical instrument,
wherein the second power source is operable to deliver power to the
first power source, wherein the second power source is configured
to deliver power at a lower rate of discharge than the first power
source, wherein the surgical instrument is configured to hold the
first power source and the second power source.
17. The apparatus of claim 16, wherein the first power source
comprises a super capacitor.
18. The apparatus of claim 16, wherein the second power source is
further operable to deliver power to the surgical instrument,
wherein the surgical instrument has a first power demand state, a
second power demand state, and a third power demand state, wherein
the second power source is operable to charge the first power
source when the surgical instrument is in the first power demand
state, wherein the second power source is operable to
simultaneously charge the first power source and deliver power to
the surgical instrument when the surgical instrument is in the
second power demand state, and wherein the second power source and
the first power source are operable to both deliver power to the
surgical instrument when the surgical instrument is in the third
power demand state.
19. The apparatus of claim 16, wherein the surgical instrument
comprises a power source door, wherein the second power source is
removable through the power source door.
20. A method for delivering power to a surgical instrument using a
first power source and a second power source, wherein the first
power source is configured to deliver power to the surgical
instrument at a high rate of discharge, wherein the second power
source is configured to deliver power to the first power source,
wherein the surgical instrument comprises a switch operable to
control the delivery of power from the second power source to the
first power source, the method comprising: (a) actuating the switch
to transfer power from the second power source to the first power
source; (b) powering the surgical instrument with the first power
source; (c) operating the surgical instrument; (d) determining that
the first power source requires additional power; and (e)
transferring power from the second power source to the first power
source to continue operating the surgical instrument.
Description
PRIORITY
[0001] This application claims priority to U.S. Provisional
Application Ser. No. 61/410,603, filed Nov. 5, 2010, entitled
"Energy-Based Surgical Instruments," the disclosure of which is
incorporated by reference herein. This application also claims
priority to U.S. Provisional Application Ser. No. 61/487,846, filed
May 19, 2011, entitled "Energy-Based Surgical Instruments," the
disclosure of which is incorporated by reference herein.
BACKGROUND
[0002] In some settings, endoscopic surgical instruments may be
preferred over traditional open surgical devices since a smaller
incision may reduce the post-operative recovery time and
complications. Consequently, some endoscopic surgical instruments
may be suitable for placement of a distal end effector at a desired
surgical site through a cannula of a trocar. These distal end
effectors may engage tissue in a number of ways to achieve a
diagnostic or therapeutic effect (e.g., endocutter, grasper,
cutter, stapler, clip applier, access device, drug/gene therapy
delivery device, and energy delivery device using ultrasound, RF,
laser, etc.). Endoscopic surgical instruments may include a shaft
between the end effector and a handle portion, which is manipulated
by the clinician. Such a shaft may enable insertion to a desired
depth and rotation about the longitudinal axis of the shaft,
thereby facilitating positioning of the end effector within the
patient.
[0003] Examples of endoscopic surgical instruments include those
disclosed in U.S. Pat. Pub. No. 2006/0079874, entitled "Tissue Pad
for Use with an Ultrasonic Surgical Instrument," published Apr. 13,
2006, the disclosure of which is incorporated by reference herein;
U.S. Pat. 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. Pat. Pub. No.
2007/0282333, entitled "Ultrasonic Waveguide and Blade," published
Dec. 6, 2007, the disclosure of which is incorporated by reference
herein; U.S. Pat. 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. Pat.
Pub. No. 2011/0015660, entitled "Rotating Transducer Mount for
Ultrasonic Surgical Instruments," published Jan. 20, 2011, the
disclosure of which is incorporated by reference herein; U.S. Pat.
No. 6,500,176, entitled "Electrosurgical Systems and Techniques for
Sealing Tissue," issued Dec. 31, 2002, the disclosure of which is
incorporated by reference herein; and U.S. Pat. Pub. No.
2011/0087218, entitled "Surgical Instrument Comprising First and
Second Drive Systems Actuatable by a Common Trigger Mechanism,"
published Apr. 14, 2011, the disclosure of which is incorporated by
reference herein. Additionally, such surgical tools may include a
cordless transducer such as that disclosed in U.S. Pat. Pub. No.
2009/0143797, entitled "Cordless Hand-held Ultrasonic Cautery
Cutting Device," published Jun. 4, 2009, the disclosure of which is
incorporated by reference herein. In addition, the surgical
instruments may be used, or adapted for use, in robotic-assisted
surgery settings such as that disclosed in 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.
[0004] While several systems and methods have been made and used
for surgical instruments, 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
[0005] While the specification concludes with claims which
particularly point out and distinctly claim the invention, it is
believed the present invention 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:
[0006] FIG. 1 depicts perspective view of an exemplary surgical
instrument;
[0007] FIG. 2 depicts a partial side cross sectional view of an
exemplary alternative version of an surgical instrument;
[0008] FIG. 3 depicts a partial side cross sectional view of
another exemplary alternative version of an surgical instrument
having a battery door; and
[0009] FIG. 4 depicts a diagrammatic view of a graph showing
coordinated power delivery used by the surgical instrument of FIG.
2.
[0010] The drawings are not intended to be limiting in any way, and
it is contemplated that various embodiments of the invention 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 invention, and together with the
description serve to explain the principles of the invention; it
being understood, however, that this invention is not limited to
the precise arrangements shown.
DETAILED DESCRIPTION
[0011] The following description of certain examples of the
invention should not be used to limit the scope of the present
invention. Other examples, features, aspects, embodiments, and
advantages of the invention 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 invention. As will be realized, the invention is capable of
other different and obvious aspects, all without departing from the
invention. Accordingly, the drawings and descriptions should be
regarded as illustrative in nature and not restrictive.
[0012] It will be appreciated that the terms "proximal" and
"distal" are used herein with reference to a clinician gripping a
handpiece assembly. Thus, an end effector is distal with respect to
the more proximal handpiece assembly. It will be further
appreciated that, for convenience and clarity, spatial terms such
as "top" and "bottom" also are used herein with respect to the
clinician gripping the handpiece assembly. However, surgical
instruments are used in many orientations and positions, and these
terms are not intended to be limiting and absolute.
[0013] Various examples described herein are directed to improved
ultrasonic surgical instruments configured for effecting tissue
dissecting, cutting, and/or coagulation during surgical procedures.
For example, the teachings herein may be readily combined with
various teachings from any of the following, in numerous ways, as
will be apparent to those of ordinary skill in the art: U.S. Pat.
No. 7,738,971 entitled "Post-Sterilization Programming of Surgical
Instruments," issued Jun. 15, 2010, the disclosure of which is
incorporated by reference herein; U.S. Pub. No. 2006/0079874
entitled "Tissue 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. Pat. Pub. No. 2009/0143797, entitled "Cordless
Hand-held Ultrasonic Cautery Cutting Device," published Jun. 4,
2009, the disclosure of which is incorporated by reference herein;
U.S. Pub. No. 2009/0209990 entitled "Motorized Surgical Cutting and
Fastening Instrument Having Handle Based Power Source," published
Aug. 20, 2009, the disclosure of which is incorporated by reference
herein; 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; and U.S. Pub. No.
2011/0015660, entitled "Rotating Transducer Mount for Ultrasonic
Surgical Instruments," published Jan. 20, 2011, the disclosure of
which is incorporated by reference herein. Similarly, various ways
in which medical devices may be adapted to include a portable power
source are disclosed in U.S. Provisional Application Ser. No.
61/410,603, filed Nov. 5, 2010, entitled "Energy-Based Surgical
Instruments," the disclosure of which is incorporated by reference
herein.
[0014] As will become apparent from the following description, it
is contemplated that versions of the surgical instrument described
herein may be used in association with an oscillator module of a
surgical system, whereby ultrasonic energy from the oscillator
module provides the desired ultrasonic actuation for the present
surgical instrument. It is also contemplated that versions of the
surgical instrument described herein may be used in association
with a signal generator module of a surgical system, whereby
electrical energy in the form of radio frequencies (RF), for
example, is used to provide feedback to the user regarding the
surgical instrument. The ultrasonic oscillator and/or the signal
generator modules may be non-detachably integrated with the
surgical instrument or may be provided as separate components,
which can be electrically attachable to the surgical
instrument.
[0015] It should also be understood that the teachings herein may
be readily applied to various types of electrosurgical instruments,
including but not limited to those taught in U.S. Pat. No.
6,500,176 entitled "Electrosurgical Systems and Techniques for
Sealing Tissue," issued Dec. 31, 2002, the disclosure of which is
incorporated by reference herein; U.S. Pat. No. 7,112,201 entitled
"Electrosurgical Instrument and Method of Use," issued Sep. 26,
2006, the disclosure of which is incorporated by reference herein;
U.S. Pat. No. 7,125,409, entitled "Electrosurgical Working End for
Controlled Energy Delivery," issued Oct. 24, 2006, the disclosure
of which is incorporated by reference herein; U.S. Pat. No.
7,169,146 entitled "Electrosurgical Probe and Method of Use,"
issued Jan. 30, 2007, the disclosure of which is incorporated by
reference herein; U.S. Pat. No. 7,186,253, entitled
"Electrosurgical Jaw Structure for Controlled Energy Delivery,"
issued Mar. 6, 2007, the disclosure of which is incorporated by
reference herein; U.S. Pat. No. 7,189,233, entitled
"Electrosurgical Instrument," issued Mar. 13, 2007, the disclosure
of which is incorporated by reference herein; U.S. Pat. No.
7,220,951, entitled "Surgical Sealing Surfaces and Methods of Use,"
issued May 22, 2007, the disclosure of which is incorporated by
reference herein; U.S. Pat. No. 7,309,849, entitled "Polymer
Compositions Exhibiting a PTC Property and Methods of Fabrication,"
issued Dec. 18, 2007, the disclosure of which is incorporated by
reference herein; U.S. Pat. No. 7,311,709, entitled
"Electrosurgical Instrument and Method of Use," issued Dec. 25,
2007, the disclosure of which is incorporated by reference herein;
U.S. Pat. No. 7,354,440, entitled "Electrosurgical Instrument and
Method of Use," issued Apr. 8, 2008, the disclosure of which is
incorporated by reference herein; U.S. Pat. No. 7,381,209, entitled
"Electrosurgical Instrument," issued Jun. 3, 2008, the disclosure
of which is incorporated by reference herein; U.S. Pub. No.
2011/0087218, entitled "Surgical Instrument Comprising First and
Second Drive Systems Actuatable by a Common Trigger Mechanism,"
published Apr. 14, 2011, the disclosure of which is incorporated by
reference herein; and U.S. patent application Ser. No. 13/151,181,
entitled "Motor Driven Electrosurgical Device with Mechanical and
Electrical Feedback," filed Jun. 2, 2011, the disclosure of which
is incorporated by reference herein.
[0016] Furthermore, the teachings herein may be readily applied to
various types of electrically powered cutting and stapling
instruments, including but not limited to those taught in U.S. Pat.
No. 7,416,101 entitled "Motor-Driven Surgical Cutting and Fastening
Instrument with Loading Force Feedback," issued Aug. 26, 2008, the
disclosure of which is incorporated by reference herein; U.S. Pub.
No. 2009/0209979, entitled "Motorized Cutting and Fastening
Instrument Having Control Circuit for Optimizing Battery Usage,"
published Aug. 20, 2009; and U.S. patent application Ser. No.
13/151,181, entitled "Motor Driven Electrosurgical Device with
Mechanical and Electrical Feedback," filed Jun. 2, 2011, the
disclosure of which is incorporated by reference herein. Still
other suitable types of devices to which the teachings herein may
be applied will be apparent to those of ordinary skill in the
art.
[0017] In view of the foregoing, it should be understood that the
surgical instrument is not limited in its application or use to the
details of construction and arrangement of parts illustrated in the
accompanying drawings and description. The illustrative versions of
the surgical instrument may be implemented or incorporated in other
versions, variations and modifications, and may be practiced or
carried out in various ways. Further, unless otherwise indicated,
the terms and expressions employed herein have been chosen for the
purpose of describing the illustrative versions of the present
surgical instrument for the convenience of the reader and are not
for the purpose of limiting the surgical instrument.
[0018] 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.
[0019] I. Exemplary Ultrasonic Instrument
[0020] The examples described herein relate to a battery powered
ultrasonic surgical clamp coagulator apparatus which is configured
for effecting tissue cutting, coagulation, and/or clamping during
surgical procedures. When ultrasonic components of the apparatus
are inactive, tissue can be readily gripped and manipulated, as
desired, without tissue cutting. When the ultrasonic components are
activated, the apparatus permits tissue to be gripped for coupling
with the ultrasonic energy to effect tissue coagulation, with
application of increased pressure efficiently effecting tissue
cutting and coagulation. If desired, ultrasonic energy can be
applied to tissue without use of the clamping mechanism of the
apparatus by appropriate manipulation of the ultrasonic blade.
[0021] FIG. 1 shows a version of a surgical instrument (10). The
surgical instrument (10) includes a battery connected to a control
module as will be discussed in further detail below. Surgical
instrument (10) further comprises an ultrasonic transducer (50). It
will be noted that, in some applications, ultrasonic transducer
(50) is referred to as a "hand piece assembly" because the surgical
instrument of surgical instrument (10) is configured such that a
surgeon may grasp and manipulate ultrasonic transducer (50) during
various procedures and operations. Of course, instrument (10) may
be configured for robotic manipulation in addition to or in lieu of
human operator manipulation. Ultrasonic transducer (50) may be a
disposable component, completely enclosed by instrument (10) and/or
it may be a reusable component that is detachable from instrument
(10). It will be appreciated that surgical instrument (10) may
comprise any suitable combination of disposable components and
reusable components.
[0022] Ultrasonic surgical instrument (10) further includes a
multi-piece handle assembly (68) adapted to isolate the operator
from the vibrations of the acoustic assembly contained within
transducer (50). Handle assembly (68) may be shaped to be held by a
user in a pistol-grip manner, but it is contemplated that
instrument (10) may be grasped and manipulated in any other
suitable manner as would be apparent to one of ordinary skill in
the art in view of the teachings herein. While multi-piece handle
assembly (68) is illustrated, handle assembly (68) may instead
comprise a single unitary piece. Ultrasonic transducer (50) may
also be attached to and removed from ultrasonic surgical instrument
(10) as a unit. Handle assembly (68) may be constructed from a
durable plastic, such as polycarbonate or a liquid crystal polymer.
It is also contemplated that handle assembly (68) may alternatively
be made from a variety of materials including other plastics,
ceramics or metals.
[0023] Surgical instrument (10) further comprises an outer sheath
(72) extending distally from handle assembly (68) leading to an end
effector (81), which comprises clamp member (60) and blade (79).
Clamp member (60) and blade (79) are operable to manipulate tissue
in various ways as described herein. Ultrasonic transducer (50) is
operable to deliver ultrasonic energy to end effector (81), which,
in the exemplary version, is communicated from transducer (50) to
end effector (81) through an acoustic waveguide (not shown)
extending through outer sheath (72).
[0024] The distal end of blade (79) is disposed near an 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 ultrasonic transducer (50) is energized, the distal
end of blade (79) is configured to move longitudinally in the range
of, for example, approximately 10 to 500 microns peak-to-peak, and
preferably in the range of about 20 to about 200 microns at a
predetermined vibrational frequency f.sub.o of, for example, 55,500
Hz. Thus, when tissue is secured between blade (79) and clamp arm
(84), the ultrasonic oscillation of blade (79) may simultaneously
sever tissue and denature the proteins in adjacent tissue cells,
thereby providing a coagulative effect with relatively little
thermal spread. An electrical current may also be provided through
blade (79) and clamp arm (84) to cauterize the tissue. While some
configurations for transducer (50) have been described, still other
suitable configurations for transducer (50) will be apparent to one
or ordinary skill in the art in view of the teachings herein.
[0025] A power supply is located inside the handle assembly (68)
for providing power to the device including transducer (50). The
power supply may include a primary battery, a rechargeable battery,
a supercapacitor, a fuel cell or a combination of these or other
means of supplying power. It should be understood that surgical
instrument (10) may be constructed in accordance with some or all
of the teachings of any of the references cited herein, including
those relating to ultrasonic surgical instruments, those relating
to RF electrosurgical instruments, or those relating to
electrically powered cutting and stapling instruments. As another
merely illustrative example, surgical instrument (10) may comprise
a variation of the instruments described in any of the following:
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. 5,938,633, entitled "Ultrasonic Surgical Devices,"
issued Aug. 17, 1999; U.S. Pat. No. 5,935,144, entitled "Double
Sealed Acoustic Isolation Members for Ultrasonic," issued Aug. 10,
1999; U.S. Pat. No. 5,944,737, entitled "Ultrasonic Clamp
Coagulator Apparatus Having Improved Waveguide Support Member,"
issued Aug. 31, 1999; U.S. Pat. No. 5,322,055, entitled "Clamp
Coagulator/Cutting System for Ultrasonic Surgical Instruments,"
issued Jun. 21, 1994; U.S. Pat. No. 5,630,420, entitled "Ultrasonic
Instrument for Surgical Applications," issued May 20, 1997; U.S.
Pat. No. 5,449,370, entitled "Blunt Tipped Ultrasonic Trocar,"
issued Sep. 12, 1995; U.S. Pat. No. D594,983, entitled "Handle
Assembly for Surgical Instrument," issued Jun. 23, 2009; and/or any
other reference cited herein. Still other suitable forms that
instrument (10) may take will be apparent to those of ordinary
skill in the art in view of the teachings herein.
[0026] II. Exemplary Device for Charging Power Source
[0027] It will be understood that in some energy based instruments,
it may be desirable to use a battery that is operable to provide a
relative high discharge rate such as, for example, a lithium
polymer battery or a super capacitor. However, it will be
appreciated that a higher capacity battery, rather than a higher
discharge rate battery, may be desirable as it can simply hold more
charge to power the energy based instrument. Examples described
herein relate to synergistic combinations of such batteries in a
surgical instrument.
[0028] FIG. 2 shows an exemplary surgical instrument (100) having a
grip portion (102) integrated with a body assembly (120). Surgical
instrument (100) may be constructed and operable in accordance with
at least some of the teachings above and/or teachings of the
various references cited herein. A trigger (104) is pivotally
coupled with a grip portion (102). A hub (108) is coupled to a
distal portion of body assembly (120). A shaft (106) extends
distally from hub (108). An end effector, such as end effector (81)
of FIG. 1, is positioned at the distal end of shaft (106).
[0029] Grip portion (102) is shaped to be held and/or grasped by a
single hand of the user. While grasping grip portion (102), the
user may also be able to position his/her hand to actuate trigger
(104) to use surgical instrument (100). The present example shows
grip portion (102) having an elongated, rounded shape, but any
suitable shape for grip portion (102) may be used as would be
apparent to one of ordinary skill in the art in view of the
teachings herein. Grip portion (102) defines an internal battery
cavity (122). Battery cavity (122) has a shape and size to hold a
power source, such as a storage battery (110), therein. Handle
walls (124) surrounding battery cavity (122) are thick enough such
that heat given off by storage battery (110) may be absorbed or
otherwise insulated from the user's hands by handle walls (124) as
storage battery (110) transfers charge to a discharge battery
(112), as will be described in further detail below.
[0030] Surgical instrument (100) further comprises a switch (114)
in communication with grip portion (102). Switch (114) is
positioned proximate to grip portion (102) such that the user is
able actuate switch (114) with the same hand grasping grip portion
(102). Additionally, switch (114) may be positioned such that the
user can actuate switch (114) and trigger (104) without
repositioning his/her hands. In the present example, switch (114)
comprises a sliding switch. However, switch (114) may comprise any
suitable component operable to be actuated by the user as would be
apparent to one of ordinary skill in the art in view of the
teachings herein. For example, switch (114) may comprise a button
or toggle lever operable to be actuated by a user.
[0031] Switch (114) is in communication with control module (126).
Control module (126) is also in communication with discharge
battery (112) and storage battery (110). Control module (126) is
operable to selectively control the flow of current from storage
battery (110) to discharge battery (112) such that storage battery
(110) may be used to provide power to discharge battery (112) to
increase the available charge of discharge battery (112).
[0032] Storage battery (110) of the present example is operable to
provide a significant amount of charge for use with surgical
instrument (100). However, in order to properly drive the end
effector, surgical instrument (100) may have peak power
requirements exceeding the capabilities of storage battery (110).
Surgical instrument (100) may thus utilize power drawn from
discharge battery (112) rather than from storage battery (110) in
order to drive the end effector. Discharge battery (112) is
operable to deliver a high rate of energy for use by surgical
instrument (100). Discharge battery (112) is operable to deliver
power directly to end effector (81), or in other exemplary
versions, discharge battery may be operable to deliver power to end
effector (81) through control module (126).
[0033] In the present example, discharge battery (112) may be
operable to deliver power to a transducer in communication with end
effector (81). Furthermore, while the current example contemplates
delivering ultrasonic energy with end effector (81), it will be
appreciated that end effector (81) may also be operable to deliver
RF energy and/or perform other functions. Discharge battery (112)
may comprise, for example, a lithium polymer battery, or any other
suitable battery type as would be apparent to one of ordinary skill
in the art in view of the teachings herein. In some other exemplary
versions, discharge battery (112) comprises a nickel-cadmium
battery, a super capacitor, a fuel cell, or any combination
thereof. In the event that discharge battery (112) comprises a
super capacitor, it will be understood that the super capacitor may
initially have a discharged state where thereafter the super
capacitor is charged prior to use. Furthermore, discharge battery
(112) may comprise a rechargeable battery such that discharge
battery (112) may be recharged by storage battery (110) or any
other suitable power source such that thereafter discharge battery
(112) may again be used to power surgical instrument (100).
[0034] Through use of control module (126), switch (114) is
operable by the user to cause charge to flow from storage battery
(110) to discharge battery (112), thereby sufficiently charging
discharge battery (112) for operation of the end effector. Body
assembly (120) further comprises at least one visual indicator
(128) operable to inform the user of the charge status of discharge
battery (112). The present example shows a single visual indicator
(128), but any suitable number visual indicators (128) may be used.
In some versions, a single visual indicator (128) has different
states, such as different colors or brightness levels, to
communicate to the user the charge status of discharge battery
(112). Visual indicator (128) may comprise an LED, an LCD screen,
or any other suitable visual aid as would be apparent to one of
ordinary skill in the art in view of the teachings herein.
[0035] For example, if discharge battery (112) has a charge level
that drops below 50%, visual indicator (128) may signal to the user
that discharge battery (112) level is below 50%. The user may then
actuate switch (114), which causes control module (126) to direct
flow of charge from storage battery (110) to discharge battery
(112). As discharge battery (112) charges, control module (126) is
operable to determine the charge level of discharge battery (112).
Visual indicator (128) may provide real time feedback to the user
to indicate the charge status of discharge battery (112). Once
charging is complete, visual indicator (128) informs the user that
discharge battery (112) is completely charged. In some exemplary
versions, control module (126) may be operable to automatically
stop delivery of charge from storage battery (110) to discharge
battery (112) once discharge battery (112) is fully charged. In
other exemplary versions, the user may actuate switch (114) to stop
the recharging of discharge battery (112) and monitor the charge
level in real time. In some other exemplary versions, storage
battery (110) is operable to provide continuous recharge for
discharge battery (112) (e.g., such that switch (114) is omitted).
Other suitable charging patterns may be used as would be apparent
to one of ordinary skill in the art in view of the teachings
herein.
[0036] Body assembly (120) and grip assembly (102) fully enclose
storage battery (110) and discharge battery (112) in the present
example. Thus, once surgical instrument (100) is shipped in a
package, it will be further understood that surgical instrument
(100) is ready for use since storage battery (110) and discharge
battery (112) are already contained within surgical instrument
(100). Storage battery (110) may already be fully charged, and in
some instances discharge battery (112) may also be fully charged
before instrument (100) is removed from the package. Once removed
from a package or other suitable container, surgical instrument
(100) may be used within approximately five minutes or any other
suitable time period. In addition or in the alternative, surgical
instrument (100) may be removed from a package and stored for a
period of time prior to use. Prior to use of surgical instrument
(100), it will be appreciated that since discharge battery (112)
and storage battery (110) are contained within surgical instrument
(100), surgical instrument (100) may be sterilized using an
ethylene oxide sterilization method and/or any other suitable
sterilization method as would be apparent to one of ordinary skill
in the art in view of the teachings herein.
[0037] FIG. 3 shows an exemplary surgical instrument (200) having
grip portion (202) integrated with body assembly (220). Grip
portion (202) includes a pivoting trigger (204). A hub (208) is
connected to a distal portion of body assembly (220). A shaft (206)
extends distally from hub (208). An end effector (not shown) is
positioned at the distal end of shaft (206). Surgical instrument
(200) of this example is substantially similar to surgical
instrument (100) of FIG. 1, with the exception that grip portion
(202) comprises a battery door (230) pivotally coupled with
surgical instrument (200) by a hinge (232). While the present
example shows hinge (232) connecting battery door (230) to grip
portion (202), it will be appreciated that any suitable connection
feature may be used as would be apparent to one of ordinary skill
in the art in view of the teachings herein. For example, a screw-on
or snap-fit cap may be used instead of battery door (230). When
battery door (230) is closed, battery door (230) is operable to
form a hermetic seal or any other suitable level of sealing with
grip portion (202). Thus, it will be understood that storage
battery (210) used with surgical instrument (200) for charging
discharge battery (212) may be replaced when storage battery (210)
has been depleted. In some other versions, it will be appreciated
that storage battery (210) may be shipped disconnected from
surgical instrument (200) where the user may then insert storage
battery (210) into grip portion (202) when surgical instrument
(200) is ready for use.
[0038] Surgical instrument (200) also comprises control module
(226). In the present example, control module (226) is operable to
coordinate delivery of power and charging as depicted by chart
(350) of FIG. 4. In some exemplary versions, control module (226)
may be integrally formed with surgical instrument (200) or in the
alternative, control module (226) may be detachable. Storage
battery (210) may be operable to deliver power to power surgical
instrument (200) directly rather than through discharge battery
(212). In such a configuration, discharge battery (212) may
comprise a super capacitor operable to supplement the power
delivery of storage battery (210). It will be understood that the
power drawn from surgical instrument (200) may not necessarily be
constant. As a result, storage battery (210) is operable to satisfy
most of the power needs of surgical instrument (200). In the event
that the power requirements of surgical instrument (200) fall below
a level of what storage battery (210) is able to provide, control
module (226) directs the excess charge to charge the super
capacitor. In the event that the power needs of surgical instrument
(200) exceed a level of power that storage battery (210) can
deliver, then the super capacitor may be directed by control module
(226) to supplement the additional needed power. In the event that
storage battery (210) provides the appropriate amount of power for
surgical instrument (200), then it will be appreciated that the
super capacitor will neither be charging nor discharging. An
example of the relative power amounts of storage battery (210),
power required by surgical instrument (200), and power in a super
capacitor are shown in FIG. 4 using a storage battery line (300), a
power requirement line (302), and a capacitor line (304),
respectively, where the horizontal axis represents time, which may
be indicated using any suitable unit of time and the vertical axis
represents charge state, which may be indicated using any suitable
unit of charge.
[0039] In FIG. 4, which demonstrates a merely exemplary charge
state sequence, stage 1 (310) shows a state where surgical
instrument (200) does not require any power. As a result, storage
battery (210) may continuously charge discharge battery (212). At
stage 2 (312), surgical instrument (200) requires some amount of
power (e.g., when surgical instrument (200) is powered on, etc.).
Storage battery (210) switches to supply power to surgical
instrument (200) and discharge battery (212) remains charged. Since
at stage 2 (312), storage battery (210) is being used to provide
power to surgical instrument (200), charging of discharge battery
(212) has halted. It should be understood, however, that storage
battery (210) may simultaneously provide power to surgical
instrument (200) and charge discharge battery (212) in some
instances. At stage 3 (314), the power requirement of surgical
instrument (200) spikes (e.g., in response to actuation of trigger
(204), etc.) and both discharge battery (212) and storage battery
(210) must be used to supply sufficient power to surgical
instrument (200). Thereafter at stage 4 (316), the power required
by surgical instrument (200) drops significantly and therefore,
discharge battery (212) may be recharged again using storage
battery (210). Finally, at stage 5 (318), the power needs of
surgical instrument (200) rise again and storage battery (210) is
used to provide power to surgical instrument (200) and discharge
battery (212) is no longer charged by storage battery (210). While
FIG. 4 shows merely one exemplary charging sequence relationship
between discharge battery (212), storage battery (210) and surgical
instrument (200), it will be appreciated that other sequences may
be used as would be apparent to one of ordinary skill in the art in
view of the teachings herein. It will be appreciated that the
above-described sequence for charging discharge battery (212)
and/or storage battery (210) may be controlled wholly or in part by
control module (126, 226) described above. In some alternative
versions, it will be appreciated that a separate module (not shown)
may be used to control the charging of discharge battery (212) and
storage battery (210).
[0040] 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.
[0041] Embodiments of the present invention have application in
conventional endoscopic and open surgical instrumentation as well
as application in robotic-assisted surgery. For instance, those of
ordinary skill in the art will recognize that various teaching
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.
[0042] Embodiments of the devices disclosed herein can be designed
to be disposed of after a single use, or they can be designed to be
used multiple times. Embodiments 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, embodiments 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,
embodiments of the device may be reassembled for subsequent use
either at a reconditioning facility, or by a surgical team
immediately prior to a surgical 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.
[0043] By way of example only, embodiments described herein may be
processed before surgery. First, a new or used instrument may be
obtained and if necessary cleaned. The instrument may then be
sterilized. In one sterilization technique, the instrument is
placed in a closed and sealed container, such as a plastic or TYVEK
bag. The container and instrument 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 instrument and in the container. The sterilized
instrument may then be stored in the sterile container. The sealed
container may keep the instrument sterile until it is opened in a
medical facility. 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.
[0044] 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.
* * * * *