Indicating assembly, nail bin assembly and surgical anastomat

Abstract

The utility model provides an indication assembly, a nail bin assembly and a surgical anastomat, the indication assembly is arranged on a shaft assembly of the surgical anastomat, a nail bin is arranged at the far end of the shaft assembly, the indication assembly comprises an indication piece, an elastic piece and a stop piece, and the indication piece comprises a first indication part and a second indication part; the shaft assembly comprises a first shell and a driving assembly located in the first shell, the indicating assembly is located in the first shell, and the driving assembly axially moves in the first shell to trigger the nail bin; in the initial state, the first indicating part is visually located at the window of the first shell, and the stopping piece stops the indicating piece from moving in the first direction. When the nail bin is triggered, the stopping piece is driven by the driving assembly to rotate until the indicating piece is not blocked, and the indicating piece is driven by the elastic piece to move in the first direction, so that the second indicating part is visible at the window. The different positions of the indicating piece are visible at the window of the shell, so that whether the nail bin assembly is triggered or not can be judged more quickly.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to an indicator assembly, a staple cartridge assembly, and a surgical stapler. Background Art

[0002] In the prior art, a surgical stapler includes an instrument platform, an operating handle movably connected to the instrument platform, and a stapler assembly that cooperates with the instrument platform. The instrument platform includes a firing assembly. The stapler assembly includes an elongated body and a tool assembly disposed at the distal end of the elongated body, the tool assembly including a stapler and anvil disposed relative to each other. During surgery, tissue is placed between the stapler and anvil, the distance between the anvil and stapler is adjusted to gradually clamp the tissue, and then the operating handle is used to move the drive assembly distally, causing the staples to be formed on the anvil, completing the tissue anastomosis. This process is called firing the stapler.

[0003] During use, it is difficult to intuitively and quickly determine whether the nail magazine assembly has been fired based on its appearance. The fired nail magazine assembly may not be replaced in time, resulting in repeated loading of the fired nail magazine assembly. Utility Model Content

[0004] In response to the problems in the prior art, the purpose of this application is to provide an indicator assembly, a stapler assembly and a surgical stapler. By making the different positions of the indicator visible at the shell window, it is possible to more quickly determine whether the stapler assembly has been fired, thereby avoiding repeated loading of the fired stapler assembly.

[0005] An embodiment of the present application provides an indicator assembly, which is disposed on a shaft assembly of a surgical stapler, wherein a staple cartridge is disposed at a distal end of the shaft assembly. The indicator assembly is characterized in that it includes an indicator member, an elastic member, and a stop member. The indicator member includes a first indicator portion and a second indicator portion. The elastic member is configured to provide a biasing force to the indicator member to cause it to move in a first direction.

[0006] The shaft assembly includes a first housing and a drive assembly located in the first housing. The first housing is provided with a window. The indicator assembly is located in the first housing. The drive assembly moves axially in the first housing to fire the nail cartridge.

[0007] Wherein, in the initial state, the first indicator is visibly located at the window, and the stopper blocks the movement of the indicator along the first direction;

[0008] When the nail magazine is fired, the stopper is driven by the driving assembly to rotate until it no longer blocks the indicator, and the indicator is driven by the elastic member to move along the first direction so that the second indicator portion is visible at the window.

[0009] In some embodiments, the shaft assembly further includes a second shell, the second shell is disposed inside the first shell, the second shell is provided with an assembly groove, and the indicator is slidably disposed in the assembly groove.

[0010] In some embodiments, a mounting portion is provided at one end of the indicator, the mounting portion is disposed in the assembly groove, and the elastic member is a spring sleeved on the outside of the mounting portion.

[0011] In some embodiments, in an initial state, the stopper abuts against a first end of the indicator, and the elastic member abuts against a second end opposite to the indicator.

[0012] In some embodiments, the first indicator portion is disposed at a distal end of the second indicator portion.

[0013] In some embodiments, the driving assembly includes a driving member, the driving member includes a driving portion, and the stopping member includes a pivoting portion, a first stopping portion, and a second stopping portion;

[0014] When the nail magazine is fired, the driving part moves toward the distal direction, and the driving part drives the first stop part to move in the direction away from the central axis of the first shell, and the second stop part moves in the direction close to the central axis of the first shell and no longer blocks the movement of the indicator along the first direction.

[0015] In some embodiments, the indicator includes a supporting portion, and the supporting portion has an inclined guide surface on the side facing the central axis of the first shell; when the drive assembly moves in the distal direction, the second stop portion moves toward the direction close to the central axis of the first shell under the guidance of the guide surface.

[0016] An embodiment of the present application also provides a nail magazine assembly, including: a slender body and a tool assembly, the slender body includes a proximal part and a distal part, the tool assembly is arranged at the distal part, and the proximal part includes the above-mentioned indication assembly.

[0017] An embodiment of the present application also provides a surgical stapler, comprising the above-mentioned staple cartridge assembly.

[0018] In some embodiments, the surgical stapler includes a handle portion and a connecting portion extending from the handle portion, wherein the connecting portion is configured to be detachably connected to the proximal portion.

[0019] The indicator assembly, staple cartridge assembly, and surgical stapler provided by the present application have the following advantages:

[0020] The present application uses a rotatable stopper to keep the first indicator portion of the indicator visible at the window in the initial state, indicating that the staple cartridge assembly is in the initial state. When the stapler is fired, the stopper is driven to rotate, releasing the stopper's lock on the indicator portion, and the biasing force of the elastic member drives the indicator portion to move, making the second indicator portion visible at the window. Therefore, the present application indicates the firing state of the staple cartridge assembly by making different positions of the indicator portion visible at the housing window. The doctor can more quickly determine whether the staple cartridge assembly has been fired, promptly replace the fired staple cartridge assembly, and effectively avoid reloading the fired staple cartridge assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Other features, objects and advantages of the present application will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings.

[0022] Figure 1 This is a schematic structural diagram of a stapler assembly of a surgical stapler according to an embodiment of the present application;

[0023] Figure 2 This is a schematic structural diagram of the shaft assembly according to one embodiment of the present application in an initial state with the first housing omitted;

[0024] Figure 3 This is a schematic structural diagram of a shaft assembly according to an embodiment of the present application with the first housing and the second housing omitted;

[0025] Figure 4 It is a structural diagram of an indicator component according to an embodiment of the present application;

[0026] Figure 5 is a partial schematic diagram of a shaft assembly according to an embodiment of the present application;

[0027] Figure 6 yes Figure 5 Cross-sectional view in the AA direction;

[0028] Figure 7 This is a front view of an indicator assembly according to an embodiment of the present application;

[0029] Figure 8 is a cross-sectional view of a shaft assembly after firing according to an embodiment of the present application;

[0030] Figure 9 This is an embodiment of the present application;

[0031] Figure 10 This is a schematic diagram of the structure of the shaft assembly of one embodiment of the present application after firing. DETAILED DESCRIPTION

[0032] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this application will be comprehensive and complete and will fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their repeated descriptions will be omitted. "Or" and "or" in the specification may both mean "and" or "or". Although the terms "above", "below", "between", etc. may be used in this specification to describe different exemplary features and elements of the present application, these terms are used herein only for convenience, such as according to the directions of the examples described in the accompanying drawings. Nothing in this specification should be construed as requiring a specific three-dimensional orientation of the structure to fall within the scope of this application. Although "first" or "second" etc. are used in this specification to represent certain features, they are only used to represent the function and are not intended to limit the number and importance of specific features.

[0033] In this application, the distal end and the proximal end are relative to the operator. The end closer to the operator is the proximal end, and the end farther from the operator, that is, the end closer to the surgical site is the distal end. Figure 1 ) are consistent. The direction along the central axis S0 of the stapler is the axial direction, i.e., the direction from the distal end to the proximal end of the stapler, or from the proximal end to the distal end of the stapler. For a component, the inside and outside are relative to the central axis S0 of the first housing. The side closer to the central axis S0 of the first housing is the inside, and the side farther from the central axis S0 of the first housing is the outside.

[0034] The embodiment of the present application provides an indicator assembly, a stapler assembly including the indicator assembly, and a surgical stapler including the indicator assembly. The surgical stapler includes an instrument platform, an operating handle movably connected to the instrument platform, and a stapler assembly that cooperates with the instrument platform. The instrument platform includes a firing assembly, a handle portion, and a connecting portion extending from the handle portion. Figure 1As shown, the staple cartridge assembly includes a slender body and a tool assembly 9, the slender body includes a proximal portion and a distal portion, the proximal portion of the slender body includes a shaft assembly and an indicator assembly, and the proximal portion of the slender body is detachably connected to the connecting portion of the instrument platform so that the staple cartridge assembly can be detachably mounted on the instrument platform. The distal portion of the slender body is connected to the tool assembly. The tool assembly 9 includes a staple cartridge 91 and an anvil 92 that are relatively arranged, and the staple cartridge 91 is used to store staples. The proximal end of the shaft assembly 10 is detachably mounted on the distal end of the instrument platform, and the distal end of the shaft assembly 10 is connected to the proximal end of the tool assembly 9. The staple cartridge assembly is defined here as having two states: an initial state and a post-firing state. The initial state refers to the state when the staple cartridge assembly is not fired, and the staples are still retained in the staple cartridge 91. When the stapler assembly is in the initial state, the operating handle is driven, which drives the firing assembly in the instrument platform, drives the firing member 5 in the stapler assembly to move in the distal direction, drives the staples in the stapler 91 to move toward the anvil 92 and suture on the tissue, and at the same time, the cutter cuts the tissue to realize the firing of the stapler. At this time, the stapler assembly enters the post-firing state.

[0035] like Figures 1 to 3 As shown, the shaft assembly 10 includes a first shell 1 and a drive assembly located in the first shell 1, and the drive assembly includes at least a drive member 4. An indication assembly is provided inside the shaft assembly 10, and the indication assembly includes an indication member 31, an elastic member 33 and a stop member 32. Optionally, the shaft assembly 10 also includes an elongated sleeve 8, and the sleeve 8 is provided at the distal end of the first shell 1. In another embodiment, the sleeve 8 and the first shell 1 can also be an integrally formed elongated sleeve with a uniform diameter for connecting the instrument platform and the tool assembly 9. The first shell 1 is provided with a window 11. The indication assembly is located in the first shell 1, and the drive assembly is used to move axially in the first shell 1 to fire the nail magazine 91. Refer to Figure 4 The indicator member 31 includes a first indicator portion 311 and a second indicator portion 312. The first indicator portion 311 and the second indicator portion 312 are respectively disposed on the outer sides of the indicator member 31. The first indicator portion 311 and the second indicator portion 312 can be provided with different colors, patterns, or text, for example, to distinguish the two indicator portions. For example, the first indicator portion 311 can be provided with red and the second indicator portion 312 can be provided with green, but the present application is not limited thereto. Different patterns are used in the figure to distinguish the two indicator portions, but this does not limit the scope of protection of the present application.

[0036] like Figure 2 As shown, the shaft assembly 10 further includes a second housing 2, which is inserted into the interior of the first housing 1. The second housing 2 is provided with a mounting groove 21, and an indicator 31 is slidably disposed in the mounting groove 21. The indicator 31 can move axially in the mounting groove 21, but cannot move laterally or longitudinally relative to the mounting groove 21. In the initial state, the indicator 31 is located at the proximal end of the mounting groove 21. Figure 3and Figure 4 As shown, the elastic member 33 is configured to provide a biasing force to the indicator member 31 to move along a first direction. In this embodiment, the first direction is along the axial direction of the stapler and toward the distal end of the stapler. Figure 4 The proximal end of the indicator member 31 is provided with a mounting portion 314, which is disposed in the assembly slot 21. The elastic member 33 is a spring sleeved outside the mounting portion 314. However, the present application is not limited thereto. In other alternative embodiments, the elastic member 33 may also be a spring, an elastic pad, or a tension spring disposed at the first end of the indicator member 31, all of which fall within the scope of protection of the present invention.

[0037] The stopper 32 includes a pivot portion 323, a first stop portion 321 and a second stop portion 322, and the first stop portion 321 and the second stop portion 322 are respectively provided on both sides of the pivot portion 323. The pivot portion 323 is rotatably fixed in the cavity of the second shell 2 to pivot in the assembly groove 21. A supporting portion 313 is provided at the first end of the indicator 31 (the distal end of the indicator 31 in this embodiment). The second stop portion 322 is supported against the supporting portion 313 of the first end of the indicator 31, and the elastic member 33 is compressed and supported against the second end of the indicator 31 (the proximal end of the indicator 31 in this embodiment). When the stopper 32 rotates, the first stop portion 321 of the stopper 32 can be moved from a first position relatively close to the central axis S0 of the first shell 1 (such as Figure 5 ) is switched to a second position relatively far from the central axis S0 of the first housing 1 (as shown Figure 8 Correspondingly, the second stop portion 322 of the stop member 32 can be moved from a third position relatively far from the central axis S0 of the first housing 1 (as shown in FIG. Figure 5 ) is switched to a fourth position (as shown) relatively close to the central axis S0 of the first shell 1 Figure 8 In this embodiment, the indicator assembly is disposable, and the second stop portion 322 of the stop member 32 remains in the fourth position after switching to the fourth position and does not move to the third position.

[0038] The driver 4 is provided with a driving portion 41. In the initial state, the driving portion 41 is located proximal to the first stop portion 321 of the stop member 32. The driving portion 41 is axially aligned with the first stop portion 321 and is located proximal to the first stop portion 321. In this embodiment, the driver 4 is, for example, a connecting seat that moves axially within the shaft assembly 10. The distal end of the connecting seat is used to connect to a firing rod in the distal region of the shaft assembly, and the proximal end of the connecting seat is used to removably or detachably engage a driving rod in the instrument platform. The power provided by the driving rod is transmitted through the connecting seat to drive the firing rod, thereby causing the fasteners in the staple cartridge assembly to be ejected from the tissue-contacting surface of the staple cartridge.

[0039] like Figure 5 and Figure 6As shown, in the initial state, the first indicator portion 311 is visibly located in the window, and the indicator member 31 is located proximal to the assembly slot 21. In this application, "visible" in the window refers to a portion of the indicator member 31 that can be observed by the user through the window. At this point, the driving portion 41 of the driving member 4 is located proximal to the first stop portion 321 of the stop member 32 and does not act on the stop member 32. The first stop portion 321 of the stop member 32 is in a first position relatively close to the central axis S0 of the first housing 1. The second stop portion 322 of the stop member 32 is in a third position relatively far from the central axis S0 of the first housing 1. The second stop portion 322 abuts against the abutting portion 313 of the indicator member 31, blocking movement of the indicator member 31 in the first direction and maintaining the first indicator portion 311 visible in the window. At this point, the elastic member 33 is elastically deformed by the action of the indicator member 31. At this point, the doctor can determine that the cartridge assembly has not been fired by observing the first indicator portion 311 through the window.

[0040] like Figure 8 As shown, the staple cartridge is fired, and the driving member 4 is driven by the firing assembly of the stapler body to move in the distal direction, and the driving portion 41 abuts against the first stop portion 321 and pushes up the first stop portion 321. During the movement of the driving member 4 in the distal direction, the driving portion 41 drives the stop member 32 in the clockwise direction ( Figure 8 At this time, the first stopper 321 moves to the second position relatively far from the central axis S0 of the first shell 1, and the second stopper 322 moves to the fourth position relatively close to the central axis S0 of the second shell 2 (at the middle angle of view). Figure 8 (From the perspective of the second stop portion 322, the second stop portion 322 moves to the bottom of the abutting portion 313, and the second stop portion 322 no longer blocks the abutting portion 313. The indicator member 31 is driven by the biasing force (elastic deformation recovery force) of the elastic member 33 to move in the first direction, so that the second indicator portion 312 is visible through the window 11. At the same time, the driving member 4 drives the firing member 5 in the distal direction, achieving the firing of the staple cartridge assembly. The staple cartridge assembly enters the post-firing state, at which point the second indicator portion 312 is visible through the window 11.

[0041] like Figure 9 As shown in FIG, after the nail magazine assembly is fired, the indicator 31 moves to the distal end of the assembly slot 21. Figure 10As shown, after the staple cartridge assembly has been fired, the portion of the indicator 31 exposed at the window 11 switches from the first indicator portion 311 to the second indicator portion 312. The doctor can know that the staple cartridge assembly has been fired by observing the change in the display at the window 11. Therefore, the present application indicates the firing status of the staple cartridge assembly by making the different positions of the indicator 31 visible at the housing window 11. The doctor can more quickly determine whether the staple cartridge assembly has been fired, promptly replace the fired staple cartridge assembly, and effectively avoid reloading the fired staple cartridge assembly.

[0042] like Figures 6-8 As shown, optionally, an inclined guide surface 315 is provided on the side of the supporting portion 313 toward the central axis S0 of the first shell 1; when the driving member 4 moves toward the distal direction, the second stop portion 322 moves toward the direction close to the central axis S0 of the first shell 1 under the guidance of the guide surface 315.

[0043] In this embodiment, the indicator member 31 is a unidirectional, disposable component that is driven distally by the biasing force of the elastic member 33 only during the firing process of the staple cartridge assembly. After the staple cartridge assembly is fired, the elastic member 33 maintains the indicator member 31 in the proximal direction, preventing it from moving proximally. The second indicator portion 312 remains visible within the window 11, continuously indicating that the staple cartridge assembly has been fired.

[0044] In the present application, the rotatable stopper 32 maintains the first indicator portion 311 of the indicator member 31 visibly located at the window 11 in the initial state, indicating that the staple cartridge assembly is in the initial state. When the staple cartridge assembly is fired, the driver 4 directly drives the stopper 32 to rotate, releasing the lock of the stopper 32 on the indicator member 31. The biasing force of the elastic member 33 drives the indicator member 31 to move, making the second indicator portion 312 visible at the window 11. Therefore, in the present application, different positions of the indicator member 31 are visible at the housing window 11, indicating the firing state of the staple cartridge assembly. The doctor can more quickly determine whether the staple cartridge assembly has been fired, promptly replace the fired staple cartridge assembly, and effectively avoid reloading the fired staple cartridge assembly.

[0045] The above content is a further detailed description of the present application in conjunction with specific preferred embodiments, and the specific implementation of the present application cannot be considered to be limited to these descriptions. For ordinary technicians in the technical field to which the present application belongs, several simple deductions or substitutions can be made without departing from the concept of the present application, and all of them should be considered to fall within the scope of protection of the present application.

Claims

1. An indicator assembly, provided on a shaft assembly of a surgical stapler, wherein a staple cartridge is provided at the distal end of the shaft assembly, characterized in that: The indicator assembly includes an indicator member, an elastic member, and a stop member, wherein the indicator member includes a first indicator portion and a second indicator portion, and the elastic member is configured to provide a biasing force to the indicator member to move along a first direction; The shaft assembly includes a first housing and a drive assembly located in the first housing, the first housing is provided with a window, the indicator assembly is located in the first housing, and the drive assembly moves axially in the first housing to fire the nail cartridge; Wherein, in an initial state, the first indicator is visibly located at the window, and the stopper blocks the movement of the indicator along the first direction; When the nail magazine is fired, the stopper is driven by the driving assembly to rotate until it no longer blocks the indicator, and the indicator is driven by the elastic member to move along the first direction so that the second indicator is visible at the window.

2. The indicator assembly according to claim 1, characterized in that The shaft assembly further includes a second housing, the second housing is inserted into the first housing, the second housing is provided with an assembly groove, and the indicator is slidably disposed in the assembly groove.

3. The indicator assembly according to claim 2, characterized in that One end of the indicator is provided with a mounting portion, the mounting portion is arranged in the assembly groove, and the elastic member is a spring sleeved on the outside of the mounting portion.

4. The indicator assembly according to claim 1, characterized in that In an initial state, the stopper abuts against a first end of the indicator, and the elastic member abuts against a second end opposite to the indicator.

5. The indicator assembly according to claim 4, characterized in that The first indicating portion is arranged at a distal end of the second indicating portion.

6. The indicator assembly according to claim 1, characterized in that The driving assembly includes a driving member, the driving member includes a driving portion, and the stopping member includes a pivoting portion, a first stopping portion, and a second stopping portion; When the nail magazine is fired, the driving part moves toward the distal direction, and the driving part drives the first stop part to move in the direction away from the central axis of the first shell, and the second stop part moves in the direction close to the central axis of the first shell and no longer blocks the movement of the indicator along the first direction.

7. The indicator assembly according to claim 6, characterized in that The indicator includes a supporting portion, and the supporting portion is provided with an inclined guide surface on the side facing the central axis of the first shell; when the drive assembly moves in the distal direction, the second stop portion moves in the direction close to the central axis of the first shell under the guidance of the guide surface.

8. A staple cartridge assembly, comprising: A slender body and a tool assembly, wherein the slender body includes a proximal portion and a distal portion, and the tool assembly is arranged at the distal portion, characterized in that the proximal portion includes the indication assembly according to any one of claims 1 to 7.

9. A surgical stapler, characterized in that: The invention comprises the staple cartridge assembly described in claim 8.

10. The surgical stapler according to claim 9, characterized in that The surgical stapler includes a handle portion and a connecting portion extending from the handle portion, wherein the connecting portion is used for detachable connection with the proximal portion.

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