Auxiliary piece assembly and surgical anastomat

Abstract

The invention provides an auxiliary piece assembly and a surgical anastomat, and the auxiliary piece assembly comprises an auxiliary piece box which is installed at the far end of a forceps clip, and a cavity is formed in the auxiliary piece box; the auxiliary piece comprises an auxiliary piece body, the auxiliary piece has a first state and a second state, when the auxiliary piece is in the first state, at least part of the auxiliary piece body is located in the auxiliary piece box, and when the auxiliary piece is in the second state, at least part of the auxiliary piece body covers the surface of the forceps holder. At least part of the auxiliary sheet is arranged in the auxiliary sheet box at the far end of the forceps clip, the auxiliary sheet body covers the surface of the forceps clip during use, the structure is simple, and use and storage are convenient.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and particularly relates to an auxiliary sheet assembly and a surgical stapler. Background Art

[0002] In the prior art, a surgical stapler includes a stapler body, an operating handle movably connected to the stapler body, and a clamping assembly cooperating with the distal end of the body. The stapler body includes a firing assembly, and the clamping assembly includes a cartridge assembly and an anvil disposed opposite to each other. During a surgical procedure, tissue is placed between the anvil and the cartridge of the cartridge assembly, the distance between the anvil and the cartridge is adjusted to gradually clamp the tissue, and then the firing assembly is moved distally by operating the handle to push the staples in the cartridge towards the anvil, so that the staples are formed on the anvil to complete the anastomosis of the tissue.

[0003] When using a stapler, an auxiliary sheet can be provided on the surface of the cartridge. During surgery, the auxiliary sheet can be stapled to the tissue together with the staples to reinforce and strengthen the anastomotic site. The existing auxiliary sheet and the cartridge are often two separate components, which are separately arranged during transportation and storage and the auxiliary sheet is installed on the surface of the cartridge during use. The structure is complex and it is very inconvenient to use. Summary of the Invention

[0004] Aiming at the problems in the prior art, the purpose of the present application is to provide an auxiliary sheet assembly and a surgical stapler, wherein the auxiliary sheet is at least partially disposed in an auxiliary sheet box at the distal end of the cartridge. During use, the auxiliary sheet body only needs to cover the clamping surface, with a simple structure and convenient use and storage.

[0005] An embodiment of the present application provides an auxiliary sheet assembly, which is characterized in that it is disposed on the clamping part of a surgical stapler, and the auxiliary sheet assembly includes:

[0006] An auxiliary sheet box, which is installed at the distal end of the clamping part, and a cavity is formed inside the auxiliary sheet box;

[0007] An auxiliary sheet, the auxiliary sheet includes an auxiliary sheet body, the auxiliary sheet has a first state and a second state. When the auxiliary sheet is in the first state, at least part of the auxiliary sheet body is located inside the auxiliary sheet box. When the auxiliary sheet is in the second state, at least part of the auxiliary sheet body covers the surface of the clamping part.

[0008] In some embodiments, an opening is provided on one side of the proximal end of the auxiliary sheet box, the auxiliary sheet further includes an operating part, the operating part is connected to the first end of the auxiliary sheet body, and the auxiliary sheet passes through the opening of the auxiliary sheet box so that at least part of the operating part is located outside the cavity of the auxiliary sheet box.

[0009] In some embodiments, at least one first fixing portion is provided at a first end of the auxiliary sheet body, at least one first fixing member is provided at a proximal end of the clamp, and when the auxiliary sheet is in the second state, the first fixing portion of the auxiliary sheet body is connected to the first fixing member.

[0010] In some embodiments, the first fixing portion of the auxiliary sheet body is a fixing groove, and the first fixing member is a protrusion protruding from the surface of the clamp; or, the first fixing portion of the auxiliary sheet body is a protrusion facing the clamp, and the first fixing member is a fixing groove.

[0011] In some embodiments, at least a part of the auxiliary sheet body is elastic, and the first fixing portion of the auxiliary sheet body is a fixing groove;

[0012] An installation groove is provided at the proximal end of the clamp. The first fixing member includes a fitting portion, a clamping portion, and a stopping portion. The fitting portion is embedded in the installation groove. The clamping portion is connected between the fitting portion and the stopping portion, and the size of the clamping portion is smaller than the size of the stopping portion.

[0013] In some embodiments, when the auxiliary sheet is in the first state, a part of the auxiliary sheet body located inside the auxiliary sheet box is wound into a scroll shape.

[0014] In some embodiments, the auxiliary sheet further includes a second fixing portion. The second fixing portion is connected to a second end of the auxiliary sheet body, and the second fixing portion is fixed inside the auxiliary sheet box.

[0015] In some embodiments, a roller and a fixed shaft are further provided inside the cavity of the auxiliary sheet box. The roller is sleeved outside the fixed shaft and is rotatable relative to the fixed shaft. The fixed shaft is fixed to the auxiliary sheet box. The second fixing portion of the auxiliary sheet is fixed to the roller. When the auxiliary sheet is in the first state, a part of the auxiliary sheet body located inside the auxiliary sheet box is wound around the roller to form a scroll shape.

[0016] In some embodiments, a pin shaft is provided inside the cavity of the auxiliary sheet box. The pin shaft is rotatable relative to the auxiliary sheet box. The second fixing portion of the auxiliary sheet is fixed to the pin shaft; or, the second fixing portion of the auxiliary sheet is curled to form a pin shaft;

[0017] When the auxiliary sheet is in the first state, a part of the auxiliary sheet body located inside the auxiliary sheet box is wound around the pin shaft to form a scroll shape.

[0018] In some embodiments, a cavity is formed between the pin shaft and the inner wall of the auxiliary sheet box.

[0019] In some embodiments, when the auxiliary sheet is in the first state, a part of the auxiliary sheet body located inside the auxiliary sheet box is folded into a multi-layer structure.

[0020] In some embodiments, the stacking direction of the multi-layer structure is parallel to or perpendicular to the axial direction of the stapler.

[0021] In some embodiments, it further includes a mounting member disposed inside the auxiliary sheet cassette. The auxiliary sheet further includes a second fixing portion fixed to the mounting member. When the auxiliary sheet enters the second state from the first state, the mounting member moves from the distal end of the auxiliary sheet cassette to the proximal end of the auxiliary sheet cassette along with the second fixing portion.

[0022] In some embodiments, the auxiliary sheet further includes a second fixing portion located inside the auxiliary sheet cassette. The auxiliary sheet assembly further includes:

[0023] A cutting member, at least partially located on the proximal side of the second fixing portion of the auxiliary sheet. The cutting member has a third state and a fourth state. When the cutting member is in the third state, the cutting member is located on one side of the second end of the auxiliary sheet body and has a certain gap from the second end of the auxiliary sheet body in a first direction.

[0024] A driving member fixed to the cutting member and configured to drive the cutting member to move in the first direction from the third state to the fourth state. The first side of the cutting member cuts the second end of the auxiliary sheet body so that the second fixing portion is separated from the auxiliary sheet body.

[0025] In some embodiments, at least a part of the driving member protrudes from the proximal end of the auxiliary sheet cassette. A firing block is further provided inside the clamp. When the firing block is configured to abut against the driving member and move in the distal direction, the cutting member is driven to move in the first direction through the driving member.

[0026] In some embodiments, when the cutting member is in the fourth state, the first side of the cutting member abuts against the inner wall surface of the auxiliary sheet cassette.

[0027] In some embodiments, the auxiliary sheet cassette includes an auxiliary sheet cassette cover and an auxiliary sheet cassette seat that can be at least partially separated from each other. The cavity is formed between the auxiliary sheet cassette cover and the auxiliary sheet cassette seat.

[0028] In some embodiments, the proximal height of the auxiliary sheet cassette is greater than the distal height of the auxiliary sheet cassette, so that at least one surface of the auxiliary sheet cassette forms an inclined guiding surface.

[0029] In some embodiments, a second fixing member is further provided at the distal end of the clamp. When the auxiliary sheet is in the first state, the first fixing portion of the auxiliary sheet body is connected to the second fixing member.

[0030] In some embodiments, a cutter is further disposed inside the clamp, and the cutter moves along a cutter groove of the clamp;

[0031] When the auxiliary piece is in the second state, a dotted line corresponding to the position of the cutter groove is provided on the auxiliary piece body; and / or, a separation groove is provided at the distal end of the auxiliary piece body. When the cutter moves to the distal end of the cutter groove, at least a part of the cutter is located in the separation groove.

[0032] In some embodiments, a mounting portion is provided at the proximal end of the auxiliary piece box, and the auxiliary piece box is detachably disposed at the distal end of the clamp through the mounting portion.

[0033] In some embodiments, the auxiliary piece box is rotatably connected to the distal end of the clamp through the mounting portion.

[0034] In some embodiments, an eagle beak portion that bends upward in an eagle beak shape is provided at the distal end of the auxiliary piece box.

[0035] An embodiment of the present application further provides a surgical stapler, including the auxiliary piece assembly described above.

[0036] The auxiliary piece assembly and the surgical stapler provided by the present application have the following advantages:

[0037] By adopting the present application, the auxiliary piece is at least partially disposed in the auxiliary piece box at the distal end of the clamp. When not in use, the auxiliary piece is in the first state of being partially received in the auxiliary piece box, which is convenient for storage. When in use, the surface of the clamp can be covered by the auxiliary piece body. The structure is simple and the use is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] By reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings, other features, objects, and advantages of the present application will become more apparent.

[0039] Figure 1 is a schematic structural view of the staple head according to the first embodiment of the present application;

[0040] Figure 2 is a front view of the cooperation between the staple head and the auxiliary piece assembly according to the first embodiment of the present application;

[0041] Figure 3 is a schematic view of the cooperation between the staple head and the auxiliary piece assembly according to the first embodiment of the present application;

[0042] Figure 4 is a schematic structural view of the auxiliary piece assembly according to the first embodiment of the present application;

[0043] Figure 5 is a schematic view of the auxiliary piece box in a perspective state according to the first embodiment of the present application;

[0044] Figure 6 isFigure 5 Enlarged view of part A;

[0045] Figure 7 Schematic diagram of the staple cartridge assembly and the auxiliary sheet assembly of the first embodiment of the present application;

[0046] Figure 8 Exploded view of the staple cartridge assembly and the auxiliary sheet assembly of the first embodiment of the present application;

[0047] <000|| Figure 9 Schematic diagram of the staple cartridge in a perspective state of the first embodiment of the present application, with the auxiliary sheet in a stored state;

[0048] Figure 10 Schematic diagram of the staple cartridge assembly of the first embodiment of the present application, with the auxiliary sheet in an unfolded state;

[0049] Figure 11 Perspective view of the staple cartridge assembly of the first embodiment of the present application, with the auxiliary sheet in an unfolded state;

[0050] Figure 12 Partial exploded view of the staple cartridge assembly of the first embodiment of the present application;

[0051] Figure 13 Schematic diagram of the structure of the first fixing member of the first embodiment of the present application;

[0052] Figure 14 Schematic diagram of the cutting member separating the auxiliary sheet body of the first embodiment of the present application;

[0053] Figure 15 Schematic diagram of the staple cartridge assembly after firing of the first embodiment of the present application;

[0054] Figure 16 Exploded view of the staple cartridge assembly of the second embodiment of the present application;

[0055] Figure 17 Perspective view of the staple cartridge assembly of the second embodiment of the present application;

[0056] Figure 18 Schematic diagram of the cooperation between the auxiliary sheet box and the auxiliary sheet of the third embodiment of the present application;

[0057] Figure 19 Schematic diagram of the cooperation between the auxiliary sheet assembly and the staple cartridge assembly after the auxiliary sheet is pulled out in the fourth embodiment of the present application;

[0058] Figure 20 Schematic diagram of the cooperation between the auxiliary sheet and the second fixing member in the fourth embodiment of the present application;

[0059] Figure 21 [[ID=6||

[0060] Figure 22 ​is a perspective view of the auxiliary sheet assembly after the auxiliary sheet is pulled out in the fifth embodiment of the present application;

[0061] Figure 23 is a schematic diagram of the perspective state of the auxiliary sheet cassette in the sixth embodiment of the present application;

[0062] Figure 24 is a schematic diagram of the cooperation between the auxiliary sheet cassette and the staple cartridge in the seventh embodiment of the present application.

[0063] Reference numerals:

[0064] 1 Staple cartridge 55 Dash-dotted line

[0065] 11 Staple cartridge surface 56 Separation groove

[0066] 12 Staple holes 61 Roller

[0067] 13 Cutter groove 62 Fixed shaft

[0068] 14 Installation groove 7 Auxiliary sheet cassette

[0069] 2 Staple cartridge holder 71 Auxiliary sheet cassette cover

[0070] 31 Firing block 711 Opening

[0071] 32 Pusher block 712 Guide surface

[0072] 41 First fixing member 713 Mounting portion

[0073] 411 Fitting portion 7131 Slit

[0074] 412 Clamping portion 714 Slide groove

[0075] 413 Stopping portion 715 Eagle beak portion

[0076] 42 Second fixing member 72 Auxiliary sheet cassette seat

[0077] 421 Card slot 73 Mounting member

[0078] 5 Auxiliary sheet 731 Sliding portion

[0079] 51 Operating portion 81 Cutting member

[0080] 52 First fixing portion 82 Driving member

[0081] 53 Second fixing portion 821 Driving surface

[0082] 54 Auxiliary sheet body 9 Anvil Detailed implementation manners

[0083] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in various 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 thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. Like reference numerals in the figures denote like or similar structures, and thus their repetitive description will be omitted. The terms "or" and "or" in the specification may mean "and" or "or". Although the terms "upper", "lower", "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, for example, 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 the present application. Although the terms "first" or "second" etc. are used in this specification to denote certain features, they are only for the purpose of indication and do not limit the quantity and importance of the specific features.

[0084] The present application provides an auxiliary sheet assembly and a surgical stapler including the auxiliary sheet assembly. The surgical stapler further includes a clamping assembly and a stapler body disposed at the proximal end of the clamping assembly, and the clamping assembly includes a first clamp and a second clamp disposed opposite to each other. The auxiliary sheet assembly includes an auxiliary sheet box and an auxiliary sheet at least partially disposed in a cavity of the auxiliary sheet box, and the auxiliary sheet box is disposed at the distal end of the first clamp and / or the second clamp. The auxiliary sheet includes an auxiliary sheet body, and the auxiliary sheet has a first state and a second state. When the auxiliary sheet is in the first state, the auxiliary sheet body is at least partially received in the auxiliary sheet box. When the auxiliary sheet is in the second state, the auxiliary sheet body at least partially covers the surface of the clamp.

[0085] By adopting the present application, the auxiliary sheet is at least partially disposed in the auxiliary sheet box at the distal end of the clamp. When not in use, the auxiliary sheet is in the first state, and the auxiliary sheet body is at least partially located inside the auxiliary sheet box. At this time, the auxiliary sheet is in a received state, which is convenient for storage. When in use, the auxiliary sheet enters the expanded second state, and the auxiliary sheet body covers the surface of the clamp. When the stapler is fired, the part of the auxiliary sheet body covering the surface of the clamp can be stapled to the tissue together with the staples. The structure is simple and the use is convenient.

[0086] The following will introduce in detail the structure of the auxiliary sheet assembly of each specific embodiment of the present application with reference to the accompanying drawings. It can be understood that each specific embodiment does not limit the protection scope of the present application.

[0087] Figures 1 - 5Schematic structural diagram of the clamping assembly according to the first embodiment of the present application. The clamping assembly includes a first clamp and a second clamp arranged opposite to each other and an auxiliary sheet assembly. In this embodiment, the first clamp is a staple cartridge assembly, and the second clamp is an anvil 9. The staple cartridge assembly includes a staple cartridge 1 for accommodating anastomosis staples, a staple cartridge holder 2 for accommodating the staple cartridge 1, and a firing block 31. The proximal ends of the staple cartridge holder 2 and the anvil 9 are rotatably connected by a pin shaft so that the jaws between the staple cartridge assembly and the anvil 9 can be opened or closed. As Figure 7 shown, the side of the staple cartridge 1 facing the anvil 9 is a staple cartridge surface 11. A plurality of staple holes 12 are formed on the staple cartridge surface 11, and an axial cutter groove 13 is formed in the staple cartridge 1. A cutter (not shown in the figure) can be driven to move axially along the cutter groove 13. In the initial state, the firing blocks 31 are all located at the proximal end of the staple cartridge 1, the cutter is located on the proximal side of the firing block 31, the anastomosis staples are hidden inside the staple holes 12, and a pusher block 32 is provided below the anastomosis staples (shown in Figure 9 ). When the stapler is fired, the operator drives the firing assembly inside the stapler by holding the operating handle. The firing assembly drives the cutter to move in the distal direction, drives the firing block 31 to move in the distal direction, and the firing block 31 drives the pusher block 32 inside the staple cartridge 1 to push the anastomosis staples outwards. The anastomosis staples are formed on the surface of the anvil 9 to suture the tissue, and at the same time, the cutter cuts the tissue to complete the suturing and cutting of the tissue.

[0088] In the present 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. The axial direction refers to the axial direction of the staple cartridge assembly, that is, the extending direction of the staple cartridge assembly, that is, the left-right direction in the perspective of Figure 2 . In the perspective of Figure 2 , for the staple cartridge 1, its distal end is the left end and its proximal end is the right end.

[0089] As Figures 3 - 8As shown, the auxiliary sheet assembly includes an auxiliary sheet box 7 installed at the distal end of the staple cartridge 1 and an auxiliary sheet 5 at least partially disposed in the auxiliary sheet box 7. The overall appearance of the auxiliary sheet box 7 is adapted to the shape of the distal end of the staple cartridge 1. The auxiliary sheet box 7 can be non-removably connected or removably connected to the distal end of the staple cartridge 1. For example, the auxiliary sheet box 7 can be fixedly installed at the distal end of the staple cartridge 1 or detachably installed at the distal end of the staple cartridge 1 through the mounting portion 713 at the proximal end, so that it can be flexibly determined whether to install the auxiliary sheet box 7 at the distal end of the staple cartridge 1 according to the operator's usage needs. A hollow cavity for accommodating the auxiliary sheet 5 is formed inside the auxiliary sheet box 7, and an opening 711 is provided on one side of the auxiliary sheet box 7 facing the staple cartridge 1, and the opening 711 communicates the cavity with the outside. The auxiliary sheet 5 includes an auxiliary sheet body 54 and an operation portion 51 connected to the first end of the auxiliary sheet body 54. The auxiliary sheet 5 has a first state ( Figures 5 - 9 the state shown), and a second state ( Figure 10 and Figure 11 the state shown). As Figures 5 - 9 shown, in the initial state, the auxiliary sheet 5 is in the first state, and at least a part of the auxiliary sheet body 54 is received in the cavity of the auxiliary sheet box 7. At this time, the auxiliary sheet 5 is in a received state, which is convenient for storage. As Figure 5 and Figure 6 shown, the outer surfaces of the auxiliary sheet box 7 are all smooth surfaces. The height of the proximal end of the auxiliary sheet box 7 is greater than the height of the distal end of the auxiliary sheet box 7, so that at least one surface of the auxiliary sheet box 7 forms an inclined guiding surface. Therefore, the auxiliary sheet box 7 can not only be used to store the auxiliary sheet 5, but also serve as the distal end eagle beak guiding portion of the staple cartridge 1 to guide the staple cartridge 1 to reach the surgical position more easily. Figure 6 Exemplarily shown in Figure 6 is that the upper surface of the auxiliary sheet box 7 is formed as an inclined guiding surface 712. In other embodiments, the lower surface of the auxiliary sheet box 7 or both the upper surface and the lower surface can also be formed as inclined guiding surfaces. The guiding surface can be an inclined plane or an inclined curved surface. Or, when the auxiliary sheet box 7 does not need to play a guiding role, the upper and lower surfaces of the auxiliary sheet box 7 can also be flat surfaces respectively.

[0090] As Figure 7 and Figure 9 shown, when the auxiliary sheet 5 is in the first state, the auxiliary sheet body 54 passes through the opening 711, so that the operation portion 51 of the auxiliary sheet 5 is exposed outside the cavity. Since the auxiliary sheet 5 itself has a certain flexibility, the operation portion 511 of the auxiliary sheet 5 can be placed above the distal end of the staple cartridge 1. When the auxiliary sheet 5 needs to be used, the operator can hold the operation portion 51 and pull the auxiliary sheet body 54 outwards, so that the auxiliary sheet body 54 is unfolded and enters the second state. As Figure 10As shown, when the auxiliary sheet 5 is in the second state, the auxiliary sheet body 54 at least partially covers the staple cartridge surface 11 of the staple cartridge 1. Optionally, the auxiliary sheet body 54 may cover all the staple holes 12 on the staple cartridge surface 11, but the present application is not limited thereto. When the auxiliary sheet 5 is in the second state, the operating handle of the stapler can be driven to fire the stapler, and the auxiliary sheet body 54 can be stapled to the tissue together with the staple. The auxiliary sheet 5 can be a soft biological patch or made of other biocompatible and soft materials, which can play a role in strengthening and reinforcing the anastomosis, and drugs with anti-inflammatory, hemostatic or other medical effects can be further coated on the surface of the auxiliary sheet 5 to achieve an auxiliary medical effect.

[0091] As Figures 7 - 9 shown, the auxiliary sheet cassette 7 includes an auxiliary sheet cassette cover 71 and an auxiliary sheet cassette base 72 that can be at least partially separated from each other, and the cavity is formed between the auxiliary sheet cassette cover 71 and the auxiliary sheet cassette base 72. The auxiliary sheet cassette cover 71 and the auxiliary sheet cassette base 72 can be snap-connected to each other, or the distal ends of the auxiliary sheet cassette cover 71 and the auxiliary sheet cassette base 72 can be rotatably connected, so that the auxiliary sheet cassette cover 71 and the auxiliary sheet cassette base 72 can be opened relatively, which is convenient for putting the whole auxiliary sheet 5 into the cavity of the auxiliary sheet cassette 7 and for subsequent replacement of the auxiliary sheet 5.

[0092] As Figures 10 - 12 shown, at least one first fixing portion 52 is provided at the first end of the auxiliary sheet body 54, and at least one first fixing member 41 is provided at the proximal end of the staple cartridge 1. When the auxiliary sheet 5 is in the second state, the first fixing portion 52 of the auxiliary sheet body 54 is connected to the first fixing member 41, and the unfolded auxiliary sheet body 54 can be fixed to the staple cartridge surface 11. In this embodiment, at least a part of the auxiliary sheet body 54 is elastic, and the first fixing portion 52 of the auxiliary sheet body 54 is a fixing groove. An installation groove 14 is provided at the proximal end of the staple cartridge surface 11, and the first fixing member 41 is a protrusion protruding from the staple cartridge surface 11, and the protrusion is installed in the installation groove 14. By using the elasticity of the groove wall of the fixing groove of the auxiliary sheet body 54, the first end of the auxiliary sheet body 54 can be sleeved on the first fixing member 41 to realize the fixation of the auxiliary sheet body 54 to the proximal end of the staple cartridge 1.

[0093] As Figure 12 and Figure 13As shown, the first fixing member 41 includes a fitting portion 411, a clamping portion 412, and a stopping portion 413. The fitting portion 411 is embedded in the mounting groove 14. The clamping portion 412 is connected between the fitting portion 411 and the stopping portion 413, and the size of the clamping portion 412 is smaller than that of the stopping portion 413. Here, the size of the clamping portion 412 being smaller than that of the stopping portion 413 may mean that the transverse width of the clamping portion 412 is smaller than the transverse width of the stopping portion 413, and / or the axial length of the clamping portion 412 is smaller than the axial length of the stopping portion 413. This can enable the fixing groove of the auxiliary sheet body 54 to be sleeved on the outer periphery of the clamping portion 412 and be blocked by the stopping portion 413, so that it will not easily separate from the staple cartridge 1, ensuring that during the surgical preparation process, the auxiliary sheet body 54 covers the staple cartridge surface 11 without accidental detachment. When the stapler is fired, under the pulling force of the staples, due to the certain elasticity of the groove wall of the fixing groove, the fixing groove of the auxiliary sheet body 54 can be separated from the first fixing member 41, causing the first end of the auxiliary sheet body 54 to be separated from the proximal end of the staple cartridge 1.

[0094] In another embodiment, the first fixing portion of the auxiliary sheet body 54 can also be an elastic protrusion facing the staple cartridge surface 11, and the first fixing member is a fixing groove. When the auxiliary sheet 5 is in the second state, the elastic protrusion is inserted into the fixing groove, and the two are in interference fit. When the stapler is fired, under the action of the staples, the elastic protrusion disengages from the fixing groove.

[0095] As Figure 8 As shown, the auxiliary sheet 5 further includes a second fixing portion 53. The second fixing portion 53 is connected to the second end of the auxiliary sheet body 54 and is fixed inside the auxiliary sheet cassette 7, ensuring that when the auxiliary sheet 5 is pulled out and enters the second state, the distal end of the auxiliary sheet 5 will still not separate from the auxiliary sheet cassette 7. In this embodiment, the second fixing portion 53, the auxiliary sheet body 54, and the operating portion 51 are integrally formed. In other embodiments, the materials of the second fixing portion 53 and / or the operating portion 51 can also be different from that of the auxiliary sheet body 54, and they are fixedly connected to the end of the auxiliary sheet body 54.

[0096] As Figures 7 - 9As shown, a roller 61 and a fixed shaft 62 are further provided inside the cavity of the auxiliary sheet cassette 7. The roller 61 is sleeved outside the fixed shaft 62 and is rotatable relative to the fixed shaft 62. Both ends of the fixed shaft 62 are fixed to the side wall of the auxiliary sheet cassette 7, so that the fixed shaft 62 is non-rotatable relative to the auxiliary sheet cassette 7. The second fixing portion 53 of the auxiliary sheet 5 is fixed to the roller 61. When the auxiliary sheet 5 is in the first state, the portion of the auxiliary sheet body 54 located inside the auxiliary sheet cassette 7 is wound around the roller 61 to form a scroll shape. When the auxiliary sheet 5 needs to be used, when the operator holds the operation portion 51 and pulls out the auxiliary sheet body 54 outward, the scroll-shaped portion of the auxiliary sheet body 54 gradually unfolds and covers the staple cartridge surface 11, reaching Figure 11 the state shown. When the first end of the auxiliary sheet body 54 is fixed to the first fixing member 41, the second fixing portion 53 of the auxiliary sheet 5 is still fixed outside the roller 61 to keep the whole auxiliary sheet body 54 laid flat on the staple cartridge surface 11. In this embodiment, by winding the auxiliary sheet body 54 into a scroll shape during storage, on the one hand, the space volume occupied by the auxiliary sheet body 54 during storage can be reduced, and on the other hand, the pulling out of the auxiliary sheet body 54 during use can be made smoother, and the auxiliary sheet body 54 can be laid more flatly on the staple cartridge surface 11. In another embodiment, a pin shaft can be directly provided inside the cavity of the auxiliary sheet cassette 7. The pin shaft is rotatable relative to the auxiliary sheet cassette 7. The second fixing portion 53 of the auxiliary sheet 5 is fixed to the pin shaft. When the auxiliary sheet 5 is in the first state, the portion of the auxiliary sheet body 54 located inside the auxiliary sheet cassette 7 is wound around the pin shaft to form a scroll shape. A cavity is formed between the pin shaft and the inner wall of the auxiliary sheet cassette 7 to leave sufficient space for the auxiliary sheet body 54, so that when the auxiliary sheet body 54 is pulled out outward, it can rotate relative to the auxiliary sheet cassette 7 together with the pin shaft. In still another embodiment, the second fixing portion 53 of the auxiliary sheet can be directly curled to form a pin shaft without adding other parts. When the auxiliary sheet 5 is in the first state, the portion of the auxiliary sheet body 54 located inside the auxiliary sheet cassette 7 is wound around the second fixing portion 53 to form a scroll shape. A cavity is formed between the pin shaft and the inner wall of the auxiliary sheet cassette 7 to leave sufficient space for the auxiliary sheet body 54, so that when the auxiliary sheet body 54 is pulled out outward, it can rotate relative to the auxiliary sheet cassette 7 together with the second fixing portion 53, and the wall thickness of the second fixing portion 53 can be set to be thicker than that of the auxiliary sheet body 54, so that the second fixing portion 53 will not be pulled out outward from the opening 711 of the auxiliary sheet cassette 7 and can always remain inside the auxiliary sheet cassette 7.

[0097] In this embodiment, in order to achieve the separation of the second end of the auxiliary sheet body 54 from the auxiliary sheet box 7 during the firing of the stapler, so that the auxiliary sheet body 54 can be integrally stapled to the tissue with the staples, a cutting member 81 and a driving member 82 are further provided inside the cavity of the auxiliary sheet box 7. The cutting member 81 can cut the position where the second end of the auxiliary sheet body 54 is connected to the second fixing portion 53, so that the auxiliary sheet body 54 is separated from the second fixing portion 53 and then separated from the auxiliary sheet box 7. As Figure 8 and Figure 9 shown, at least a part of the cutting member 81 is located on the proximal side of the second fixing portion 53 of the auxiliary sheet 5. The cutting member 81 has a third state (shown in Figure 9 and Figure 11 ) and a fourth state (shown in Figure 14 and Figure 15 ). Among them, when the cutting member 81 is in the third state, the cutting member 81 is located on one side of the second end of the auxiliary sheet body 54 and has a certain gap with the second end of the auxiliary sheet body 54 in the first direction D1. In this embodiment, the first direction D1 is the direction pointing to the anvil 9 along the longitudinal direction, that is, Figure 14 the upward direction in. The driving member 82 is fixed to the cutting member 81, and a driving surface 821 is provided at the proximal end of the driving member 82. As Figure 4 shown, a slit 7131 is provided at the proximal end of the auxiliary sheet box 7, and the proximal end of the driving member 82 passes through the slit 7131 and protrudes from the proximal end of the auxiliary sheet box 7. When the auxiliary sheet box 7 is docked with the distal end of the staple cartridge 1, at least a part of the driving member 62 enters the inside of the staple cartridge 1.

[0098] When the stapler is not fired, the firing block 31 is at the proximal end of the staple cartridge 1. As Figure 9 and Figure 11 shown, the cutting member 81 is in the third state, and the first side of the cutting member 81 is located directly below the second end of the auxiliary sheet body 54 and does not contact the auxiliary sheet 5. During the firing of the stapler, the firing block 31 is driven to move from the proximal end to the distal end direction, and the staples drive the auxiliary sheet body 54 covering above them to be stapled to the tissue together. As Figure 14 shown, after the firing block 31 moves to the distal end and abuts against the driving surface 821 of the driving member 82, the firing block 31 continues to move in the distal end direction and gives a driving force in the distal end direction to the driving member 82. Under the action of the inclined driving surface 821, this driving force is converted into a driving force upward, so that the driving member 82 drives the cutting member 81 to move upward along the first direction D1 to cut the second end of the auxiliary sheet body 54. The first side of the cutting member 81 is formed into a sharp blade shape, which is easier to cut the auxiliary sheet body 54 and the second fixing portion 53. The auxiliary sheet body 54 can be integrally separated from the auxiliary sheet box 7, and thus it will not affect the separation of the staple cartridge assembly from the anastomosed tissue.

[0099] As Figure 15 shown, when the cutting member 81 is in the fourth state, the first side of the cutting member 81 abuts against the upper inner wall surface of the auxiliary sheet cassette 7, and the upper inner wall surface of the auxiliary sheet cassette 7 limits the portion of the auxiliary sheet 5 to be cut, so that the second end of the auxiliary sheet body 54 is more easily cut, and the cutting member 81 will never be exposed outside the auxiliary sheet cassette 7, so that the tissue will not be damaged. After the stapler is fired, the second fixing portion 53 remains in the auxiliary sheet cassette 7. If a new auxiliary sheet 5 needs to be replaced, the auxiliary sheet cassette cover 71 and the auxiliary sheet cassette seat 72 can be at least partially separated, the remaining second fixing portion 53 can be taken out, and a new auxiliary sheet reel can be put in.

[0100] In other alternative embodiments, the cutting member 81 and the driving member 82 may not be provided. The second fixing portion 53 of the auxiliary sheet 5 and the roller 61 may be detachably connected. When the stapler is fired, under the pulling action of the staples, the second fixing portion 53 is separated from the roller 61 and is stapled to the tissue together. Or, a dotted line in the width direction is provided between the second fixing portion 53 and the second end of the auxiliary sheet body 54. When the stapler is fired, under the pulling action of the staples, the dotted line between the second fixing portion 53 and the second end of the auxiliary sheet body 54 is torn, so that the auxiliary sheet body 54 is separated from the second fixing portion 53.

[0101] Figure 16 and Figure 17 is a schematic structural diagram of the cartridge assembly according to the second embodiment of the present application. The difference between this embodiment and the previous embodiment is that: a second fixing member 42 is further provided at the distal end of the cartridge 1. When the auxiliary sheet 5 is in the first state, the first fixing portion 52 of the auxiliary sheet body 54 is connected to the second fixing member 42, so that when the auxiliary sheet 5 is in the first state, the operating portion 51 of the auxiliary sheet 5 is kept outside the cavity of the auxiliary sheet cassette 7 and will not retract into the cavity. The second fixing member 42 may adopt the same structure as the first fixing member 41. Or, both the first fixing member 41 and the second fixing member 42 may be replaced with fixing grooves. The first fixing portion 52 of the auxiliary sheet 5 is an elastic protrusion. When the auxiliary sheet 5 is in the first state, the elastic protrusion is inserted into the fixing groove at the distal end of the cartridge 1. After the auxiliary sheet 5 is unfolded and enters the second state, the elastic protrusion is inserted into the fixing groove at the proximal end of the cartridge 1.

[0102] In other alternative embodiments, other methods can also be adopted to prevent the operating portion 51 of the auxiliary sheet 5 from retracting into the cavity. For example, in an alternative embodiment, the size of the opening 711 of the auxiliary sheet cassette 7 is slightly larger than the thickness of the auxiliary sheet body 54, and the thickness of the operating portion 51 of the auxiliary sheet 5 is set to be larger than the size of the opening 711 of the auxiliary sheet cassette 7, so that the operating portion 51 of the auxiliary sheet 5 is stuck at the opening 711 and will not retract into the cavity. Alternatively, in another alternative embodiment, the size of the opening 711 of the auxiliary sheet cassette 7 is slightly smaller than the thickness of the auxiliary sheet body 54, and the auxiliary sheet body 54 itself is stuck in the opening 711 and its position relative to the opening 711 will not change unless an outward pulling force is applied.

[0103] In the above embodiments, the case where the auxiliary sheet 5 is stored in the auxiliary sheet cassette 7 in the form of a reel in the first state is taken as an example for illustration. In Figure 18 In the third embodiment shown, the auxiliary sheet body 54 is not formed into a reel shape. Instead, when the auxiliary sheet 5 is in the first state, the auxiliary sheet body 54 of the auxiliary sheet 5 is folded into a multi-layer structure, and the second fixing portion 53 of the auxiliary sheet 5 is fixed to the inner wall of the auxiliary sheet cassette 7. In this embodiment, by folding the auxiliary sheet 5 into a regular multi-layer structure, the stacking direction of the multi-layer structure is parallel to the longitudinal direction of the stapler, that is, perpendicular to the axial direction of the stapler, and the second fixing portion 53 is fixed to the bottom wall of the auxiliary sheet cassette 7, so that when the auxiliary sheet body 54 is drawn out, it is drawn out sequentially from top to bottom, which can make the drawing of the auxiliary sheet body 54 smoother during use and make the laying of the auxiliary sheet body 54 on the staple cartridge surface 11 more flat. The cooperation structure of other components in this embodiment can be the same as that in the previous embodiments and will not be elaborated here. In other alternative embodiments, the auxiliary sheet body 54 can also be stored in the auxiliary sheet cassette 7 in other folding forms, stacking forms or extrusion forms.

[0104] Figure 19 and Figure 20 shows the structure of the auxiliary sheet assembly cooperating with the staple cartridge in the fourth embodiment of the present application. The difference between this embodiment and the first embodiment is that as Figure 19As shown, the auxiliary sheet body 54 is provided with dotted lines 55. When the auxiliary sheet 5 is in the second state, the position of the dotted lines 55 corresponds to that of the cutter groove 13, that is, the projection of the dotted lines 55 on the cartridge surface of the staple cartridge coincides with at least a part of the cutter groove 13. A separation groove 56 is provided at the distal end of the auxiliary sheet body 54. When the stapler is fired, when the cutter moves to the distal end of the cutter groove 13, at least a part of the cutter is located in the separation groove 56, so that the distal end of the auxiliary sheet body 54 can also be completely cut. And, in this embodiment, a cutting member is respectively provided below the distal end of the separation groove 56. When the cutting member is driven by the firing block to move upward to cut the auxiliary sheet 5, the auxiliary sheet body 54 can be completely divided into two pieces as a whole and stapled to the tissue together with the staples. As Figure 20 shown, a second fixing member 42 is provided at the proximal end of the staple cartridge. The first fixing portion 52 of the auxiliary sheet body 54 is a hollow pull ring. When the auxiliary sheet 5 is in the first state, the pull ring is fixed to the second fixing member 42, and the stability of the fixation of the first fixing portion 52 can be further maintained through the card slot 421 of the second fixing member 42.

[0105] Figure 21 and Figure 22 FIG. shows the structure of the cooperation between the auxiliary sheet assembly and the staple cartridge according to the fifth embodiment of the present application. The difference between this embodiment and the first embodiment is that when the auxiliary sheet 5 is in the first state, the auxiliary sheet body 54 of the auxiliary sheet 5 is folded into a multi-layer structure and then arranged in the auxiliary sheet box 7, and the stacking direction of the multi-layer structure is parallel to the axis of the stapler, so that when the auxiliary sheet 5 enters the second state from the first state, it can be sequentially drawn out from the proximal end to the distal end along the axis, and the auxiliary sheet 5 can be laid more flatly on the cartridge surface of the staple cartridge 1. The second fixing portion 53 of the auxiliary sheet 5 is fixed to an installation member 73. The installation member 73 is arranged inside the auxiliary sheet box 7 and can move axially relative to the auxiliary sheet box 7. In this embodiment, a chute 714 extending axially is provided on the inner wall of the auxiliary sheet box cover 71, and a sliding portion 731 is provided on the installation member 73. The sliding portion 731 enters the chute 714 and can move along the extending direction of the chute 714. When the auxiliary sheet 5 moves from Figure 21 the first state shown into Figure 22In the second state shown, the mounting member 73 moves proximally with the second fixing portion 53 of the auxiliary sheet 5, allowing the auxiliary sheet body 54 to be withdrawn from the auxiliary sheet box 7 to the greatest extent possible, maximizing the utilization of the auxiliary sheet 5. In another alternative embodiment, a sliding portion may be provided on the inner wall of the auxiliary sheet box cover 71, and a chute may be provided on either side of the mounting member 73. The sliding portion and chute may be used to achieve a sliding connection between the mounting member 73 and the auxiliary sheet box cover 71. Alternatively, there may be no sliding connection between the mounting member 73 and the auxiliary sheet box cover 71. During the process of withdrawing the auxiliary sheet 5, the top end of the mounting member 73 may tilt proximally, thereby withdrawing as much of the auxiliary sheet 5 as possible. This also falls within the scope of protection of the present application.

[0106] Figure 23 Schematic diagram of the sixth embodiment of the auxiliary film box in perspective state. The difference between this embodiment and the first embodiment is that an upward-curving hawk beak 715 is formed at the far end of the auxiliary film box. Figure 23 As shown, in this embodiment, the beak portion 715 is formed at the distal end of the auxiliary cassette cover 71. This beak portion 715 curves upward in an eagle-like shape. The provision of this beak portion 715 facilitates the distal end of the staple cartridge 1 to enter blood vessels and tissue spaces. Furthermore, the beak portion 715 forms a smooth transition with the distal surface of the staple cartridge 1 to avoid pulling on tissue. The shape of this auxiliary cassette can also be combined with the various aforementioned embodiments, and the resulting embodiments are also within the scope of protection of this application.

[0107] Figure 24 Schematic diagram of the cooperation between the auxiliary film box and the nail magazine in the seventh embodiment of the present application. In the seventh embodiment of the present application, the shape of the auxiliary film box 7 can adopt the shape of the auxiliary film box 7 in the first embodiment. Furthermore, the mounting portion 713 of the auxiliary film box 7 is rotatably connected to the distal end of the nail magazine 1. In the initial state, the cooperation state of the auxiliary film box 7 and the distal end of the nail magazine 1 is as shown in FIG. Figure 6 As shown, when the nail magazine 1 needs to be moved into the surgical position, the operator operates the auxiliary film box 7 to move it relative to the nail magazine 1. Figure 6 When rotating clockwise in the perspective shown, the distal end of the auxiliary film box 7 can form an eagle beak that bends upward relative to the distal end of the nail magazine 1, Figure 24 The state shown in FIG. 1 makes it easier for the nail magazine 1 to enter the surgical position. After the operation is completed, the auxiliary film box 7 can be rotated counterclockwise and returned to Figure 6 The initial state is shown.

[0108] Furthermore, in the seventh embodiment, the opening of the auxiliary film box cover 71 can be formed between the auxiliary film box cover 71 and the distal end surface of the nail magazine 1. In the initial state, the auxiliary film box 7 and the distal end of the nail magazine 1 are in a matching state as shown in FIG. Figure 6As shown, the size of the opening is larger than the wall thickness of the auxiliary sheet 5, so that the auxiliary sheet body 54 can be pulled out through the opening and covered on the nail magazine surface. Then, the operator operates the auxiliary sheet box 7 to make it relative to the nail magazine 1. Figure 6 Rotate clockwise to enter the Figure 24 In the state, the distal end of the auxiliary piece box 7 can form an eagle's beak that is bent upward relative to the distal end of the nail magazine 1, and the size of the opening decreases with the rotation of the auxiliary piece box 7, clamping the proximal end of the auxiliary piece body 54 to further improve the stability of the fixation of the auxiliary piece body 54.

[0109] The first and second embodiments described above illustrate the structures of the first mounting member 41 and the second mounting member 42 by way of example. In other alternative embodiments, the auxiliary plate 5 may be secured to the staple cartridge surface in other ways. For example, in one embodiment, in the first state, the auxiliary plate 5 is secured to the proximal end of the staple cartridge surface by snapping or bonding, and / or in the second state, the auxiliary plate 5 is secured to the distal end of the staple cartridge surface by snapping or bonding. In another embodiment, an axially extending slot may be provided on the staple cartridge surface, and a slider may be provided on the auxiliary plate 5. The slider may be embedded in the slot and movable relative to the slot, with the proximal and / or distal ends of the slot forming an interference fit with the slider to secure the slider relative to the slot. Alternatively, a snap-in slot may be provided at the proximal and / or distal ends of the slot, such that in the first state, the slider of the auxiliary plate 5 is secured to the snap-in slot at the proximal end of the slot and / or in the second state, the slider of the auxiliary plate 5 is secured to the snap-in slot at the distal end of the slot. Only several alternative implementations are listed here, and all of them can replace the matching methods of the auxiliary plate 5 and the nail magazine surface in the above embodiments, and all fall within the scope of protection of this application.

[0110] The above embodiments are all described by taking the auxiliary sheet box being provided at the distal end of the nail magazine assembly as an example. In other alternative embodiments, the auxiliary sheet assembly may also be provided at the distal end of the anvil, and the overall appearance of the auxiliary sheet assembly is adapted to the shape of the distal end of the anvil. When the auxiliary sheet is in a first state, the auxiliary sheet is accommodated in the auxiliary sheet box at the distal end of the anvil. When the auxiliary sheet is in a second state, the auxiliary sheet body at least partially covers the anvil surface of the anvil. The auxiliary sheet assembly may be optionally detachably mounted at the distal end of the anvil, so the operator can flexibly decide whether to install the auxiliary sheet assembly according to usage requirements. In other alternative embodiments, an auxiliary sheet assembly may also be provided at the distal end of the nail magazine assembly and the distal end of the anvil, respectively, which also falls within the scope of protection of this application.

[0111] The above content is a further detailed description of the present application in combination with specific preferred embodiments. It cannot be determined that the specific implementation of the present application is only limited to these descriptions. For those of ordinary skill in the technical field to which the present application pertains, without departing from the concept of the present application, several simple deductions or substitutions can still be made, and all should be regarded as belonging to the protection scope of the present application.

Claims

1. A secondary sheet component, characterized in that, The clamp provided on a surgical stapler, and the auxiliary sheet assembly includes: An auxiliary sheet box, installed at the distal end of the clamp, and a cavity is formed inside the auxiliary sheet box; An auxiliary sheet, the auxiliary sheet includes an auxiliary sheet body, the auxiliary sheet has a first state and a second state, when the auxiliary sheet is in the first state, at least part of the auxiliary sheet body is located inside the auxiliary sheet box, and when the auxiliary sheet is in the second state, at least part of the auxiliary sheet body covers the surface of the clamp.

2. The auxiliary sheet assembly according to claim 1, characterized in that An opening is provided on one side of the proximal end of the auxiliary sheet box, and the auxiliary sheet further includes an operating portion, the operating portion is connected to the first end of the auxiliary sheet body, and the auxiliary sheet passes through the opening of the auxiliary sheet box so that at least part of the operating portion is located outside the cavity of the auxiliary sheet box.

3. The auxiliary sheet assembly according to claim 1, characterized in that, At least one first fixing portion is provided at the first end of the auxiliary sheet body, and at least one first fixing member is provided at the proximal end of the clamp. When the auxiliary sheet is in the second state, the first fixing portion of the auxiliary sheet body is connected to the first fixing member.

4. The auxiliary sheet assembly according to claim 3, wherein, The first fixing portion of the auxiliary sheet body is a fixing groove, and the first fixing member is a protrusion protruding from the surface of the clamp; or, the first fixing portion of the auxiliary sheet body is a protrusion facing the clamp, and the first fixing member is a fixing groove.

5. The auxiliary sheet assembly according to claim 3, wherein, At least part of the auxiliary sheet body is elastic, and the first fixing portion of the auxiliary sheet body is a fixing groove; An installation groove is provided at the proximal end of the clamp, the first fixing member includes a matching portion, a clamping portion and a stopping portion, the matching portion is embedded in the installation groove, the clamping portion is connected between the matching portion and the stopping portion, and the size of the clamping portion is smaller than the size of the stopping portion.

6. The auxiliary sheet assembly according to claim 1, wherein When the auxiliary sheet is in the first state, the part of the auxiliary sheet body located inside the auxiliary sheet box is wound into a scroll shape.

7. The auxiliary sheet component according to claim 6, wherein The auxiliary sheet further includes a second fixing portion, the second fixing portion is connected to the second end of the auxiliary sheet body, and the second fixing portion is fixed inside the auxiliary sheet box.

8. The auxiliary sheet assembly according to claim 7, wherein A roller and a fixing shaft are further provided inside the cavity of the auxiliary sheet box, the roller is sleeved outside the fixing shaft and is rotatable relative to the fixing shaft, the fixing shaft is fixed to the auxiliary sheet box, the second fixing portion of the auxiliary sheet is fixed to the roller, and when the auxiliary sheet is in the first state, the part of the auxiliary sheet body located inside the auxiliary sheet box is wound around the roller to form a scroll shape.

9. The auxiliary sheet assembly according to claim 6, characterized in that, A pin shaft is provided inside the cavity of the auxiliary sheet box, the pin shaft is rotatable relative to the auxiliary sheet box, and the second fixing portion of the auxiliary sheet is fixed to the pin shaft; or, the second fixing portion of the auxiliary sheet is curled to form a pin shaft; When the auxiliary sheet is in the first state, the part of the auxiliary sheet body located inside the auxiliary sheet box is wound around the pin shaft to form a scroll shape.

10. The auxiliary sheet component according to claim 9, characterized in that, A cavity is formed between the pin shaft and the inner wall of the auxiliary sheet box.

11. The auxiliary sheet assembly according to claim 1, wherein When the auxiliary sheet is in the first state, the part of the auxiliary sheet body located inside the auxiliary sheet box is folded into a multi-layer structure.

12. The auxiliary sheet component according to claim 11, characterized in that, The stacking direction of the multi-layer structure is parallel to the axial direction of the stapler or perpendicular to the axial direction of the stapler.

13. The auxiliary sheet component according to claim 11, wherein It further includes a mounting member disposed inside the auxiliary sheet cassette. The auxiliary sheet further includes a second fixing portion fixed to the mounting member. When the auxiliary sheet enters the second state from the first state, the mounting member moves from the distal end of the auxiliary sheet cassette to the proximal end of the auxiliary sheet cassette along with the second fixing portion.

14. The auxiliary sheet component according to claim 1, wherein, The auxiliary sheet further includes a second fixing portion located inside the auxiliary sheet cassette. The auxiliary sheet assembly further includes: A cutting member, at least partially located on the proximal side of the second fixing portion of the auxiliary sheet. The cutting member has a third state and a fourth state. When the cutting member is in the third state, the cutting member is located on one side of the second end of the auxiliary sheet body and has a certain gap from the second end of the auxiliary sheet body in a first direction. A driving member fixed to the cutting member and configured to drive the cutting member to move in the first direction to enter the fourth state from the third state. The first side of the cutting member cuts the second end of the auxiliary sheet body so that the second fixing portion is separated from the auxiliary sheet body.

15. The auxiliary sheet assembly according to claim 14, wherein, At least a part of the driving member protrudes from the proximal end of the auxiliary sheet cassette. A firing block is further provided inside the clamp. When the firing block is configured to abut against the driving member and move in the distal direction, the cutting member is driven to move in the first direction through the driving member.

16. The auxiliary sheet assembly according to claim 14, wherein When the cutting member is in the fourth state, the first side of the cutting member abuts against the inner wall surface of the auxiliary sheet cassette.

17. The auxiliary sheet assembly according to claim 1, characterized in that, The auxiliary sheet cassette includes an auxiliary sheet cassette cover and an auxiliary sheet cassette seat that can be at least partially separated from each other. The cavity is formed between the auxiliary sheet cassette cover and the auxiliary sheet cassette seat.

18. The auxiliary sheet component according to claim 1, wherein, The proximal height of the auxiliary sheet cassette is greater than the distal height of the auxiliary sheet cassette, so that at least one surface of the auxiliary sheet cassette forms an inclined guiding surface.

19. The auxiliary sheet assembly according to claim 3, wherein, A second fixing member is further provided at the distal end of the clamp. When the auxiliary sheet is in the first state, the first fixing portion of the auxiliary sheet body is connected to the second fixing member.

20. The auxiliary sheet assembly according to claim 1, characterized in that, A cutter is further provided inside the clamp, and the cutter moves along the cutter groove of the clamp. When the auxiliary sheet is in the second state, the auxiliary sheet body is provided with a dotted line corresponding to the position of the cutter groove; and / or, a separation groove is provided at the distal end of the auxiliary sheet body. When the cutter moves to the distal end of the cutter groove, at least a part of the cutter is located in the separation groove.

21. The auxiliary sheet component according to claim 1, characterized in that, The proximal end of the auxiliary sheet cassette is provided with a mounting portion, and the auxiliary sheet cassette is detachably disposed at the distal end of the clamp through the mounting portion.

22. The auxiliary sheet assembly according to claim 21, wherein The auxiliary sheet cassette is rotatably connected to the distal end of the clamp through the mounting portion.

23. The auxiliary sheet component according to claim 1, wherein, The distal end of the auxiliary sheet cassette is provided with an eagle beak portion that bends upward in a beak shape.

24. A surgical stapler, characterized in that, It includes the auxiliary sheet assembly according to any one of claims 1 to 23.

Images