U.S. patent application number 17/671702 was filed with the patent office on 2022-06-02 for actuation mechanisms for tissue specimen retrieval devices and tissue specimen retrieval devices incorporating the same.
The applicant listed for this patent is Covidien LP. Invention is credited to Saumya Banerjee, Jacob C. Baril.
Application Number | 20220168004 17/671702 |
Document ID | / |
Family ID | 1000006138004 |
Filed Date | 2022-06-02 |
United States Patent
Application |
20220168004 |
Kind Code |
A1 |
Baril; Jacob C. ; et
al. |
June 2, 2022 |
ACTUATION MECHANISMS FOR TISSUE SPECIMEN RETRIEVAL DEVICES AND
TISSUE SPECIMEN RETRIEVAL DEVICES INCORPORATING THE SAME
Abstract
A tissue specimen retrieval device includes an outer shaft
including a proximal portion and a distal portion. The distal
portion of the outer shaft includes a first jaw defining a first
side of a lumen in the distal portion of the outer shaft. A second
jaw defines a second side of the lumen in the distal portion of the
outer shaft. The first and second jaws are actuatable between a
closed configuration and an expanded configuration in which the
first and second jaws are spaced relative to each other. A tissue
specimen bag is supported by the first jaw and the second jaw. A
bag brim of the tissue specimen bag defines a collapsed
configuration when positioned in the lumen defined by the first jaw
and the second jaw and an open configuration when the first and
second jaws are in the expanded configuration.
Inventors: |
Baril; Jacob C.; (Norwalk,
CT) ; Banerjee; Saumya; (Hamden, CT) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Covidien LP |
Mansfield |
MA |
US |
|
|
Family ID: |
1000006138004 |
Appl. No.: |
17/671702 |
Filed: |
February 15, 2022 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
16875031 |
May 15, 2020 |
11246613 |
|
|
17671702 |
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Current U.S.
Class: |
1/1 |
Current CPC
Class: |
A61B 17/2909 20130101;
A61B 17/221 20130101; A61B 2017/2212 20130101; A61B 2017/2925
20130101 |
International
Class: |
A61B 17/221 20060101
A61B017/221; A61B 17/29 20060101 A61B017/29 |
Claims
1-20. (canceled)
21. A tissue specimen retrieval device comprising: a housing; an
outer shaft extending distally from the housing and having a distal
portion, the distal portion supporting an end effector comprising:
a first jaw coupled pivotably to the distal portion of the outer
shaft; and a second jaw coupled pivotably to the distal portion of
the outer shaft, the first and second jaws being actuatable between
a closed configuration and an expanded configuration in which the
first and second jaws are spaced relative to each other; and a
tissue specimen bag supported by the first jaw and the second jaw,
the tissue specimen bag having a bag brim, the bag brim coupled to
the first jaw and the second jaw, wherein the bag brim defines a
collapsed configuration when the first jaw and the second jaw are
in the closed configuration and an open configuration when the
first and second jaws are in the expanded configuration.
22. The tissue specimen retrieval device of claim 21, wherein the
first jaw defines a first pivot point and a second pivot point and
the second jaw defines a third pivot point and a fourth pivot
point, and wherein actuation of the first jaw and the second jaw
from the closed configuration to the expanded configuration pivots
the first jaw about the first and second pivot points and pivots
the second jaw about the third and fourth pivot points to expand
the bag brim from the closed configuration to the open
configuration.
23. The tissue specimen retrieval device of claim 22, wherein the
tissue specimen bag further comprises a bag body, the bag body
being configured in a furled configuration when the first and
second jaws are in the closed configuration, and being configured
in an unfurled configuration when the first and second jaws are in
the expanded configuration.
24. The tissue specimen retrieval device of claim 21, further
comprising a first suture coupling removably the bag brim to the
first and second jaws.
25. The tissue specimen retrieval device of claim 24, wherein the
bag brim comprises a channel defined therein and wherein a second
suture extends within the channel formed in the bag brim, the
second suture configured to cinch the bag brim into a closed
configuration.
26. The tissue specimen retrieval device of claim 25, further
comprising an actuator positioned on the housing, the actuator
operably coupled to the second suture and configured to retract the
second suture.
27. The tissue specimen retrieval device of claim 25, wherein the
first and second jaws each comprises a plurality of orifices
configured to receive the first suture therein to removably couple
the bag brim to the first and second jaws.
28. The tissue specimen retrieval device of claim 21, further
comprising: a first track formed in a proximal portion of the first
jaw; a second track formed in a proximal portion of the second jaw,
the first track overlapping the second track; and a pin positioned
in the first track and the second track, wherein advancing the pin
along a proximal-to-distal direction actuates the first and second
jaws between the closed configuration and the expanded
configuration.
29. The tissue specimen retrieval device of claim 28, further
comprising a driver coupled to the pin and configured to advance
the pin along the proximal-to-distal direction.
30. The tissue specimen retrieval device of claim 29, further
comprising an actuator positioned on the housing, the actuator
operably coupled to the driver and configured to advance the driver
along the proximal-to-distal direction.
31. The tissue specimen retrieval device of claim 21, wherein the
housing comprises a pistol-grip handle.
32. A tissue specimen retrieval device, comprising: an outer shaft
having a proximal portion and a distal portion, the outer shaft
supporting an end effector at the distal portion, the end effector
comprising: a first jaw coupled pivotably to the distal portion of
the outer shaft; a second jaw coupled pivotably to the distal
portion of the outer shaft, the first and second jaws being
actuatable between a closed configuration and an expanded
configuration in which the first and second jaws are spaced
relative to each other; and a tissue specimen bag supported by the
first jaw and the second jaw, the tissue specimen bag having a bag
brim, the bag brim coupled to the first jaw and the second jaw,
wherein the bag brim defines a collapsed configuration when the
first jaw and the second jaw are in the closed configuration and an
open configuration when the first and second jaws are in the
expanded configuration.
33. The tissue specimen retrieval device of claim 32, wherein the
first jaw defines a first pivot point and a second pivot point and
the second jaw defines a third pivot point and a fourth pivot
point, and wherein actuation of the first jaw and the second jaw
from the closed configuration to the expanded configuration pivots
the first jaw about the first and second pivot points and pivots
the second jaw about the third and fourth pivot points to expand
the bag brim from the closed configuration to the open
configuration.
34. The tissue specimen retrieval device of claim 33, wherein the
tissue specimen bag further comprises a bag body, the bag body
being configured in a furled configuration when the first and
second jaws are in the closed configuration, and being configured
in an unfurled configuration when the first and second jaws are in
the expanded configuration.
35. The tissue specimen retrieval device of claim 32, further
comprising a first suture coupling removably the bag brim to the
first and second jaws.
36. The tissue specimen retrieval device of claim 35, wherein the
bag brim comprises a channel defined therein and wherein a second
suture extends within the channel formed in the bag brim, the
second suture configured to cinch the bag brim into a closed
configuration.
37. The tissue specimen retrieval device of claim 36, wherein the
second suture extends through a lumen in the proximal portion of
the outer shaft, and wherein the second suture is connected with an
actuator.
38. The tissue specimen retrieval device of claim 36, wherein the
first and second jaws each comprises a plurality of orifices
configured to receive the first suture therein to couple removably
the bag brim to the first and second jaws.
39. The tissue specimen retrieval device of claim 33, further
comprising: a first track formed in a proximal portion of the first
jaw; a second track formed in a proximal portion of the second jaw,
the first track overlapping the second track; and a pin positioned
in the first track and the second track, wherein advancing the pin
along a proximal to distal direction actuates the first and second
jaws between the closed configuration and the expanded
configuration.
40. The tissue specimen retrieval device of claim 39, further
comprising a driver coupled to the pin and configured to advance
the pin along the proximal to distal direction.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] The present application is a continuation application of
U.S. patent application Ser. No. 16/875,031 filed May 15, 2020. The
entire contents of which are incorporated herein by reference.
FIELD
[0002] The present disclosure relates to tissue specimen retrieval
from an internal body cavity and, more particularly, to
articulation mechanisms for tissue specimen retrieval devices and
tissue specimen retrieval devices incorporating the same to
facilitate retrieval of a tissue specimen from the internal body
cavity.
BACKGROUND
[0003] In minimally-invasive surgical procedures, operations are
carried out within an internal body cavity through small entrance
openings in the body. The entrance openings may be natural
passageways of the body or may be surgically created, for example,
by making a small incision into which a cannula is inserted.
[0004] Minimally-invasive surgical procedures may be used for
partial or total retrieval of a tissue specimen from an internal
body cavity. However, the restricted access provided by
minimally-invasive openings (natural passageways and/or surgically
created openings) presents challenges with respect to
maneuverability and visualization. The restricted access also
presents challenges when the tissue specimen is required to be
removed. As such, a tissue specimen that is deemed too large for
intact retrieval may be broken down into a plurality of smaller
pieces to facilitate retrieval from the internal body cavity.
[0005] During such minimally-invasive surgical procedures, it is
common that a cyst, tumor, or other affected tissue specimen is
required to be removed. In these and other procedures where
cancerous tissue is required to be removed, retrieval of the tissue
specimen in an enclosed environment is highly desirable to inhibit
seeding of cancer cells. Thus, with respect to breaking down large
tissue specimens for retrieval through minimally-invasive openings,
there is the added challenge of doing so within an enclosed
environment.
SUMMARY
[0006] Provided in accordance with aspects of the present
disclosure is a tissue specimen retrieval device including a
housing and an outer shaft extending distally from the housing. The
outer shaft includes a proximal portion and a distal portion. The
outer shaft defines a lumen extending within the proximal portion
and the distal portion of the outer shaft. The distal portion of
the outer shaft includes a first jaw defining a first side of the
lumen in the distal portion of the outer shaft. A second jaw
defines a second side of the lumen in the distal portion of the
outer shaft. The first and second jaws are actuatable between a
closed configuration in which the first and second jaws define the
lumen in the distal portion of the outer shaft, and an expanded
configuration in which the first and second jaws are spaced
relative to each other. A tissue specimen bag is supported by the
first jaw and the second jaw. The tissue specimen bag includes a
bag brim. The bag brim is removably coupled to the first jaw and
the second jaw. The bag brim defines a collapsed configuration when
positioned in the lumen defined by the first jaw and the second jaw
and an open configuration when the first and second jaws are in the
expanded configuration.
[0007] In an aspect of the present disclosure, the first jaw
includes a first pivot point and a second pivot point and the
second jaw defines a third pivot point and a fourth pivot point.
Actuation of the first jaw and the second jaw between the closed
configuration and the expanded configuration pivots the first jaw
about the first and second pivot points and pivots the second jaw
about the third and fourth pivot points to expand the bag brim
between the closed configuration and the open configuration. The
tissue specimen bag includes a bag body. The bag body is in a
furled configuration when the first and second jaws are in the
closed configuration. The bag body is in an unfurled configuration
when the bag brim is in the open configuration.
[0008] In an aspect of the present disclosure, a first suture
removably couples the bag brim to the first and second jaws. The
bag brim includes a channel defined therein. A second suture
extends within the channel formed in the bag brim. The second
suture is configured to cinch the bag brim into a closed
configuration. An actuator is positioned on the housing. The
actuator is operably coupled to the second suture and configured to
retract the second suture. The first and second jaws each include a
plurality of orifices configured to receive the first suture
therein to removably couple the bag brim to the first and second
jaws.
[0009] In an aspect of the present disclosure, a first track is
formed in a proximal portion of the first jaw. A second track is
formed in a proximal portion of the second jaw. The first track
overlaps the second track. A pin is positioned in the first track
and the second track. Advancing the pin along a proximal to distal
direction actuates the first and second jaws between the closed
configuration and the expanded configuration. A driver is operably
coupled to the pin and configured to advance the pin along the
proximal to distal direction. An actuator is positioned on the
housing. The actuator is operably coupled to the driver and
configured to advance the driver along the proximal to distal
direction.
[0010] In an aspect of the present disclosure, the housing includes
a pistol-grip handle.
BRIEF DESCRIPTION OF THE DRAWINGS
[0011] The accompanying drawings, which are incorporated in and
constitute a part of this specification, illustrate aspects and
features of the disclosure and, together with the detailed
description below, serve to further explain the disclosure, in
which:
[0012] FIG. 1 is a side, perspective view of a tissue specimen
retrieval device provided in accordance with aspects of the present
disclosure, wherein the jaws of the tissue specimen retrieval
device are in a closed configuration;
[0013] FIG. 2A is a top, plan view of the jaws of FIG. 1 in the
closed configuration;
[0014] FIG. 2B is a top, plan view of the jaws of FIG. 1 in an
expanded configuration and a tissue specimen bag in an open
configuration;
[0015] FIG. 3 is an enlarged, top, plan view of area "A" of FIG.
2B;
[0016] FIG. 4A is a top, plan view of an actuation mechanism of the
jaws of FIG. 1 with the jaws in the closed configuration;
[0017] FIG. 4B is a top, plan view of the actuation mechanism of
FIG. 4A with the jaws in the expanded configuration; and
[0018] FIG. 5 is a perspective view of the tissue specimen
retrieval device of FIG. 1 inserted through an access cannula into
an internal body cavity for retrieval of a tissue specimen
therefrom.
DETAILED DESCRIPTION
[0019] The present disclosure provides actuation mechanisms for
tissue specimen retrieval devices and tissue specimen retrieval
devices incorporating the same to facilitate retrieval of the
tissue specimen from the internal body cavity. These and other
aspects and features of the present disclosure are detailed below.
As used herein, the term "distal" refers to the portion that is
described which is further from a user, while the term "proximal"
refers to the portion that is being described which is closer to a
user. Further, any or all of the aspects and features described
herein, to the extent consistent, may be used in conjunction with
any or all of the other aspects and features described herein.
[0020] "About" or "approximately" or "substantially" as used herein
may be inclusive of the stated value and means within an acceptable
range of variation for the particular value as determined by one of
ordinary skill in the art, considering the measurement in question
and the error associated with measurement of the particular
quantity (e.g., the limitations of the measurement system). For
example, "about" may mean within one or more standard variations,
or within .+-.30%, 20%, 10%, 5% of the stated value.
[0021] Descriptions of technical features or aspects of an
exemplary embodiment of the disclosure should typically be
considered as available and applicable to other similar features or
aspects in another exemplary embodiment of the disclosure.
Accordingly, technical features described herein according to one
exemplary embodiment of the disclosure may be applicable to other
exemplary embodiments of the disclosure, and thus duplicative
descriptions may be omitted herein.
[0022] Exemplary embodiments of the disclosure will be described
more fully below (e.g., with reference to the accompanying
drawings). Like reference numerals may refer to like elements
throughout the specification and drawings.
[0023] Referring to FIG. 1, a tissue specimen retrieval device
provided in accordance with the present disclosure is shown
generally identified by reference numeral 100. Tissue specimen
retrieval device 100 includes a housing 110, first and second
actuators 120, 130 operably associated with housing 110, an outer
shaft 140 extending distally from housing 110, and an activation
button 150. The outer shaft 140 includes a proximal portion 111 and
a distal portion 113. The outer shaft 140 defines a lumen 115
extending within the proximal portion 111 and the distal portion
113 of the outer shaft 140.
[0024] Housing 110, although illustrated as defining a generally
tubular configuration, may define any suitable configuration to
facilitate grasping and manipulating tissue specimen retrieval
device 100 such as, for example, a pencil-grip configuration, a
pistol-grip configuration, etc., and may include any suitable
features to enhance ergonomics such as, for example, recesses,
protrusions, textured surfaces, finger rings, etc.
[0025] First actuator 120 is operably associated with housing 110
and is operably coupled to outer shaft 140 to enable selective
actuation of the distal portion 113 of the outer shaft 140.
[0026] The first actuator 120 may be configured as a sliding
actuator slidable along housing 110 (e.g., along longitudinal axis
X-X), or may define any other suitable configuration such as, for
example, a plunger actuator that is selectively manipulatable
relative to housing 110 along a longitudinal axis of housing 110, a
pivoting actuator pivotable relative to housing 110, etc.
[0027] Second actuator 130 is operably associated with housing 110
and coupled to a second suture 163 (see, e.g., FIGS. 2B and 3) to
enable selective cinching of a brim 165 of tissue specimen bag 160.
Second actuator 130 may be configured as a plunger actuator that is
selectively manipulatable relative to housing 110, or may define
any other suitable configuration such as, for example, a pivoting
actuator pivotable relative to housing 110, a sliding actuator
slidable along housing 110 (e.g., along longitudinal axis X-X),
etc.
[0028] Referring to FIGS. 1 and 2A to 4B, the distal portion 113 of
the outer shaft 140 includes a first jaw 101 defining a first side
116 of the lumen 115 in the distal portion 113 of the outer shaft
140. A second jaw 102 defines a second side 117 of the lumen 115 in
the distal portion 113 of the outer shaft 140. The first and second
jaws 101 and 102 are configured to be actuated between a closed
configuration (see, e.g., FIG. 2A) in which the first and second
jaws 101 and 102 define the lumen 115 in the distal portion 113 of
the outer shaft 140, and an expanded configuration (see, e.g., FIG.
2B) in which the first and second jaws 101 and 102 are pivoted away
from each other. A tissue specimen bag 160 is supported by the
first jaw and the second jaw 101 and 102, respectively, and is
positioned in the lumen 115 of the outer shaft 140 before the
tissue specimen bag 160 is deployed by the first and second jaws
101 and 102. The tissue specimen bag 160 includes the brim 165. The
brim 165 is removably coupled to the first jaw 101 and the second
jaw 102. The brim 165 defines a collapsed configuration when
positioned in the lumen 115 defined by the first jaw 101 and the
second jaw 102 and an open configuration (see, e.g., FIG. 2B) when
the first jaw 101 and the second jaw 102 are in the expanded
configuration. The bag body 167 is in a furled configuration when
the tissue specimen bag 160 is positioned in the lumen 115 of the
outer shaft 140 before the tissue specimen bag 160 is deployed by
the first and second jaws 101 and 102, respectively.
[0029] As an example, the proximal 111 and distal portions 113 of
the outer shaft 140 may define approximately a 15 mm continuous
tube when the distal portion 113 of the outer shaft 140 is in the
closed configuration (e.g., before the tissue specimen bag 160 is
deployed from the lumen 115 of the outer shaft 140).
[0030] The first jaw 101 includes a first pivot point 121 and a
second pivot point 123 and the second jaw 102 defines a third pivot
point 122 and a fourth pivot point 124. Actuation of the first jaw
101 and the second jaw 102 between the closed configuration and the
expanded configuration pivots the first jaw 101 about the first and
second pivot points 121 and 123 and pivots the second jaw 102 about
the third and fourth points 122 and 124 to expand the brim 165
between the closed configuration and the open configuration. The
tissue specimen bag 160 includes a bag body 167 (see, e.g., FIG.
5). As noted above, the bag body 167 is in a furled configuration
when the first jaw 101 and the second jaw 102 are in the closed
configuration. The bag body 167 unfurls from the brim 165 when the
brim 165 is in the open configuration as a result of the actuation
of jaws 101, 102.
[0031] Referring particularly to FIGS. 2B and 3, a first suture 161
removably couples the brim 165 to the jaws 101, 102. The brim 165
includes at least one channel 162 formed therein. A second suture
163 extends within the channel 162 formed in the brim 165. The
second suture 163 is configured to cinch the brim 165 into a closed
configuration. The first jaw 101 and the second jaw 102 each
include a plurality of orifices 168 configured to receive the first
suture 161 therein to removably couple the brim 165 to the jaws
101, 102.
[0032] Tissue specimen bag 160 may be formed from any suitable
bio-compatible material (or materials), e.g., ripstop nylon,
configured to retain a tissue specimen "T" (FIG. 5) therein. Tissue
specimen bag 160 defines at least one opening defined by brim 165,
e.g., at open end 166 thereof, and includes one or more channels
162, 164 formed within brim 165 about open end 166 thereof for
receipt of second suture 163, therein. The one or more channels
162, 164 may be separate or in communication with one another,
and/or may extend about only a portion of open end 166 of tissue
specimen bag 160 or about the entirety perimeter thereof. One or
more of the openings of tissue specimen bag 160, e.g., open end
166, may include a cinch cord (e.g., second suture 163 extending
through channels 162 and 164) disposed thereabout to enable
selective closure of the opening. Tissue specimen bag 160 may be
disengaged from jaws 101, 102 upon cinching closed open end 166 of
tissue specimen bag 160, and cutting or separating of the first
suture 161, using a separate instrument, e.g., grasping device,
cutting device, and/or in any other suitable manner.
[0033] Referring particularly to FIGS. 1, 4A and 4B, a first track
131 is formed in a proximal end portion 114 of the first jaw 101. A
second track 132 is formed in a proximal end portion 124 of the
second jaw 102. The first track 131 overlaps the second track 132.
A pin 133 is positioned in the first track 131 and the second track
132. Advancing the pin 133 along a proximal-to-distal direction
(e.g., along longitudinal axis X-X in FIG. 1) actuates the jaws
101, 102 between the closed configuration and the expanded
configuration. A driver 134 is operably coupled to the pin 133 and
configured to advance the pin 133 along the proximal to distal
direction. The first actuator 120 actuator is operably coupled to
the driver 134 and configured to advance the driver 134 along the
proximal to distal direction. The pin 133 may be locked in place
but remain biased (e.g., by a spring) toward an actuated position,
such the releasing the pin 133 causes actuation of the jaws
101,102. The pin 133 may be released by an activation button 150 to
actuate the jaws 101,102.
[0034] Continuing with reference to FIGS. 1 and 5, outer shaft 140
extends distally from housing 110, as noted above, and is
configured for insertion through an access cannula "C" (FIG. 5) or
natural passageway into an internal body cavity "B" (FIG. 5). Outer
shaft 140 may be substantially rigid (within manufacturing
tolerances and in response to reasonable loads applied thereto) or
may include one or more portions configured to flex and/or
articulate relative to a longitudinal axis thereof.
[0035] In use, the distal portion 113 of the outer shaft 140 is
initially in the closed configuration to facilitate insertion of
the distal portion 113 of the outer shaft 140 through an access
cannula "C" (FIG. 5) or natural passageway into an internal body
cavity "B" (FIG. 5). Once at least the distal portion 113 of the
outer shaft 140 of tissue specimen retrieval device 100 is disposed
within the internal body cavity "B" (FIG. 5), the jaws 101, 102 are
actuated to the expanded configuration (see, e.g., FIGS. 2B and 4B)
to expand the brim 165 to the open configuration (see, e.g., FIG.
2B). Thus, the distal portion 113 of the outer shaft 140 is used to
deploy the tissue specimen bag 160 from the lumen 115 of the outer
shaft 140 into the open configuration without the need for
additional deployment arms. After a tissue specimen is placed in
the tissue specimen bag 160, the first suture 161 can be cut to
separate the brim 165 from the jaws 101,102. The brim 165 may be
cinched by proximally pulling the second suture 165 (e.g., by
pulling on second actuator 130) to close the open end 166 of the
brim 165.
[0036] From the foregoing and with reference to the various
drawings, those skilled in the art will appreciate that certain
modifications can be made to the present disclosure without
departing from the scope of the same. While several embodiments of
the disclosure have been shown in the drawings, it is not intended
that the disclosure be limited thereto, as it is intended that the
disclosure be as broad in scope as the art will allow and that the
specification be read likewise. Therefore, the above description
should not be construed as limiting, but merely as exemplifications
of particular embodiments. Those skilled in the art will envision
other modifications within the scope and spirit of the claims
appended hereto.
* * * * *