CN217066465U

CN217066465U - Surgical suture instrument

Info

Publication number: CN217066465U
Application number: CN202121461679.6U
Authority: CN
Inventors: 刘赤荣; 杨迁红
Original assignee: Covidien LP
Current assignee: Covidien LP
Priority date: 2020-07-09
Filing date: 2021-06-29
Publication date: 2022-07-29
Anticipated expiration: 2031-06-29
Also published as: WO2022006804A1

Abstract

The present disclosure relates to a surgical stapling instrument including an anvil body and a cartridge body coupled to the anvil body. The cartridge body includes first and second sidewalls for defining a channel between each of the first and second sidewalls. Each of the first and second sidewalls includes an inner wall. The inner wall of the first sidewall includes a first safety feature. The surgical stapling instrument further includes a staple cartridge releasably mounted within the channel of the cartridge body, having first and second sides and having a first length. The first side of the staple cartridge defines a second safety feature. The first and second safety features are configured to permit insertion of the staple cartridge within the channel of the cartridge body if the staple cartridge and the cartridge are compatible with one another. With the present disclosure, it is possible to ensure that a suitable staple cartridge is loaded into a suitable surgical stapling instrument and to releasably secure the suitable staple cartridge with the surgical stapling instrument.

Description

Surgical suture instrument

Technical Field

The present disclosure relates to a surgical stapling instrument, and more particularly, to a method for ensuring that a proper staple cartridge is loaded into and retained within a cartridge support post of a surgical stapling instrument.

Background

Surgical stapling instruments for dispensing staples to engage tissue during a surgical procedure are well known. Linear surgical stapling instruments typically include a tool assembly including a staple cartridge that houses a plurality of staples, an anvil disposed opposite the staple cartridge, and a firing mechanism for ejecting the staples from the staple cartridge. The tool assembly is movable between a spaced position and a clamping position to clamp tissue between the staple cartridge and the anvil. The firing mechanism is configured to sequentially eject a row of staples from the staple cartridge through the tissue and into the anvil for formation by the anvil. A knife may be used to sever the tissue between the staple lines. The surgical stapling instrument also includes a cartridge body defining a channel that receives the staple cartridge. The staple cartridge is removable from the channel member to allow replacement of a used staple cartridge to facilitate reuse of the surgical stapling apparatus.

Different sizes of surgical stapling instruments can be provided to accommodate different sizes of staple cartridges. It would be beneficial if a surgical stapling instrument and associated staple cartridge had safety features to ensure that the proper staple cartridge was loaded into the proper surgical stapling instrument. Additionally, it would be beneficial if the safety features were further configured to releasably secure a suitable staple cartridge with the surgical stapling instrument.

SUMMERY OF THE UTILITY MODEL

A surgical stapling instrument includes an anvil body and a cartridge body coupled to the anvil body. The cartridge body includes first and second sidewalls for defining a channel between each of the first and second sidewalls. Each of the first and second sidewalls includes an inner wall. The inner wall of the first sidewall includes a first security feature. The surgical stapling instrument further includes a staple cartridge releasably mounted within the channel of the cartridge body, having first and second sides and having a first length. The first side of the staple cartridge defines a second safety feature. The first and second safety features are configured to permit insertion of the staple cartridge within the channel of the cartridge body if the staple cartridge and the cartridge are compatible with one another.

In certain aspects of the present disclosure, the first security feature is a bump feature and the second security feature is a recess.

With the present disclosure, it is possible to ensure that a suitable staple cartridge is loaded into a suitable surgical stapling instrument and to releasably secure the suitable staple cartridge with the surgical stapling instrument.

Drawings

Various aspects of the disclosed surgical stapling instrument are described below with reference to the accompanying drawings, in which:

FIG. 1 is a perspective view of an exemplary aspect of a surgical stapling instrument incorporating the safety features of the present disclosure;

FIG. 2 is an exploded perspective view of the surgical stapling instrument showing the cartridge body, the anvil body, the staple cartridge, and the firing components;

FIG. 3 is a perspective view of a cartridge support post and corresponding staple cartridge of the cartridge body, with the components separated, according to one aspect of the present disclosure;

FIG. 4 is a perspective view of the cartridge support column and staple cartridge shown in FIG. 3 having been secured to one another;

FIG. 5 is a cross-sectional end view taken along section line 5-5 shown in FIG. 4;

FIG. 6 is a cross-sectional side view taken along section line 6-6 shown in FIG. 4;

FIG. 7 is a cross-sectional end view of a cartridge support post and a corresponding staple cartridge of the cartridge body according to another aspect of the present disclosure;

FIG. 8 is a perspective side view of a staple cartridge according to another aspect of the present disclosure; and

FIG. 9 is a cross-sectional end view of the cartridge support column and staple cartridge of the cartridge body illustrated in FIG. 8.

Detailed Description

A surgical stapling instrument incorporating aspects of the present disclosure will now be described in detail with reference to the drawings, wherein like reference numerals designate identical or corresponding elements in each of the several views. In this description, the term "proximal" is generally used to refer to the portion of the device that is closer to the clinician, while the term "distal" is generally used to refer to the portion of the device that is farther from the clinician. The term "clinician" is commonly used to refer to medical personnel, including doctors, nurses, and support staff. Additionally, the term "compatible" is generally used to refer to a staple cartridge if such a staple cartridge is of a suitable size or contains characteristics that allow the staple cartridge to be received within a cartridge support channel and used by a surgical stapling instrument to be fired.

The disclosed surgical stapling instrument includes an anvil body, a cartridge body, an actuator or rod configured to move the anvil body and the cartridge body between a spaced position and a clamped position, and a firing member. The staple cartridge is, for example, a Single Use Loading Unit (SULU) or a multiple use loading unit ("MULU"), which may be mounted to the cartridge body. The stapling instrument further includes safety features that ensure that the proper staple cartridge is loaded into and secured to the cartridge body.

Fig. 1 and 2 illustrate an exemplary surgical stapling instrument, generally designated as surgical stapling instrument 10, incorporating the safety features of the present disclosure. The stapling instrument 10 includes an anvil body 12 defining a longitudinal axis "K", a cartridge body 14 supporting a clamp bar 16, a staple cartridge or disposable loading unit ("SULU") 18 mountable to the cartridge body 14, and a firing assembly 20.

The cartridge body 14 of the stapling instrument 10 includes a cartridge support post 22 having a proximal section 24 (fig. 2) and a distal section 26. A proximal section 24 of the cartridge support post 22 receives the firing assembly 20 and pivotally supports the clamp bar 16, and a distal section 26 receives the staple cartridge 18. The cartridge support post 22 includes a bottom wall 30 and first and

second side walls

32, 34 extending from the bottom wall 30. The bottom wall 30 and the first and

second side walls

32, 34 define a channel 31 extending along the proximal and

distal sections

24, 26. The firing assembly 20 is received within the channel 31 in the proximal section 24, and the staple cartridge 18 is received within the channel 31 in the distal section 26. The first and

second side walls

32, 34 have distal ends that define first and

second grooves

33, 35. The first and

second recesses

33, 35 receive the first and

second tab portions

18a, 18b (FIG. 1, 2), respectively, of the staple cartridge 18 via a snap-fit connection.

Anvil body 12 of stapling instrument 10 includes an anvil handle 28 and an anvil plate 30. The clamp lever 16 of the stapling instrument 10 is pivotally supported on the cartridge body 14 and is engageable with the anvil body 12 such that movement of the clamp lever 16 from an undamped position (fig. 2) to a clamped position (fig. 1) moves the anvil body 12 into close proximity with the cartridge body 14.

FIG. 2 shows the firing assembly 20 of the stapling instrument 10 including a firing bar 32 and a firing member 34 extending from the firing bar 32. When the clamp bar 16 is in the clamped position and tissue to be engaged is positioned between the staple cartridge 18 and the anvil plate 30, the firing assembly 20 may be actuated by advancing the firing assembly 20 along the longitudinal axis "K" whereby the firing member 34 cooperates with a staple pusher (not shown) within the staple cartridge 18 to eject a plurality of rows of staples from within the staple cartridge 18 for engagement and formation by the anvil plate 30. In certain aspects of the present disclosure and as shown, the staple cartridge 18 houses two sets of three rows of staples delivered through tissue. A knife (not shown) may be provided that traverses a knife channel defined by the staple cartridge 18 to sever tissue between the two groups of staple rows.

For a detailed discussion of the construction and operation of an exemplary surgical stapling instrument, reference may be made to U.S. patent No. 8,505,801 to Ehrenfels et al.

Fig. 3-9 illustrate staple cartridges having three different lengths, and corresponding cartridge receiving support posts for receiving each respective staple cartridge. Fig. 3-6 illustrate a first staple cartridge 118 having a first length "x" and a first cartridge support post 122 of a surgical stapling instrument, such as surgical stapling instrument 10 (fig. 1), configured to receive first staple cartridge 118. Fig. 7 illustrates a second staple cartridge 218 having a second length "y" and a second cartridge support post 222 of a surgical stapling instrument, such as surgical stapling instrument 10 (fig. 1), configured to receive second staple cartridge 218. Fig. 8 and 9 illustrate a third staple cartridge 318 having a third length "z" and a third cartridge support post 322 of a surgical stapling instrument, such as the surgical stapling instrument 10 (fig. 1), configured to receive the third staple cartridge 318. First, second, and

third staple cartridges

118, 218, 318 and first, second, and third

cartridge support columns

122, 222, 322 are substantially similar to staple cartridge 18 and cartridge support column 22 described above, and only the differences therebetween will be described in detail.

In certain aspects of the present disclosure, the first length "x" of first staple cartridge 118, the second length "y" of second staple cartridge 218, and the third length "z" of third staple cartridge 318 are 100mm, 80mm, and 60mm, respectively, although other lengths are contemplated. As shown, first length "x", second length "y", and third length "z" are measurements of the rows of staples for first staple cartridge 118, second staple cartridge 218, and third staple cartridge 318, respectively. It is contemplated that the length may actually refer to the overall length of the staple cartridge. It is also contemplated that staple cartridges may be distinguished by staple size (height and/or width), number of rows, staple coating, staple material, and the like.

Each of first staple cartridge 118 and first cartridge support post 122, second staple cartridge 218 and second cartridge support post 222, and third staple cartridge 318 and third cartridge support post 322, respectively, includes a safety feature 140 (fig. 5), 240 (fig. 7), 340 (fig. 9). The safety features 140, 240, 340 are configured to ensure that only the appropriate staple cartridge is received within the cartridge support posts 122, 222, 322, respectively. Safety features 140, 240, 340 may further be configured to secure first, second, and third

staple cartridges

118, 218, 318 within appropriate first, second, or third cartridge support posts 122, 222, 322, for example, of suitable size, using, for example, a snap-fit connection.

FIG. 3 illustrates the safety feature 140 of first staple cartridge 118 and first cartridge support post 122. More specifically, first staple cartridge 118 defines a recess or cutout 151 formed on first side 150 of first staple cartridge 118. The recess 151 is configured to receive a tab feature 160 extending from the inner surface 132a of the first sidewall 132 of the first cartridge support post 122. The recess 151 may include a profile or profile that matches the profile or profile of the bump feature 160. As shown, the recess 151 comprises a circular cross-section. Although shown as being formed in a distal portion of first staple cartridge 118, it is contemplated that recess 151 may be formed at any location along the length of first staple cartridge 118.

As mentioned above, the bump features 160 extend from the inner surface 132a of the first sidewall 132 of the first bin support post 122. When first staple cartridge 118 is properly received within channel 131 of first cartridge support post 122, tab feature 160 is positioned to be received within recess 151 of first staple cartridge 118. More specifically, the tab features 160 of the first cartridge support post 122 are positioned such that when the first and

second tab portions

118a, 118b of the first staple cartridge 118 are received within the first and

second grooves

133, 135 in the distal ends of the first and

second sidewalls

132, 134 of the first cartridge support post 122 and the first staple cartridge 118 is pivoted into the channel 131 of the first cartridge support post 122, the tab features 160 are received within the recesses 151 in the first staple cartridge 118 in a snap-fit manner.

FIG. 6 shows a flange 154 of first staple cartridge 118 forming the distal side of recess 151 and a pair of tabs 156 formed at the open ends of recess 151. The tab 156 engages a tab feature 160 of the first cartridge support post 122 to releasably secure the first staple cartridge 118 within the first cartridge support post 122. The flange 154 is configured to flex outwardly such that the tab feature 160 of the first cartridge support post 122 is receivable within the recess 151 of the first staple cartridge. In aspects of the present disclosure, first staple cartridge 118 defines a weakened portion 153, such as a groove, positioned adjacent to flange 154 to facilitate bending of flange 154. In certain aspects of the present disclosure, the flange 154 is configured to bend 0.3 mm. The flange 154 may include ribs 154a or other structural supports for maintaining the rigidity of the flange 154. First staple cartridge 118 can include sloped

surfaces

158a, 158b on both sides of recess 151 for facilitating receipt (or guidance) of tab feature 160 into recess 151 during loading of first staple cartridge 118 into first cartridge support post 122.

FIG. 7 shows safety feature 240 of second staple cartridge 218 and second cartridge support post 222. As mentioned above, second staple cartridge 218 and second cartridge support column 222 are substantially similar to first staple cartridge 118 and first cartridge support column 122 described above, and only the differences therebetween will be described.

Second staple cartridge 218 comprises a length "y". The length "y" of second staple cartridge 218 is shorter than the length "x" of first staple cartridge 118 (FIG. 4). As such, second staple cartridge fails to function properly in first cartridge support column 122 and first staple cartridge 118 fails to function properly in second cartridge support column 222. As mentioned above, to prevent incompatible staple cartridges (e.g., incorrectly sized staple cartridges) from being loaded into the wrong cartridge support column, the first and second

staple cartridges

118, 218 and the respective first and second

cartridge support columns

122, 222 include respective first and second safety features 140, 240 that correspond to features of a staple cartridge having particular characteristics, such as a particular length. More specifically, second cartridge support post 222 includes tab feature 260 extending from inner surface 234a of second sidewall 234, and second staple cartridge 218 includes recess 251 formed on second side 252. Although not shown, the second staple cartridge 218 includes a flange for engaging the tab feature 260 in a snap-fit manner. By including the tab feature 260 on the second sidewall 234 of the second cartridge support post 222 and the recess 251 on the second side 252 of the second staple cartridge 218, the second staple cartridge 218 is not compatible with and cannot be received within the first cartridge support post 122, and the first staple cartridge 118 is not compatible with and cannot be received within the second cartridge support post 222.

Fig. 8 and 9 illustrate the safety feature 340 of the third staple cartridge 318 and the third cartridge support post 322. As mentioned above, third staple cartridge 318 and third cartridge support post 322 are substantially similar to first staple cartridge 118 and second staple cartridge 218 and first cartridge support post 122 and second cartridge support post 222 described above, and only the differences therebetween will be described.

Third staple cartridge 318 comprises a length "z". Length "z" is shorter than length "y" (fig. 7) of second staple cartridge 218 and length "x" of first staple cartridge 118. Due to the differences in length and safety features 350, third staple cartridge 318 is not compatible with and cannot be received in first or second

cartridge support columns

122, 222, and neither first staple cartridge 118 nor second staple cartridge 218 is compatible with and cannot be properly received within third cartridge support column 322. First safety feature 140 of first staple cartridge 118 and first cartridge support column 122, second safety feature 240 of second staple cartridge 218 and second cartridge support column 222, and third safety feature 340 of third staple cartridge 318 and third cartridge support column 322 prevent an improper staple cartridge from being loaded into the cartridge support column.

The third cartridge support post 322 includes a tab feature 360 (fig. 9) extending from the inner surface 332a of the first sidewall 332 and a tab feature 370 (fig. 9) extending from the inner surface 334a of the second sidewall 334. Third staple cartridge 318 includes a first recess 351 formed on first side 350 and a second recess 361 formed on second side 252. Only one of the first and second

concave portions

351 and 361 includes the protruding portion 356. In this manner, the force required to separate each of first staple cartridge 118 and second staple cartridge 218 from their respective first cartridge support column 122 and second cartridge support column 218 is the same as the force required to separate third staple cartridge 318 from third cartridge support column 322.

By including a first tab feature 360 on the first sidewall 332 of the third cartridge support post 322 and a second tab feature 370 on the second sidewall 334 of the third cartridge support post 322 and corresponding first and

second recesses

351 and 361 on the respective first and second sides 250 and 252 of the third staple cartridge 318, the third staple cartridge 318 is not compatible with either the first or second cartridge support posts 122 and 222 and the third cartridge support post 322 cannot receive either the first or second

staple cartridges

118 and 218.

During a surgical stapling procedure, a clinician can ensure that a suitable staple cartridge is used with a suitable cartridge support post by: the respective first and

second tab portions

118a, 218a, 318a (only one shown) of the respective first, second, and third

staple cartridges

118, 218, 318 are received in respective first and second recesses 133, 233, 333 (only one shown) in the distal ends of the respective first, second, and third

cartridge support columns

122, 222, 322 and pivot the respective first, second, or

third cartridge

118, 218, 318 down into the respective channels 131, 231, 331 of the first, second, and third

cartridge support columns

122, 222, 322. The staple cartridge and the cartridge support column are the same size if the first, second, or

third cartridge

118, 218, 318 is received within the respective channel 131, 231, 331 in a snap-fit manner. If the staple cartridge fails to engage the cartridge support post in a snap-fit manner, the staple cartridge and the cartridge support post are of different sizes and another staple cartridge is required. The snap-fit connection may generate audible, visual, and/or tactile feedback indicating to the clinician that the connection is correct.

Although the disclosed surgical stapling instrument 10 is illustrated as an open linear surgical stapler, it is contemplated that the benefits of the present disclosure may be incorporated into a variety of different types of surgical stapling instruments, including, for example, endoscopic linear staplers.

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

Claims

1. A surgical stapling instrument, characterized in that it comprises:

an anvil body defining a longitudinal axis;

a cartridge body coupled to the anvil body, the cartridge body comprising first and second sidewalls for defining a channel between each of the first and second sidewalls, each of the first and second sidewalls comprising an inner wall, the inner wall of the first sidewall comprising a tab feature, wherein the first sidewall and the second sidewall have distal ends that define a first groove and a second groove; and

a staple cartridge releasably mounted within the channel of the cartridge body, including first and second sides and having a first length, the first side of the staple cartridge defining a recess feature having an open end, the staple cartridge comprising a pair of projections formed at the open end of the recess feature;

wherein the tab feature and recess feature are configured to permit insertion of the staple cartridge within the channel of the cartridge body if the staple cartridge and the cartridge body are compatible with one another,

the first and second recesses receive respective first and second tab portions of the staple cartridge via a snap-fit connection.

2. The surgical stapling instrument of claim 1, wherein the staple cartridge further comprises a flange forming a distal side of the recess feature, and further defines a weakened portion positioned adjacent to the flange to facilitate bending of the flange.

3. The surgical stapling instrument of claim 2, wherein the staple cartridge further comprises sloped surfaces on both sides of the recessed feature.