JP2023537459A - curved surgical stapling device - Google Patents

Abstract

The surgical stapling device (10) includes a frame (28), a jaw (31) coupled to the frame (28), and an end effector (16) including an anvil assembly (22) and a cartridge assembly (20). a clamp slide assembly (30). The jaw (31) has a lateral portion (46) that supports the anvil assembly (22) and is received within the cartridge assembly (20) when the cartridge assembly (20) is supported on the clamp slide assembly (30). a longitudinal portion (48) including a guide member (68).

Description

TECHNICAL FIELD The present technology relates generally to surgical stapling devices, and more particularly to surgical stapling devices with curved end effectors.

Surgical stapling devices for applying rows of staples through compressed living tissue are known in the art and are used for tissue or organ closure prior to cutting or excision of the tissue or organ. It is commonly used for organ occlusion during thoracic or abdominal procedures. In general, stapling devices include end effectors that can have various configurations, including straight, curved, and circular. The end effector can also have a variety of different orientations with respect to the longitudinal axis of the stapling device, including aligned or transverse directions.

In lateral-type stapling devices with curved end effectors, the end effector includes an anvil assembly fixed to the frame of the stapling device and a cartridge assembly supported on the clamp slide assembly of the stapling device. A clamp slide assembly is movable within the frame of the stapling device to move the cartridge assembly along the frame toward the anvil assembly from the open position to the clamped position.

Aspects of the present disclosure generally relate to a surgical stapling device that includes a frame assembly, jaws, clamp slide assembly, anvil assembly, and cartridge assembly. The frame assembly defines a channel and includes proximal and distal portions. The distal portion includes a lateral portion and a longitudinal portion. The jaw includes a lateral portion and a longitudinal portion. The longitudinal portion of the jaw is secured within the channel at the longitudinal portion of the frame assembly. A lateral portion of the jaw includes a guide member positioned within and extending from the channel of the frame assembly. A clamp slide assembly is positioned within the channel of the frame assembly and is movable between a retracted position and an advanced position. The clamp slide assembly includes a distal portion defining a support. An anvil assembly is supported on the jaws and includes a staple forming surface. A cartridge assembly is supported by the support of the clamp slide assembly and includes a body and a knife blade. The cartridge assembly is movable with the clamp slide from a first position spaced from the anvil assembly to a second position in juxtaposed alignment with the anvil assembly. A guide member is received within the body of the cartridge assembly and has a first guide surface for engaging the cartridge body and the knife blade for guiding movement of the cartridge assembly between the spaced-apart position and the clamped position. and a mating second guide surface.

In aspects of the present disclosure, the guide member has a stepped configuration and includes a step on which the first guide surface is formed.

In some aspects of the disclosure, the second guide surface includes a horizontal surface and a vertical surface.

In certain aspects of the present disclosure, a frame assembly includes a first frame member and a second frame member secured together in a spaced apart relationship by rivets to define a channel.

In aspects of the present disclosure, the distal portion of the frame assembly is defined by respective distal portions of the frame members, each of the distal portions of the frame members including a longitudinal portion and a transverse portion.

In some aspects of the present disclosure, the jaws are secured between longitudinal portions of the distal portion of the frame member.

In certain aspects of the present disclosure, each of the frame members is formed from sheet metal and the jaws are formed from stainless steel.

In aspects of the present disclosure, the distal portions of the frame members are welded together.

In aspects of the present disclosure, the jaws, anvil assembly, and cartridge assembly are curved.

In aspects of the present disclosure, the stapling device includes a lockout mechanism supported on a distal portion of the frame assembly and adapted to move the cartridge assembly from the spaced position to the clamped position after the cartridge assembly has been fired. is operable to prevent movement of the

Another aspect of the present disclosure relates to a stapling device that includes a frame assembly, jaws, clamp slide assembly, anvil assembly, and cartridge assembly. The frame assembly includes first and second frame members formed from sheet metal. The first and second frame members are secured together to define a channel. Each of the first and second frame members includes proximal and distal portions. Each distal portion includes a lateral portion and a longitudinal portion. The jaws are formed from stainless steel and include transverse and longitudinal portions. A longitudinal portion of the jaw is secured within the channel between longitudinal portions of the first and second frame members. A lateral portion of the jaw includes a guide member positioned within and extending from the channel of the frame assembly. A clamp slide assembly is positioned within the channel of the frame assembly and is movable between a retracted position and an advanced position. The clamp slide assembly includes a distal portion defining a support. An anvil assembly is supported on the lateral portions of the jaws and includes a staple forming surface. A cartridge assembly is supported by the support of the clamp slide assembly and includes a body and a knife blade. The cartridge assembly is movable with the clamp slide from a first position spaced from the anvil assembly to a second position in juxtaposed alignment with the anvil assembly. A guide member is received within the body of the cartridge assembly and has a first guide surface for engaging the cartridge body and the knife blade for guiding movement of the cartridge assembly between the spaced-apart position and the clamped position. and a mating second guide surface. The guide member has a stepped configuration and includes a stepped portion. A first guide surface is positioned on the step.

Other features of the disclosure will be appreciated from the description below.

Various aspects of the disclosure are described below with reference to the drawings.
1 is a side perspective view of the disclosed surgical stapling device including aspects of the present disclosure; FIG. 2 is an enlarged view of the designated area of detail shown in FIG. 1; FIG. 2 is a frame assembly and anvil assembly of the surgical stapling device shown in FIG. 1 with parts separated; 4 is a side perspective view of the jaws of the frame assembly shown in FIG. 3; FIG. 5 is a cross-sectional view taken along section 5-5 of FIG. 2; FIG. 2 is a side perspective view from the first side of the end effector of the surgical stapling shown in FIG. 1 with the cartridge assembly shown in phantom; FIG. 2 is a side perspective view from a second side of the end effector of the surgical stapling shown in FIG. 1 with the cartridge assembly shown in phantom; FIG. 2 is a side perspective view of the end effector of the stapling device shown in FIG. 1 showing the knife of the cartridge assembly positioned within the clamp slide assembly with a portion of the clamp slide assembly removed; FIG. 2 is a cross-sectional view taken through the cartridge assembly of the end effector of the stapling device shown in FIG. 1; FIG.

The disclosed device will now be described in detail with reference to the drawings, wherein like reference numerals indicate the same or corresponding elements in each of the several figures. However, it is to be understood that the aspects of the disclosure are merely exemplary of the disclosure, which may be embodied in various forms. Well-known functions or constructions are not described in detail to avoid obscuring the present disclosure in unnecessary detail. Therefore, specific structural and functional details disclosed herein are not to be construed as limiting, but merely as a basis for the claims and the present disclosure in substantially any suitably detailed structure. should be taken as a representative basis for teaching those skilled in the art the various uses of Moreover, directional terms such as anterior, posterior, superior, inferior, superior, inferior, distal, proximal, and like terms are used to aid understanding of the description and shall not limit the present disclosure. It is not intended to be

In this description, the term "proximal" is used generally to refer to the portion of the device that is closer to the clinician, and the term "distal" is generally used to refer to the portion of the device that is farther from the clinician. used. Further, the term "endoscopic" is used generically to refer to an endoscope, laparoscope, arthroscopic, and/or any other procedure performed through a small diameter incision or cannula. Further, the term "clinician" is used generally to refer to medical personnel, including physicians, nurses, and support personnel.

The disclosed surgical stapling device includes a frame, jaws coupled to the frame, an end effector including an anvil assembly and a cartridge assembly, and a clamp slide assembly. A cartridge assembly is supported on the clamp slide assembly and movable therewith from a position spaced from the anvil assembly to a position in juxtaposed alignment with the anvil assembly. The jaws include a transverse portion that supports the anvil assembly and a longitudinal portion that includes guide members received within the cartridge assembly when the cartridge assembly is supported on the clamp slide assembly. The guide member engages the knife blade of the cartridge assembly to support and guide the knife blade as the cartridge assembly moves between the spaced-apart and clamped positions and as the surgical stapling device is fired. Including guide surface. The jaws also define guide shoulders that engage the body of the cartridge assembly as the cartridge assembly moves between the spaced apart position and the clamped position to maintain alignment between the cartridge assembly and the anvil assembly. do.

FIG. 1 shows a disclosed surgical stapling device, generally designated as stapling device 10. As shown in FIG. Stapling device 10 includes a handle assembly 12 , an elongate body 14 defining a longitudinal axis “X”, and an end effector 16 . Handle assembly 12 includes a fixed handle 18 and a trigger 19 that actuates end effector 16, i.e., moves end effector 16 between a spaced-apart position and a clamping position to release staples from end effector 16. is movable relative to the fixed handle 18 to eject the . End effector 16 includes a staple cartridge assembly 20 and an anvil assembly 22 that define an axis transverse to longitudinal axis “X” of elongate body 14 . Cartridge assembly 20 includes a body 20a supported on a distal end portion of elongated body 14 and movable relative to anvil assembly 22 between a spaced position (FIG. 1) and a clamped position. It is possible. In the clamped position, cartridge assembly 20 is in juxtaposed alignment with anvil assembly 22 . In some aspects of the present disclosure, cartridge assembly 20 and anvil assembly 22 are laterally aligned to facilitate access to particular anatomical regions of a patient during certain surgical procedures, such as lower anterior resection surgery. Curved along the axis.

2 and 3 show frame assembly 28 and clamp slide assembly 30 of stapling device 10. FIG. Frame assembly 28 includes first and second spaced apart frame members 28 a , 28 b and jaws 31 . Each of the frame members 28a, 28b (Fig. 3) includes a proximal portion 34 forming part of the handle assembly 12 (Fig. 1), a central portion 36 forming part of the elongate body 14, and an end effector. 16 (Fig. 2). The frame members 28a, 28b are secured together using securing members, such as rivets 40, in a spaced apart relationship to define a frame assembly channel 42 (Fig. 4) between the frame members 28a, 28b. Channel 42 receives clamp slide assembly 30 and thrust bar 33 (FIG. 8). A thrust bar 33 is provided to facilitate firing staples (not shown) from cartridge assembly 20 to anvil assembly 22 . For a more detailed description of handle assembly 12 and operation of thrust bar 33, see U.S. Pat. No. 6,817,508 (the "'508 patent"). It is envisioned that the frame assembly could be formed of a single component rather than two components as described above.

Clamp slide assembly 30 is received within channel 42 ( FIG. 2 ) of frame assembly 28 and includes a distal portion that defines support 41 for cartridge assembly 20 . Support 40 is movable relative to jaws 31 of frame assembly 28 from a retracted position to an advanced position to move cartridge assembly 20 from the spaced position to the clamped position. In aspects of the present disclosure, the cartridge assembly 20 is slidably received within the support 40 of the clamp slide assembly 30, and the cartridge after firing to facilitate reuse of the stapling device 10 (FIG. 1). It is removable to allow replacement of the assembly 30 . For a more detailed description of the clamp slide assembly 30 and cartridge assembly 30, see the '508 patent.

A distal portion 38 (FIG. 3) of each frame member 28a, 28b includes a transverse portion 46 and a longitudinal portion 48. As shown in FIG. A transverse portion 46 abuts the central portion 36 of each frame member 28a, 28b, and a longitudinal portion 48 extends distally therefrom. When the frame members 28a, 28b are joined together by the rivets 40, the frame members 28a, 28b are spaced apart from each other to define a channel 47 between the frame members 28a, 28b. Each longitudinal portion 48 of the distal portion 38 of each frame member 28 a , 28 b defines a through hole 49 .

FIG. 4 shows jaw 31 of frame assembly 28 including longitudinal portion 50 and transverse portion 52 . Transverse portion 52 has a shape corresponding to the shape of cartridge assembly 30 and includes a substantially planar proximal surface 54 and sidewalls 56 . In aspects of the present disclosure, the lateral portion defines an aperture 58 that opens onto the planar surface 54 and the side wall 56 includes a cutout 60 and a lateral aperture 62 . Apertures 58 are positioned to receive alignment pins (not shown) of cartridge assembly 30 and notches 60, and apertures 62 are aligned with anvil assembly 22 (see FIG. 3) facilitates fixation.

Longitudinal portion 50 of jaw 31 includes a body 66 having an inner surface 67a and an outer surface 67b. Body 66 has a stepped configuration and includes a guide member 68 having a width that gradually decreases toward inner surface 67a. Body 66 of longitudinal portion 50 of jaw 31 has a minimum width closer to inner surface 67 a of body 66 . Guide member 68 extends proximally beyond outer surface 67 b of body 66 to define a knife guide surface 76 that extends longitudinally along the length of longitudinal portion 50 of jaw 31 . In aspects of the present disclosure, the guide surface 76 includes a vertical portion 76a and a horizontal portion 76b, as seen in FIG. The guide member 68 also extends longitudinally along the length of the longitudinal portion 50 of the jaws 31 and guides the cartridges of the cartridge assembly 20 as the cartridge assembly 22 is moved between the spaced-apart and clamped positions. A guide shoulder 78 is defined having a guide surface 78a (FIG. 4) that engages and guides the body 20a. Longitudinal portion 50 of jaw 31 also defines through hole 79 .

FIGS. 2 and 3 show anvil assembly 22 including anvil member 80 and cutting plate 82 . Anvil member 80 includes a proximally facing surface 84 defining a plurality of staple forming recesses and spaced apart flanges 86 defining apertures 88 . Anvil member 80 is secured laterally to jaws 31 by rivets or screws 90 (FIG. 2) that extend through holes 88 in flange 86 and into holes 62 in jaws 31 (FIG. 4) to secure flanges 86 within notches 60. It is fixed to the direction portion 52 . Cutting plate 82 is clamped between lateral portion 52 of jaws 31 and anvil member 80 when anvil member 80 is secured to lateral portion 52 of jaws 31 .

Longitudinal portions 48 of distal portions 46 of frame members 28a, 28b of frame assembly 28 support a lockout assembly 100 (FIG. 3). Lockout assembly 100 includes locking member 102 and biasing member 104 . The lock member 102 is rotatably supported between the frame members 28a and 28b and is movable between a locked position and an unlocked position. Biasing member 104 includes a twist and is positioned to bias locking member 102 toward the locked position. Lockout assembly 100 is positioned to prevent re-advancement of cartridge assembly 20 from the spaced position toward the clamped position after cartridge assembly 20 has been fired. See the '508 patent for a detailed description of the operation of the lockout mechanism.

5-7 show the frame assembly 28 and jaws 31 assembled. The frame members 28a, 28b are secured together and to the jaws 31 by rivets 40 extending through openings 49 in the frame members 28a, 28b and through holes 79 in the jaws 31 (FIG. 4). In aspects of the present disclosure, the frame members 28a, 28b are formed from sheet metal and are also welded together along weld lines 92. As shown in FIG. In some aspects of the present disclosure, jaws 31 are formed from stainless steel and are clamped between frame members 28a, 28b.

When jaws 31 are secured between longitudinal portions 48 of distal portions 46 of frame members 28 a , 28 b , guide members 68 of body 66 of longitudinal portions 50 of jaws 31 protrude from channel 47 . Extends inwardly from a channel 47 (FIG. 5) defined between frame members 28a, 28b as shown. When cartridge assembly 20 is inserted into support 41 of clamp slide assembly 30 as shown in FIGS. , and extends into cartridge assembly 20 such that knife blade 98 of cartridge assembly 20 is supported on guide surface 76 of guide member 68 . When clamp slide assembly 30 is moved from its retracted position toward its advanced position to move cartridge assembly 20 from its spaced position toward its clamping position, main body 20a of cartridge assembly 20 engages longitudinal portions 50 of jaws 31. The knife blade 98 moves along the guide surface 76 to maintain the cartridge assembly 20 in proper alignment with the anvil assembly 22 .

Those skilled in the art will appreciate that the apparatus and methods specifically described herein and illustrated in the accompanying drawings are non-limiting, exemplary aspects of the present disclosure. It is contemplated that elements and features illustrated or described in connection with one exemplary embodiment may be combined with other elements and features without departing from the scope of the present disclosure. Likewise, those skilled in the art will appreciate further features and advantages of the present disclosure based on the above-described aspects of the present disclosure. Accordingly, the present disclosure is not to be limited by what has been particularly shown and described, except as indicated by the appended claims.

Claims (15)

a frame assembly defining a channel and including a proximal portion and a distal portion, the distal portion including a lateral portion and a longitudinal portion;
A jaw including a transverse portion and a longitudinal portion, wherein the longitudinal portion of the jaw is secured within the channel at the longitudinal portion of the frame assembly, and the transverse portion of the jaw extends through the frame assembly. a jaw including a guide member positioned within and extending from the channel of
a clamp slide assembly positioned within the channel of the frame assembly and movable between a retracted position and an advanced position, the clamp slide assembly including a distal portion defining a support;
an anvil assembly supported on the jaws, the anvil assembly including a staple forming surface;
A cartridge assembly supported by the support of the clamp slide assembly, the cartridge assembly including a body and a knife blade and in juxtaposed alignment with the anvil assembly from a first position spaced from the anvil assembly. a cartridge assembly movable with the clamp slide to two positions;
with
The guide member is received within the body of the cartridge assembly and includes a first guide that engages the cartridge body to guide movement of the cartridge assembly between the spaced apart position and the clamped position. a surface and a second guide surface for engaging the knife blade;
stapling device. 2. The stapling device of claim 1, wherein the guide member has a stepped configuration and includes a stepped portion, the stepped portion forming the first guide surface. 3. The stapling device of Claim 2, wherein the second guide surface includes a horizontal surface and a vertical surface. 2. The stapling device of claim 1, wherein the frame assembly includes first and second frame members secured together in spaced apart relationship by rivets to define the channel. . The distal portion of the frame assembly is defined by respective distal portions of the frame members, each of the distal portions of the frame members including a longitudinal portion and a transverse portion, and the jaws include: 5. The stapling device of claim 4, secured between the longitudinal portions of the distal portion of the member. The stapling device of claim 5, wherein each of said frame members is formed from sheet metal and said jaws are formed from stainless steel. The stapling device of claim 6, wherein the distal portions of the frame members are welded together. The stapling device of claim 1, wherein the jaws, anvil assembly, and cartridge assembly are curved. Further including a lockout mechanism supported on the distal portion of the frame assembly, the lockout mechanism preventing movement of the cartridge assembly from the spaced position to the clamped position after the cartridge assembly has been fired. 2. The stapling device of claim 1, wherein the stapling device is operable to: A frame assembly including first and second frame members formed from sheet metal and secured together to define a channel; each of the frame members of each includes a proximal portion and a distal portion, each of the distal portions including a transverse portion and a longitudinal portion;
A jaw formed from stainless steel and including a transverse portion and a longitudinal portion, said longitudinal portion of said jaw being secured within said channel between said longitudinal portions of said first and second frame members. a jaw wherein said lateral portion of said jaw includes a guide member positioned within and extending from said channel of said frame assembly;
a clamp slide assembly positioned within the channel of the frame assembly and movable between a retracted position and an advanced position, the clamp slide assembly including a distal portion defining a support;
an anvil assembly supported by the lateral portion of the jaws, the anvil assembly including a staple forming surface;
A cartridge assembly supported by the support of the clamp slide assembly, the cartridge assembly including a body and a knife blade and in juxtaposed alignment with the anvil assembly from a first position spaced from the anvil assembly. a cartridge assembly movable with the clamp slide to two positions;
with
The guide member is received within the body of the cartridge assembly and includes a first guide that engages the cartridge body to guide movement of the cartridge assembly between the spaced apart position and the clamped position. and a second guide surface for engaging the knife blade, wherein the guide member has a stepped configuration and includes a step, the step defining the first guide surface. ,
stapling device. The stapling device of Claim 10, wherein the second guide surface includes a horizontal surface and a vertical surface. 11. The stapling device of claim 10, wherein the first frame member and the second frame member are secured together in a spaced apart relationship by rivets to define the channel. The stapling device of claim 10, wherein the distal portions of the first and second frame members are welded together. The stapling device of claim 10, wherein the jaws, anvil assembly, and cartridge assembly are curved. Further including a lockout mechanism supported on the distal portion of the frame assembly, the lockout mechanism preventing movement of the cartridge assembly from the spaced position to the clamped position after the cartridge assembly has been fired. 11. The stapling device of claim 10, wherein the stapling device is operable to:

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