Forceps holder assembly and surgical anastomat

Abstract

The invention provides a forceps clip assembly and a surgical anastomat, the forceps clip assembly comprises a forceps clip, a forceps clip, a first elastic part, a second elastic part and a third elastic part, and a hollow cavity is formed in the far end of the forceps clip; the auxiliary piece has a storage state and an unfolding state, when the auxiliary piece is in the storage state, at least part of the first end of the auxiliary piece is stored in the cavity, and the second end of the auxiliary piece is located at the far end of the forceps clip and located outside the cavity; when the auxiliary sheet is in the unfolded state, the second end of the auxiliary sheet is located at the near end of the forceps holder, and the auxiliary sheet at least partially covers the surface of the forceps holder. According to the multifunctional forceps holder with the auxiliary sheet storage function, the auxiliary sheets are stored in the cavity in the far end of the forceps holder, when the multifunctional forceps holder is not used, the auxiliary sheets can be stored in the forceps holder, and when the multifunctional forceps holder needs to be used, the auxiliary sheets can be conveniently taken out of the cavity.

Description

Technical Field

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

[0002] A surgical stapler includes a stapler body and an execution end located at the distal end of the stapler. The stapler body includes a firing assembly, and the execution end includes two relatively arranged clamps. The proximal ends of the two clamps are rotatably connected so that the jaws between the two clamps have two states: open and closed. During surgery, the execution end is placed at the surgical site, and the size of the jaws between the two clamps is adjusted to gradually clamp the tissue. The staples in one clamp are pushed towards the other clamp so that the staples are sutured onto the tissue.

[0003] In some surgeries, it is necessary to provide auxiliary sheets on the surface of one or two clamps for strengthening and reinforcing the anastomosis. During surgery, the auxiliary sheets can be sutured onto the tissue together with the staples. The existing auxiliary sheets and clamps are often separate components, which are separately arranged during transportation and storage, and the auxiliary sheets are taken out from the storage device and installed on the surface of the clamps 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 a clamp assembly and a surgical stapler, to provide a multifunctional clamp with the function of storing auxiliary sheets, storing the auxiliary sheets inside the cavity at the distal end of the clamp. When not in use, the clamp can store the auxiliary sheets, and when needed, the auxiliary sheets can be conveniently taken out from the cavity.

[0005] An embodiment of the present application provides a clamp assembly for a surgical stapler, and the clamp assembly includes:

[0006] A clamp, and a hollow cavity is provided inside the distal end of the clamp;

[0007] An auxiliary sheet, which has a storage state and an unfolded state. When the auxiliary sheet is in the storage state, at least a part of the first end of the auxiliary sheet is stored inside the cavity, and the second end of the auxiliary sheet is located at the distal end of the clamp and outside the cavity; when the auxiliary sheet is in the unfolded state, the second end of the auxiliary sheet is located at the proximal end of the clamp, and the auxiliary sheet at least partially covers the surface of the clamp.

[0008] In some embodiments, a first fixing portion is provided at the second end of the auxiliary sheet. When the auxiliary sheet is in the unfolded state, the first fixing portion is fixed to the proximal surface of the clamp; and / or when the auxiliary sheet is in the storage state, the first fixing portion is installed on the distal surface of the clamp.

[0009] In some embodiments, a first fixing member is provided at the proximal end of the clamp, and the first fixing portion of the auxiliary piece is provided with a mounting hole. When the auxiliary piece is in the deployed state, the mounting hole is sleeved outside the first fixing member.

[0010] The assembly further includes a cutter. When the cutter moves from the proximal end to the distal end of the clamp, the cutter cuts the hole wall of the mounting hole.

[0011] In some embodiments, a first opening and a receiving groove are provided on the distal surface of the clamp. The first opening is in communication with the cavity, and at least a part of the receiving groove is located on the proximal side of the first opening.

[0012] When the auxiliary piece is in the retracted state, the auxiliary piece passes through the first opening, and the second end of the auxiliary piece is located in the receiving groove, and the surface of the auxiliary piece does not protrude from the surface of the clamp.

[0013] In some embodiments, a second fixing member is provided in the receiving groove of the clamp, and the top height of the second fixing member is lower than or equal to the surface height of the clamp.

[0014] In some embodiments, an assembly plate is further included. A second opening is provided on the distal wall surface of the clamp. The second opening is in communication with the cavity. The assembly plate is detachably connected to the clamp, and at least a part of the assembly plate covers the second opening.

[0015] In some embodiments, when the auxiliary piece is in the retracted state, the auxiliary piece is at least partially folded into a multi-layer structure, and the multi-layer structure is located inside the cavity.

[0016] In some embodiments, the stacking direction of the multi-layer structure is perpendicular to the axial direction of the clamp or parallel to the axial direction of the clamp.

[0017] In some embodiments, a mounting member is further provided inside the cavity. The first end of the auxiliary piece is provided with a second fixing portion, and the second fixing portion is connected to the mounting member. The mounting member can move along the axial direction of the clamp relative to the side wall of the cavity.

[0018] In some embodiments, a sliding groove extending along the axial direction is provided on the side wall of the cavity. The mounting member is provided with a sliding portion, and at least a part of the sliding portion is located in the sliding groove and can move along the extending direction of the sliding portion.

[0019] In some embodiments, the auxiliary piece includes an auxiliary piece body and a second fixing portion, the second fixing portion is located inside the cavity, and a cutting piece is also provided inside the cavity, the cutting piece is at least partially located on the proximal side of the second fixing portion, and when the cutting piece is driven to move toward the auxiliary piece, the cutting piece cuts the auxiliary piece to separate the auxiliary piece body from the second fixing portion.

[0020] In some embodiments, a firing piece is also included, and a driving piece linked to the cutting piece is also provided inside the cavity. When the firing piece is driven to move from the proximal end of the clamp to the distal end of the clamp, the firing piece drives the cutting piece to move toward the auxiliary piece through the driving piece.

[0021] In some embodiments, the jaws are provided with a cutting groove extending along the axial direction of the jaws, and the proximal end of the driving member is at least partially located inside the distal end of the cutting groove.

[0022] In some embodiments, the inner wall of the cavity is provided with at least one supporting portion, the supporting portion is located on the proximal side of the second fixing portion, and there is a first gap between the top end of the supporting portion and the upper wall of the cavity, and the auxiliary piece is passed through the first gap.

[0023] In some embodiments, the proximal side surface of the support portion is a guide surface extending longitudinally, and the distal side of the cutting member or the driving member is abutted against the guide surface of the support portion. When the driving member is driven by the firing member in the distal direction, the cutting member is driven to move longitudinally along the guide surface.

[0024] In some embodiments, the distal end of the clamp includes a guide surface inclined toward the bottom surface, or the distal end of the clamp includes an olecranon portion that is bent and tilted upward.

[0025] In some embodiments, when the auxiliary sheet is in the stored state, the auxiliary sheet is at least partially wound into a reel structure, and the reel structure is located inside the cavity.

[0026] In some embodiments, the distal end of the clamp is further provided with a beak, and the beak is rotatably connected to the distal end of the clamp.

[0027] An embodiment of the present application also provides a surgical stapler, comprising the above-mentioned clamp assembly.

[0028] The clamp assembly and surgical stapler provided by this application have the following advantages:

[0029] The present application provides a multifunctional clamp with the function of storing auxiliary sheets. The auxiliary sheets are stored inside the cavity at the distal end of the clamp, eliminating the need for additional auxiliary sheet storage devices and reducing the overall cost. When the stapler is not in use, the clamp can store the auxiliary sheets. For example, even if the auxiliary sheets are not required during the operation, they can remain stored in the cavity without affecting the normal use of the stapler. When the auxiliary sheets are needed, they can be conveniently taken out of the cavity, unfolded, and laid on the surface of the clamp so that they can be sutured onto the tissue together with the staples to reinforce and strengthen the tissue. Description of the Drawings

[0030] Other features, objects, and advantages of the present application will become more apparent by reading the detailed description of the non-limiting embodiments with reference to the following drawings.

[0031] Figure 1 is a schematic structural diagram of the execution end of the first embodiment of the present application;

[0032] Figure 2 is a schematic structural diagram of the clamp assembly of the first embodiment of the present application;

[0033] Figure 3 is a top view of the clamp assembly of the first embodiment of the present application;

[0034] Figure 4 is Figure 3 a cross-sectional view taken along the A-A direction in

[0035] Figure 5 is Figure 4 a partial enlarged view of the distal end in

[0036] Figure 6 is a schematic structural diagram of the staple cartridge of the first embodiment of the present application;

[0037] Figure 7 is a side view of the clamp assembly with the staple cartridge omitted in the first embodiment of the present application;

[0038] Figure 8 is a schematic diagram of the cooperation of the auxiliary sheet, cutting member, and mounting member in the first embodiment of the present application;

[0039] Figure 9 is a schematic diagram of the cooperation of the anvil and the assembly plate in the first embodiment of the present application;

[0040] Figure 10 is a schematic diagram of the clamp assembly when the auxiliary sheet is pulled out in the first embodiment of the present application;

[0041] Figure 11 is a schematic diagram of the clamp assembly when the auxiliary sheet is in the unfolded state in the first embodiment of the present application;

[0042] Figure 12 isFigure 11 Partial enlarged view of the distal end;

[0043] Figure 13 It is a schematic structural view of the auxiliary sheet of the first embodiment of the present application;

[0044] Figure 14 It is a schematic structural view of the cartridge of the second embodiment of the present application;

[0045] Figure 15 It is a cross-sectional view of the clamping assembly of the third embodiment of the present application;

[0046] Figure 16 is Figure 15 Partial enlarged view of the distal end;

[0047] Figure 17 It is a schematic structural view of the clamping assembly of the fourth embodiment of the present application;

[0048] Figure 18 It is a schematic view of the beak member of the fourth embodiment of the present application;

[0049] Figure 19 It is a schematic structural view of the clamping assembly omitting the beak member of the fourth embodiment of the present application;

[0050] Figure 20 It is a schematic view of the rotated beak member of the fourth embodiment of the present application.

[0051] Reference numerals:

[0052] 1 Cartridge 2 Cartridge holder

[0053] 11 Distal end of the cartridge 31 Firing member

[0054] 111 Cavity 32 Pusher

[0055] 112 First opening 33 Cutter

[0056] 113 Second opening 41 First fixing member

[0057] 114 Guide surface 42 Second fixing member

[0058] 115 Beak portion 5 Auxiliary sheet

[0059] 116 Receiving groove 51 Second end of the auxiliary sheet

[0060] 12 Cartridge surface 52 First fixing portion

[0061] 13 Nail hole 53 Second fixing portion

[0062] 14 Cutter groove 54 Auxiliary sheet body

[0063] 15 Installation groove, 55-point broken line

[0064] 16 Assembly plate, 56 Cutting groove

[0065] 161 Arc surface groove, 57 The first end of the auxiliary piece

[0066] 17 Installation part, 81 Cutting part

[0067] 171 Sliding part, 82 Driving part

[0068] 18 Sliding groove, 821 Driving surface

[0069] 19 Support part, 9 Anvil

[0070] 101 Rotating shaft, 91 Eagle beak part

[0071] 102 Guide part, 92 Eagle beak rotating shaft

[0072] 103 Rotating shaft fixing hole Detailed implementation manners

[0073] 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 the concept of the example embodiments will be fully conveyed to those skilled in the art. Identical reference numerals in the figures denote identical or similar structures, and thus their repeated description will be omitted. The "or" in the specification may mean "and" or "or". Although terms such as "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 drawings. Nothing in this specification should be construed as requiring a specific three-dimensional direction of the structure to fall within the scope of the present application. Although terms such as "first" or "second" etc. are used in this specification to represent certain features, they are only for representational purposes and do not limit the quantity and importance of the specific features.

[0074] The present application provides a clamping assembly for a surgical stapler and a surgical stapler including the clamping assembly. The clamping assembly includes a clamp, and a hollow cavity is provided inside the distal end of the clamp. A auxiliary sheet, the auxiliary sheet has a storage state and a deployed state. When the auxiliary sheet is in the storage state, at least a part of the first end of the auxiliary sheet is stored inside the cavity, and the second end of the auxiliary sheet is located at the distal end of the clamp and outside the cavity. Thus, the clamp is a multi-functional clamp with the function of storing the auxiliary sheet. The auxiliary sheet is stored inside the cavity at the distal end of the clamp, and there is no need to provide other additional auxiliary sheet storage devices, which reduces the overall cost. When the stapler is not in use, the clamp can store the auxiliary sheet. For example, when the auxiliary sheet is not needed during the operation, it can also maintain the storage state of the auxiliary sheet inside the cavity without affecting the normal use of the stapler.

[0075] When the auxiliary sheet needs to be used, the auxiliary sheet is pulled out from the cavity. After the auxiliary sheet enters the deployed state, the second end of the auxiliary sheet is located at the proximal end of the clamp, and the auxiliary sheet at least partially covers the surface of the clamp. When the stapler is fired, after the staples are pushed out, the auxiliary sheet can be sutured onto the tissue together with the staples to reinforce and strengthen the tissue.

[0076] The structure of the clamping assembly in a specific embodiment will be described in detail below with reference to the accompanying drawings. It can be understood that the drawings and the following description are only examples and do not limit the protection scope of the present application.

[0077] As Figure 1 and Figure 2 shown, the clamping assembly includes a clamp. In this embodiment, the clamp of the clamping assembly is taken as the staple cartridge 1 for illustration. The staple cartridge 1 is used to accommodate staples, and a staple cartridge holder 2 for accommodating the staple cartridge 1 is provided outside the staple cartridge 1. The clamping assembly and the anvil 9 are arranged oppositely to jointly form the execution end of the surgical stapler. The surgical stapler includes this execution end and a stapler body provided at the proximal end of the execution end. A push knife rod is provided inside the stapler body. In other alternative embodiments, the clamp in the clamping assembly can also be the anvil 9, which also falls within the protection scope of the present application. 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, in Figure 1 , Figure 3 , Figure 4 the S1 direction in or the direction opposite to S1. In Figure 2 's perspective, for the staple cartridge 1, its distal end is the left end and its proximal end is the right end. In Figure 3 the S2 direction represents the transverse direction, that is, the width direction, Figure 4 and the S3 direction in Figure 4 is the longitudinal direction, that is, the height direction.

[0078] As shown Figures 2 - 5 in the figure, the clamp assembly further includes a cutter 33, a firing member 31, a plurality of pusher members 32 located inside the staple cartridge 1, and an auxiliary piece 5 that can be received at the distal end of the staple cartridge 1. The staple cartridge 1 includes a staple cartridge surface 12, and a plurality of staple holes 13 are formed inside the staple cartridge 1, and the staple holes 13 open at the staple cartridge surface 12. The staple cartridge 1 is further provided with a cutter groove 14 extending axially. In the initial state, both the cutter 33 and the firing member 31 are located at the proximal end of the staple cartridge 1, and the cutter 33 is located at the proximal end of the firing member 31. The pusher members 32 and the anastomosis staples are received inside the staple holes 13, and the pusher members 32 are provided below the anastomosis staples. During the firing of the stapler, the cutter 33 is driven to move in the distal direction along the cutter groove 14, the cutter 33 drives the firing member 31 to move in the distal direction, and the firing member 31 pushes the pusher members 32 towards the anvil 9, so that the anastomosis staples are pushed towards the anvil 9 and sutured to the tissue. At the same time, the cutter 33 cuts the tissue, completing the suturing and cutting of the tissue, that is, completing the firing of the stapler.

[0079] A hollow cavity 111 is provided inside the distal end 11 of the staple cartridge 1. The auxiliary piece 5 has Figure 4 and Figure 5 the received state shown Figure 11 and Figure 4 the deployed state shown. As Figure 5 shown in the figure, the auxiliary piece 5 includes a first end 57 and a second end 51. In the initial state, the auxiliary piece 5 is in the received state, at least a part of the first end 57 of the auxiliary piece 5 is received inside the cavity 111, and the second end 51 of the auxiliary piece 5 is located at the distal end 11 of the staple cartridge 1 and outside the cavity 111. Thus, the staple cartridge 1 is a multifunctional staple cartridge 1 with the function of receiving the auxiliary piece 5. The auxiliary piece 5 is received inside the cavity 111 at the distal end of the staple cartridge 1, eliminating the need for an additional auxiliary piece storage device, reducing the overall cost. When the stapler is not in use, the staple cartridge 1 can store the auxiliary piece 5. For example, when the auxiliary piece 5 is not needed during the operation, the auxiliary piece 5 can also be kept in the received state inside the cavity without affecting the normal use of the stapler.

[0080] When the auxiliary piece 5 needs to be used, the operator holds the second end of the auxiliary piece 5 and pulls the auxiliary piece 5 towards the proximal end of the staple cartridge 1, so that the auxiliary piece 5 is drawn out of the cavity 111, and the auxiliary piece 5 enters the deployed state. As Figure 11As shown, when the auxiliary sheet 5 is in the deployed state, the second end 51 of the auxiliary sheet 5 is located at the proximal end of the staple cartridge 1, and the auxiliary sheet body 54 at least partially covers the surface of the staple cartridge 1. The width of the auxiliary sheet body 54 can be selected to be greater than or equal to the distance between the outermost two rows of staple holes 13, and the length of the auxiliary sheet body 54 can be selected to be greater than or equal to the distance between the most distal staple hole 13 and the most proximal staple hole 13, so that when the auxiliary sheet 5 is in the stored state, the auxiliary sheet 5 can cover all the staple holes 13. When the stapler is fired, after the staples are pushed out, the auxiliary sheet 5 can be sutured to the tissue together with the staples to reinforce and strengthen the tissue. 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 the effect of assisting medical treatment.

[0081] As Figure 2 , Figure 5 and Figure 6 As shown, a first opening 112 is provided on the surface of the distal end 11 of the staple cartridge 1. The first opening 112 communicates with the cavity 111, and the first opening 112 extends transversely along the staple cartridge 1. The auxiliary sheet 5 is passed through the first opening 112. The auxiliary sheet 5 includes an auxiliary sheet body 54, a first fixing portion 52 and a second fixing portion 53. The first fixing portion 52 is provided at the second end of the auxiliary sheet body 54, and the second fixing portion 53 is provided at the first end of the auxiliary sheet body 54. A second fixing member 42 is provided on the surface of the distal end 11 of the staple cartridge 1, and the second fixing member 42 is located on the proximal side of the first opening 112. When the auxiliary sheet 5 is in the stored state, the first fixing portion 52 of the auxiliary sheet 5 is located outside the cavity 111 and fixed to the second fixing member 42 to prevent the first fixing portion 52 from retracting into the interior of the cavity 111 and being difficult to extract. When the auxiliary sheet 5 needs to be used, the operator separates the first fixing portion 52 from the second fixing member 42, and then holds the second end 51 of the auxiliary sheet 5 and pulls it towards the proximal end of the staple cartridge 1, and the auxiliary sheet body 54 can be pulled outwards to make the auxiliary sheet 5 enter the deployed state.

[0082] A receiving groove 116 is further provided on the surface of the distal end 11 of the staple cartridge 1, and the receiving groove 116 is at least partially located on the proximal side of the first opening 112. The second fixing member 42 is provided in the receiving groove 116. When the auxiliary sheet 5 is in the stored state, the surface of the auxiliary sheet 5 does not protrude from the surface of the staple cartridge 1. When the auxiliary sheet 5 is not required in the operation, the auxiliary sheet 5 will not affect the normal cooperation of the staple cartridge 1 with the tissue at the operation position, and the top height of the second fixing member 42 is lower than or equal to the surface height of the staple cartridge 1, so that the second fixing member 42 will not cause traction damage to the tissue due to protruding from the surface height of the staple cartridge 1.

[0083] As Figure 11 and Figure 12 shown, a first fixing member 41 is provided at the proximal end of the staple cartridge 1. When the auxiliary piece 5 is in the deployed state, the first fixing portion 52 is fixed to the proximal surface of the staple cartridge 1 through the first fixing member 41, while the second fixing portion 53 of the auxiliary piece 5 remains inside the cavity 111, so that the auxiliary piece body 54 is flattened and deployed to cover the staple cartridge surface 12. Combining Figure 2 、 Figure 3 and Figure 6 it can be seen that in this embodiment, the first fixing portion 52 of the auxiliary piece 5 is provided with a mounting hole. The first fixing member 41 and the second fixing member 42 each include at least one boss. When the auxiliary piece 5 is in the deployed state, the first fixing portion 52 can be sleeved outside the first fixing member 41 to fix the second end 51 of the auxiliary piece 5 to the proximal end of the staple cartridge 1. When the auxiliary piece 5 is in the retracted state, the first fixing portion 52 can be sleeved outside the second fixing member 42 to fix the proximal end of the staple cartridge 1 to the distal end of the staple cartridge 1. Mounting grooves 15 are respectively provided at the proximal end and the distal end of the staple cartridge 1 for mounting the first fixing member 41 and the second fixing member 42. The first fixing member 41 and the second fixing member 42 and the mounting grooves can be fixed together by interference fit, welding, bonding or other means. When the operator pulls out the auxiliary piece 5 to make it in the deployed state, the mounting hole is sleeved outside the first fixing member 41. This mounting hole is a closed hole. During the firing process of the stapler, the cutter 33 moves in the distal direction. When it moves to the first fixing member 41, it cuts off the distal side wall of the mounting hole, making the mounting hole an unclosed hole, so that the mounting hole can be disengaged from the first fixing member 41, and the second end 51 of the auxiliary piece 5 is disengaged from the staple cartridge surface 12. The structures of the first fixing portion 52, the first fixing member 41 and the second fixing member 42 here are only examples. In another alternative embodiment, it is also possible that the first fixing portion 52 is a convex portion, the first fixing member 41 and the second fixing member 42 are grooves, and the first fixing portion 52 can form an embedded fit with the first fixing member 41 or the second fixing member 42, which also belongs to the protection scope of the present application.

[0084] As Figure 5 and Figure 9As shown, the clamp assembly further includes an assembly plate 16. The distal end 11 wall surface of the staple cartridge 1 is provided with a second opening 113, and the second opening 113 communicates with the cavity 111. The assembly plate 16 is detachably connected to the staple cartridge 1, and the assembly plate 16 at least partially covers the second opening 113. The auxiliary sheet 5 in the cavity 111 can be installed and replaced through the second opening 113. For example, when it is necessary to install the auxiliary sheet 5 into the cavity 111, the assembly plate 16 is removed from the staple cartridge 1, the auxiliary sheet 5 is inserted into the cavity 111 through the second opening 113, and then the assembly plate 16 is installed on the staple cartridge 1 to hold the auxiliary sheet 5 inside the cavity 111. When the auxiliary sheet 5 needs to be replaced, the assembly plate 16 can be removed from the staple cartridge 1, the old auxiliary sheet 5 is taken out through the second opening 113, and the new auxiliary sheet 5 is inserted through the second opening 113. In this embodiment, the second opening 113 is provided on the distal end 11 bottom surface of the staple cartridge 1, and the assembly plate 16 is a bottom plate, which also has the function of supporting the auxiliary sheet 5. In other alternative embodiments, the second opening 113 can also be opened on the distal end 11 side wall or the distal end 11 upper wall surface of the staple cartridge 1, which are all within the protection scope of the present application.

[0085] As Figures 4 - 7 shown, when the auxiliary sheet 5 is in the storage state, the auxiliary sheet 5 is at least partially folded into a multi-layer structure, and the multi-layer structure is located inside the cavity 111. By folding the auxiliary sheet 5 into a multi-layer structure, it is beneficial to reduce the storage volume of the auxiliary sheet 5 and make the auxiliary sheet 5 smoother when being drawn out. In this embodiment, the stacking direction of the multi-layer structure is parallel to the axial direction of the staple cartridge 1. Therefore, the stacking direction is the same as the direction in which the auxiliary sheet 5 is drawn out, so that the auxiliary sheet 5 is drawn out from the second end 51 to the first end 57 of the auxiliary sheet 5 in sequence when being drawn out, and the auxiliary sheet 5 can be laid flatter on the staple cartridge surface 12. In another alternative embodiment, the stacking direction of the multi-layer structure can also be perpendicular to the axial direction of the staple cartridge 1, or other directions, which are also within the protection scope of the present application. An installation member 17 is further provided inside the cavity 111. The second fixing portion 53 of the auxiliary sheet 5 is located inside the cavity 111, and the second fixing portion 53 of the auxiliary sheet 5 is connected to the installation member 17. For example, the second fixing portion 53 and the installation member 17 can be fixed to each other by means of snap connection, bonding, embedding fit, etc. The installation member 17 can move along the axial direction of the staple cartridge 1 relative to the side wall of the cavity 111. Specifically, the side wall of the cavity 111 is provided with a chute 18 extending along the axial direction, the installation member 17 is provided with a sliding portion 171, and the sliding portion 171 is at least partially located in the chute 18 and can move along the extending direction of the sliding portion 171.

[0086] In this embodiment, a cutting member 81 is further disposed inside the cavity 111. The top end of the cutting member 81 forms a sharp blade shape. At least a part of the cutting member 81 is located on the proximal side of the second fixing portion 53. When no external force is applied, there is a certain gap in the longitudinal direction between the top end of the cutting member 81 and the auxiliary piece 5, so that the cutting member 81 will not contact the auxiliary piece 5 and damage the auxiliary piece 5. When the cutting member 81 is driven to move towards the auxiliary piece 5, the cutting member 81 moves upward and cuts the auxiliary piece 5 through the blade at the top end, so that the auxiliary piece body 54 is separated from the second fixing portion 53, and the second fixing portion 53 is left in the cavity 111 while the auxiliary piece body 54 is sutured to the tissue together with the staple, so as to prevent the second fixing portion 53 from affecting the normal closing and forming of the staple. A driving member 82 linked to the cutting member 81 is further disposed inside the cavity 111. At least a part of the proximal end of the driving member 82 is located inside the distal end of the cutter groove 14, and the driving member 82 can be driven by the firing member 31. An inclined driving surface 821 is provided on the proximal side of the driving member 82, which can convert the driving force of the firing member 31 in the distal direction into an upward driving force and transmit it to the cutting member 81. When the stapler is fired, the firing member 31 is driven to move from the proximal end of the staple cartridge 1 to the distal end 11 of the staple cartridge 1, and the firing member 31 drives the cutting member 81 to move towards the auxiliary piece 5 through the driving member 82. After the stapler is fired, the assembly plate 16 can be removed, and the remaining second fixing portion 53 can be taken out from the second opening 113, and then a new auxiliary piece 5 can be put in, which is very convenient to replace.

[0087] In this embodiment, at least one supporting portion 19 is provided on the inner wall of the cavity 111. The supporting portion 19 is located on the proximal side of the second fixing portion 53. There is a first gap between the top end of the supporting portion 19 and the upper wall of the cavity 111. The auxiliary piece 5 passes through the first gap. By providing the supporting portion 19, the auxiliary piece 5 can be supported to a certain extent, which is beneficial to maintaining the stability of the auxiliary piece 5 inside the cavity 111, and the auxiliary piece 5 can be kept above the cutting member 81 and will not be accidentally cut off by the cutting member 81. The proximal side surface of the supporting portion 19 is a guiding surface extending in the longitudinal direction. The distal side of the cutting member 81 or the driving member 82 abuts against the guiding surface of the supporting portion 19. When the driving member 82 receives the driving force of the firing member 31 in the distal direction, the driving member 82 drives the cutting member 81 to move longitudinally upward along the guiding surface.

[0088] In this embodiment, the distal end 11 of the staple cartridge 1 includes a guiding surface 114 inclined towards the bottom surface, so that the distal end 11 of the staple cartridge 1 can also be used as the distal guiding portion of the staple cartridge 1 to guide the staple cartridge 1 to reach the surgical position more easily. Figure 6Exemplarily shown in the figure, the upper surface of the distal end 11 of the staple cartridge 1 is formed as an inclined guiding surface 114. In other embodiments, the lower surface of the distal end 11 of the staple cartridge 1, or both the upper surface and the lower surface, may be formed as inclined guiding surfaces. The guiding surface 114 may be an inclined plane or an inclined curved surface. Alternatively, when the distal end 11 of the staple cartridge 1 does not function as a guide, the upper and lower surfaces of the distal end 11 of the staple cartridge 1 may respectively be planes parallel to the staple cartridge surface 12.

[0089] As Figure 13 shown, the auxiliary sheet body 54 is provided with dotted lines 55. When the auxiliary sheet 5 is in the deployed state, the dotted lines 55 correspond to the positions of the cutting grooves 14, that is, the projection of the dotted lines 55 on the staple cartridge surface 12 of the staple cartridge 1 at least partially coincides with the cutting grooves 14. A cutting groove 56 is provided at the first end of the auxiliary sheet body 54. The cutting groove 56 opens at the first end 57 of the auxiliary sheet 5 and extends axially in the direction of the second end 51 of the auxiliary sheet 5 for a certain distance. When the stapler is fired, when the cutter 33 moves to the distal end of the cutting groove 14, at least a part of the cutter 33 enters the cutting groove 56, so that the first end of the auxiliary sheet body 54 can be completely cut. Correspondingly, the cutting member 81 may be provided as a complete one as Figure 8 shown, or a cutting member 81 may be respectively provided on both the transverse sides of the axis of the staple cartridge 1. The cutting member 81 cuts the auxiliary sheet body 54 on both sides of the cutting groove 56, and the function of separating the auxiliary sheet body 54 from the second fixing portion 53 can also be achieved.

[0090] Therefore, the working principle of the clamping assembly of this embodiment will be introduced in detail below in conjunction with Figure 4 , Figure 5 , Figures 10 - 12 . As Figure 4 and Figure 5 shown, in the initial state, the auxiliary sheet 5 is in the stored state. The second fixing portion 53 of the auxiliary sheet 5 is fixed to the mounting member 17 and is located at the distal end of the cavity 111 together with the mounting member 17. The auxiliary sheet body 54 is folded to form a multi-layer structure and is stored inside the cavity 111. The first fixing portion 52 passes through the first opening 112 and is fixed to the second fixing member 42. The cutter 33 and the firing member 31 are both located at the proximal end of the staple cartridge 1. The pusher 32 and the staples are received in the staple holes 13. There is a longitudinal gap between the top end of the cutting member 81 and the auxiliary sheet 5, so that the cutting member 81 does not contact the auxiliary sheet 5. As Figure 10 shown, when the auxiliary sheet 5 needs to be used, the operator separates the first fixing portion 52 of the auxiliary sheet 5 from the second fixing member 42, holds the second end 51 of the auxiliary sheet 5 and pulls the auxiliary sheet 5 out towards the proximal end of the staple cartridge 1. During the process of pulling out the auxiliary sheet 5, the multi-layer structure is gradually released, the first fixing portion 52 of the auxiliary sheet 5 moves towards the proximal end direction, and the auxiliary sheet body 54 gradually covers the staple cartridge surface 12.Figure 11 As shown, after the multi-layer structure is completely released, when the second end 51 of the auxiliary sheet 5 is continuously pulled toward the proximal direction, the second fixing portion 53 of the auxiliary sheet 5 drives the mounting member 17 to move along the slide groove 18 toward the proximal direction, so that the mounting member 17 moves to the proximal end of the cavity 111. Then, the operator fixes the first fixing portion 52 of the auxiliary sheet 5 to the first fixing member 41 at the proximal end of the nail magazine 1, so that the auxiliary sheet body 54 covers the nail magazine surface 12. Figure 11 When the stapler is in the state of being ... The auxiliary sheet body 54 is completely cut into two halves in the cutting groove 56 at the distal end, and the firing member 31 moves to the distal end and abuts against the driving surface 821 of the driving member 82, giving the driving member 82 a driving force in the distal direction. The driving surface 821 converts the driving force into an upward driving force for the cutting member 81, driving the cutting member 81 to move upward and cut the auxiliary sheet 5, so that the auxiliary sheet body 54 and the second fixing part 53 are separated. The auxiliary sheet body 54 can be stapled to the tissue as a whole along with the staples and separated from the staple magazine 1, while the second fixing part 53 is still left inside the cavity 111. The separation of the auxiliary sheet body 54 and the staple magazine 1 is synchronized with the process of the stapler being pushed out, and the auxiliary sheet 5 will not affect the smoothness of the stapler firing process.

[0091] Figure 14 This is a schematic diagram of the structure of the staple cartridge 1 according to the second embodiment of the present application. This embodiment differs from the first embodiment in that, in the second embodiment, the distal end 11 of the staple cartridge 1 includes an upwardly curved, tilted olecranon 115. This olecranon 115 curves upward in an olecranon-like shape. The provision of this olecranon 115 makes it easier for the distal end of the staple cartridge 1 to enter blood vessels and tissue spaces.

[0092] Figure 15 and Figure 16It is a schematic structural view of the staple cartridge 1 of the third embodiment of the present application. The difference between this embodiment and the first embodiment is that in the third embodiment, when the auxiliary piece 5 is in the storage state, at least a part of the auxiliary piece body 54 is wound into a reel structure, and the reel structure is located inside the cavity 111. A rotating shaft 101 is provided in the cavity 111. This rotating shaft 101 can be fixed to the inner wall of the cavity 111, so that the auxiliary piece 5 is wound around the rotating shaft 101 to form a reel, and the auxiliary piece 5 is rotatable relative to the rotating shaft 101. Or this rotating shaft 101 is rotatably arranged in the cavity 111, and the second fixing part of the auxiliary piece 5 is fixed on the rotating shaft 101 and can rotate together with the rotating shaft 101. When the auxiliary piece 5 needs to be used, when the operator holds the second end 51 of the auxiliary piece 5 and pulls out the auxiliary piece body 54 outward, the reel structure part of the auxiliary piece body 54 gradually unfolds and covers the staple cartridge surface 12 until the auxiliary piece 5 enters the unfolded state. In this embodiment, by winding the auxiliary piece body 54 into a reel structure, on the one hand, the space volume occupied by the auxiliary piece 5 during storage can be reduced, and on the other hand, the pulling out of the auxiliary piece 5 during use is smoother, and the auxiliary piece body 54 is laid more flatly on the staple cartridge surface 12. In another alternative embodiment, the rotating shaft 101 may not be provided, and the second fixing part of the auxiliary piece 5 itself is wound to form a shaft. An arc-shaped groove 161 adapted to the reel structure is formed on the upper surface of the assembly plate 16, and the surface of the arc-shaped groove 161 contacts the outermost circle of the reel structure, which can provide support for the auxiliary piece 5 in the storage state. In another alternative embodiment, there may be a certain longitudinal gap between the upper surface of the assembly plate 16 and the reel structure, and there may be a certain longitudinal gap between the reel structure and the upper wall surface of the cavity 111, leaving more movement space for the auxiliary piece 5, so that the auxiliary piece 5 is more smoothly pulled out.

[0093] Figures 17 - 20 It is a schematic structural view of the clamp assembly of the fourth embodiment of the present application. The difference between this embodiment and the first embodiment is that: a hawk beak part 91 is further provided at the distal end 11 of the staple cartridge 1, and the hawk beak part 91 is rotatably connected to the distal end 11 of the staple cartridge 1. Specifically, in this embodiment, a rotating shaft fixing hole 103 is provided at the distal end 11 of the staple cartridge 1, and a hawk beak rotating shaft 92 is provided at the proximal end of the hawk beak part 91. The hawk beak rotating shaft 92 passes through the rotating shaft fixing hole 103, so that the hawk beak part 91 is rotatable relative to the distal end 11 of the staple cartridge 1. The hawk beak part 91 is arranged on the distal side of the cavity 111, and the rotation of the hawk beak part 91 does not affect the storage of the auxiliary piece 5 in the cavity 111. A guiding part 102 with an inner concave arc surface may also be provided on the distal end surface of the staple cartridge 1 to limit and guide the rotational movement of the hawk beak part 91. In another alternative embodiment, the hawk beak rotating shaft may also be fixed to the distal end 11 of the staple cartridge 1, and the hawk beak part 91 is rotatably mounted on the hawk beak rotating shaft. Figure 17 and Figure 20Two states of the rotation of the beak member 91 are respectively shown. By providing the rotatable beak member 91, when the staple cartridge 1 is placed in the surgical position, the beak member 91 can be rotated to Figure 20 the state where it is easier for the distal end of the staple cartridge 1 to enter blood vessels and tissue spaces.

[0094] In the above embodiments, the distal end 11 of the staple cartridge 1 is provided with a second fixing member 42 and the proximal end is provided with a first fixing member 41 as an example for illustration. In an alternative embodiment, the fixing manner of the second end 51 of the auxiliary piece 5 and the distal end 11 of the staple cartridge 1 may also be different from the above embodiments. For example, without providing the second fixing member 42, making the thickness of the second end 51 of the auxiliary piece 5 greater than the opening size of the first opening 112, so that the auxiliary piece 5 will not completely retract into the cavity 111, and clamping the second end 51 of the auxiliary piece 5 in the distal end 11 of the staple cartridge 1 in the storage state. Or, the second end 51 of the auxiliary piece 5 and the distal end 11 of the staple cartridge 1 are fixed by means of clamping, bonding, etc. The fixing manner of the second end 51 of the auxiliary piece 5 and the proximal end of the staple cartridge 1 may also be different from the above embodiments. For example, the second end 51 of the auxiliary piece 5 and the proximal end of the staple cartridge 1 are fixed by means of clamping or bonding. A chute extending axially may also be provided on the staple cartridge surface 12, a slider is provided at the second end 51 of the auxiliary piece 5, the slider enters the chute and can move axially, and a clamping groove or other fixing structure for fixing the slider is provided at the proximal end and / or the distal end of the chute. Only several alternative embodiments are listed here, and the cooperation manner between the auxiliary piece 5 and the staple cartridge surface 12 in each of the above embodiments can be replaced, and all belong to the protection scope of the present application.

[0095] In the above embodiments, the distal end 11 of the staple cartridge 1 storing the auxiliary piece 5 is taken as an example for illustration. In other alternative embodiments, the distal end of the anvil 9 may also store the auxiliary piece 5. When the auxiliary piece 5 is in the storage state, the auxiliary piece 5 is stored in the cavity 111 at the distal end of the anvil 9. When the auxiliary piece 5 is in the deployed state, at least a part of the auxiliary piece body 54 covers the anvil surface of the anvil 9. In other alternative embodiments, an auxiliary piece 5 may also be stored at the distal end 11 of the staple cartridge 1 and the distal end of the anvil 9 respectively, which also belongs to the protection scope of the present application.

[0096] 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 belongs, without departing from the concept of the present application, several simple deductions or replacements can still be made, and all should be regarded as belonging to the protection scope of the present application.

Claims

1. A clamping assembly, characterized in that, For a surgical stapler, the clamping assembly comprises: A clamp, inside the distal end of which there is a hollow cavity; An auxiliary sheet, which has a retracted state and an unfolded state. When the auxiliary sheet is in the retracted state, at least a part of the first end of the auxiliary sheet is received inside the cavity, and the second end of the auxiliary sheet is located at the distal end of the clamp and outside the cavity; when the auxiliary sheet is in the unfolded state, the second end of the auxiliary sheet is located at the proximal end of the clamp, and the auxiliary sheet at least partially covers the surface of the clamp.

2. The clamp assembly according to claim 1, wherein, The second end of the auxiliary sheet is provided with a first fixing part. When the auxiliary sheet is in the unfolded state, the first fixing part is fixed to the proximal surface of the clamp; and / or when the auxiliary sheet is in the retracted state, the first fixing part is mounted on the distal surface of the clamp.

3. The clamp assembly according to claim 2, wherein, The proximal end of the clamp is provided with a first fixing member, and the first fixing part of the auxiliary sheet is provided with a mounting hole. When the auxiliary sheet is in the unfolded state, the mounting hole is sleeved outside the first fixing member. The assembly further comprises a cutter. When the cutter moves from the proximal end to the distal end of the clamp, the cutter cuts the hole wall of the mounting hole.

4. The clamp assembly according to claim 1, wherein, The distal surface of the clamp is provided with a first opening and a receiving groove, the first opening is communicated with the cavity, and the receiving groove is at least partially located on the proximal side of the first opening. When the auxiliary sheet is in the retracted state, the auxiliary sheet passes through the first opening, and the second end of the auxiliary sheet is located in the receiving groove, and the surface of the auxiliary sheet does not protrude from the surface of the clamp.

5. The clamp assembly according to claim 4, characterized in that, A second fixing member is provided in the receiving groove of the clamp, and the top height of the second fixing member is lower than or equal to the surface height of the clamp.

6. The clamp assembly according to claim 1, wherein, It further comprises an assembly plate. The distal wall surface of the clamp is provided with a second opening, the second opening is communicated with the cavity, the assembly plate is detachably connected to the clamp, and the assembly plate at least partially covers the second opening.

7. The clamp assembly according to claim 1, characterized in that, When the auxiliary sheet is in the retracted state, the auxiliary sheet is at least partially folded into a multi-layer structure, and the multi-layer structure is located inside the cavity.

8. The clamp assembly according to claim 7, wherein, The stacking direction of the multi-layer structure is perpendicular to the axial direction of the clamp or parallel to the axial direction of the clamp.

9. The clamp assembly according to claim 1, wherein An installation member is further provided inside the cavity. The first end of the auxiliary sheet is provided with a second fixing part, the second fixing part is connected to the installation member, and the installation member can move along the axial direction of the clamp relative to the side wall of the cavity.

10. The clamp assembly according to claim 9, wherein, The side wall of the cavity is provided with a chute extending along the axial direction, the installation member is provided with a sliding part, at least a part of the sliding part is located in the chute, and can move along the extending direction of the sliding part.

11. The clamp assembly according to claim 1, wherein, The auxiliary sheet comprises an auxiliary sheet body and a second fixing part. The second fixing part is located inside the cavity. A cutting member is further provided inside the cavity. At least a part of the cutting member is located on the proximal side of the second fixing part. When the cutting member is driven to move towards the auxiliary sheet, the cutting member cuts the auxiliary sheet so that the auxiliary sheet body is separated from the second fixing part.

12. The clamp assembly according to claim 11, wherein, It also includes a firing piece, and the interior of the cavity is also provided with a driving piece linked to the cutting piece. When the firing piece is driven to move from the proximal end of the clamp to the distal end of the clamp, the firing piece drives the cutting piece to move toward the auxiliary piece through the driving piece.

13. The clamp assembly according to claim 12, characterized in that, The jaws are provided with a cutting groove extending along the axial direction of the jaws, and the proximal end of the driving member is at least partially located inside the distal end of the cutting groove.

14. The clamp assembly according to claim 12, characterized in that, The inner wall of the cavity is provided with at least one supporting portion, the supporting portion is located on the proximal side of the second fixing portion, a first gap is defined between the top end of the supporting portion and the upper wall of the cavity, and the auxiliary piece is passed through the first gap.

15. The clamp assembly according to claim 14, characterized in that, The proximal side surface of the support portion is a guide surface extending longitudinally, and the distal side of the cutting member or the driving member is abutted against the guide surface of the support portion. When the driving member is driven by the firing member in the distal direction, the cutting member is driven to move longitudinally along the guide surface.

16. The clamp assembly according to claim 1, wherein, The distal end of the clamp includes a guide surface inclined toward the bottom surface, or the distal end of the clamp includes an olecranon portion bent and tilted upward.

17. The clamp assembly according to claim 1, wherein, When the auxiliary sheet is in the storage state, the auxiliary sheet is at least partially wound into a reel structure, and the reel structure is located inside the cavity.

18. The clamp assembly according to claim 1, wherein, The distal end of the clamp is further provided with a beak piece, and the beak piece is rotatably connected to the distal end of the clamp.

19. A surgical stapler, characterized in that, A clamp assembly comprising the clamp assembly of any one of claims 1 to 18.

Images