CN221205536U - Jaw assembly and surgical stapler - Google Patents

Abstract

The application provides a jaw assembly and a surgical stapler, wherein the jaw assembly comprises: a hollow cavity is formed in the distal end of the clamp; the auxiliary sheet is in a storage state and an unfolding state, when the auxiliary sheet is in the storage state, the first end of the auxiliary sheet is at least partially stored in the cavity, and the second end of the auxiliary sheet is positioned at the far 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 positioned at the proximal end of the clamp, and the auxiliary sheet at least partially covers the surface of the clamp. The application provides a multifunctional clamp with an auxiliary sheet storage function, which is characterized in that an auxiliary sheet is stored in a cavity at the far end of the clamp, when the clamp is not used, the auxiliary sheet can be stored, and when the clamp is needed to be used, the auxiliary sheet can be conveniently taken out from the cavity.

Description

Jaw assembly and surgical stapler

Technical Field

The application relates to the technical field of medical instruments, in particular to a jaw assembly and a surgical stapler.

Background

The surgical stapler includes a stapler body and an implement end at a distal end of the stapler. The anastomat body comprises a firing assembly, the actuating end comprises two jaws which are oppositely arranged, and the proximal ends of the two jaws can be rotatably connected, so that the jaws between the two jaws can be opened and closed. During operation, the executing end is placed at an operation position, the jaw between the two jaws is adjusted to gradually clamp tissues, and the anastomat in one jaw is pushed out to the other jaw, so that the anastomat is sutured on the tissues.

In some procedures, it is desirable to provide auxiliary panels on the surface of one or both jaws for reinforcing and stiffening the stoma, which auxiliary panels can be sutured to the tissue together with the staples during the procedure. The existing auxiliary sheet and the clamp are often separated parts, are separated during transportation and storage, and are mounted on the surface of the clamp after being taken out from the storage device during use, so that the structure is complex, and the use is quite inconvenient.

Disclosure of utility model

In view of the problems in the prior art, an object of the present application is to provide a jaw assembly and a surgical stapler, which provide a multifunctional jaw with a function of receiving an auxiliary sheet, wherein the auxiliary sheet is received in a cavity at a distal end of the jaw, and when not in use, the jaw can store the auxiliary sheet, and when in use, the auxiliary sheet can be conveniently taken out from the cavity.

Embodiments of the present application provide a jaw assembly for a surgical stapler, the jaw assembly comprising:

a hollow cavity is formed in the distal end of the clamp;

The auxiliary sheet is in a storage state and an unfolding state, when the auxiliary sheet is in the storage state, the first end of the auxiliary sheet is at least partially stored in the cavity, and the second end of the auxiliary sheet is positioned at the far 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 positioned at the proximal end of the clamp, and the auxiliary sheet at least partially covers the surface of the clamp.

In some embodiments, the second end of the auxiliary sheet is provided with a first fixing portion, and the first fixing portion is fixed to the proximal end surface of the jaw when the auxiliary sheet is in the unfolded state; and/or, when the auxiliary sheet is in the storage state, the first fixing part is mounted on the distal end surface of the jaw.

In some embodiments, a first fixing piece is arranged at the proximal end of the jaw, a mounting hole is formed in the first fixing portion of the auxiliary piece, and the mounting hole is sleeved outside the first fixing piece when the auxiliary piece is in the unfolded state;

the assembly further includes a cutter that cuts the wall of the mounting hole as the cutter moves in a distal direction from the proximal end of the jaws.

In some embodiments, the distal surface of the jaw is provided with a first opening in communication with the cavity and a receiving groove at least partially on a proximal side of the first opening;

When the auxiliary sheet is in the storage state, the auxiliary sheet is arranged in the first opening in a penetrating mode, the second end of the auxiliary sheet is located in the containing groove, and the surface of the auxiliary sheet does not protrude out of the surface of the clamp.

In some embodiments, a second securing member is disposed in the receiving slot of the jaw and has a top height that is less than or equal to a surface height of the jaw.

In some embodiments, the distal wall of the jaw is provided with a second opening in communication with the cavity, the mounting plate is removably coupled to the jaw, and the mounting plate at least partially covers the second opening.

In some embodiments, the auxiliary sheet is folded at least partially into a multi-layer structure when the auxiliary sheet is in the stowed state, and the multi-layer structure is located inside the cavity.

In some embodiments, the stacking direction of the multilayer structure is perpendicular to the axial direction of the jaws or parallel to the axial direction of the jaws.

In some embodiments, a mounting member is further disposed within the cavity, and the first end of the auxiliary piece is provided with a second fixing portion, the second fixing portion being connected to the mounting member, and the mounting member being movable relative to the side wall of the cavity in the axial direction of the jaw.

In some embodiments, the side wall of the cavity is provided with a chute extending in the axial direction, and the mounting member is provided with a sliding portion at least partially located in the chute and movable in the extending direction of the sliding portion.

In some embodiments, the auxiliary sheet comprises an auxiliary sheet body and a second fixing portion, the second fixing portion is located in the cavity, a cutting member is further disposed in the cavity, the cutting member is located at least partially on a proximal side of the second fixing portion, and when the cutting member is driven to move toward the auxiliary sheet, the cutting member cuts the auxiliary sheet body to separate the auxiliary sheet body from the second fixing portion.

In some embodiments, the device further comprises a firing member, wherein a driving member linked with the cutting member is further arranged in the cavity, and the firing member drives the cutting member to move towards the auxiliary sheet through the driving member when the firing member is driven to move from the proximal end of the clamping jaw to the distal end of the clamping jaw.

In some embodiments, the jaws are provided with a cutter slot extending in an axial direction of the jaws, and the proximal end of the driver is at least partially inside the distal end of the cutter slot.

In some embodiments, the inner wall of the cavity is provided with at least one supporting portion, the supporting portion is located at the proximal end side of the second fixing portion, a first gap is formed between the top end of the supporting portion and the upper wall of the cavity, and the auxiliary piece is arranged in the first gap in a penetrating mode.

In some embodiments, the proximal side of the support portion is a guide surface extending in a longitudinal direction, the distal side of the cutting member or the driving member abuts against the guide surface of the support portion, and the driving member drives the cutting member to move in the longitudinal direction along the guide surface when being driven in the distal direction by the firing member.

In some embodiments, the distal end of the jaw includes a guide surface that is inclined toward the bottom surface, or the distal end of the jaw includes an upwardly curved, upturned olecranon portion.

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

In some embodiments, the distal end of the jaw is further provided with a olecranon piece rotatably connected to the distal end of the jaw.

The embodiment of the application also provides a surgical anastomat, which comprises the jaw assembly.

The jaw assembly and the surgical stapler provided by the application have the following advantages:

The application provides a multifunctional clamp with an auxiliary sheet containing function, which is characterized in that an auxiliary sheet is contained in a cavity at the far end of the clamp, other auxiliary sheet storage devices are not needed to be additionally provided, the overall cost is reduced, when the anastomat is not used, the clamp can store the auxiliary sheet, for example, the auxiliary sheet is not needed to be used in operation, the containing state of the auxiliary sheet in the cavity can be kept, the normal use of the anastomat is not influenced, the auxiliary sheet can be conveniently taken out from the cavity when the auxiliary sheet is needed to be used, the auxiliary sheet is unfolded and paved on the surface of the clamp, and the auxiliary sheet can be sewn on tissues together with anastomat nails to strengthen and strengthen the tissues.

Drawings

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

FIG. 1 is a schematic diagram of an execution end of a first embodiment of the present application;

FIG. 2 is a schematic view of the structure of a jaw assembly according to a first embodiment of the application;

FIG. 3 is a top view of a jaw assembly according to a first embodiment of the application;

FIG. 4 is a cross-sectional view taken along the direction A-A in FIG. 3;

FIG. 5 is an enlarged view of a portion of the distal end of FIG. 4;

FIG. 6 is a schematic view of the structure of a staple cartridge of the first embodiment of the present application;

FIG. 7 is a side view of the jaw assembly of the first embodiment of the present application with the staple cartridge omitted;

FIG. 8 is a schematic view of the mating of the auxiliary sheet with the cutting member and the mounting member of the first embodiment of the present application;

FIG. 9 is a schematic view of the anvil and mounting plate of the first embodiment of the present application;

FIG. 10 is a schematic view of the jaw assembly of the first embodiment of the present application with the auxiliary sheet pulled out;

FIG. 11 is a schematic view of the jaw assembly with the auxiliary panel of the first embodiment of the application in an expanded state;

FIG. 12 is a close-up view of the distal end of FIG. 11;

fig. 13 is a schematic structural view of an auxiliary sheet according to the first embodiment of the present application;

FIG. 14 is a schematic view of the structure of a staple cartridge of a second embodiment of the present application;

FIG. 15 is a cross-sectional view of a jaw assembly according to a third embodiment of the application;

FIG. 16 is a close-up view of the distal end of FIG. 15;

FIG. 17 is a schematic view of a fourth embodiment of a jaw assembly of the present application;

FIG. 18 is a schematic view of a fourth embodiment of the olecranon piece of the present application;

FIG. 19 is a schematic view of a fourth embodiment of the application with the olecranon omitted jaw assembly;

FIG. 20 is a schematic view of a fourth embodiment of the present application with the olecranon rotated.

Reference numerals:

1. Nail bin 2 nail bin frame

11. Distal end 31 firing member of staple cartridge

111. Cavity 32 nail pusher

112. First opening 33 cutter

113. Second opening 41 first fixing piece

114. Guide surface 42 second fixing member

115. Hawk mouth 5 auxiliary piece

116. Second end of auxiliary sheet of accommodation groove 51

12. First fixing portion of the cartridge face 52

13. Second fixing portion of nail hole 53

14. Cutter groove 54 auxiliary sheet body

15. 55-Point broken line of mounting groove

16. Cutting groove of assembly plate 56

161. First end of auxiliary sheet of cambered surface groove 57

17. Mounting member 81 cutting member

171. Sliding part 82 driving piece

18. Sliding groove 821 driving surface

19. Nail anvil with support 9

101. Rotary shaft 91 olecranon part

102. Guide 92 olecranon shaft

103. Rotating shaft fixing hole

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments can be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus a repetitive description thereof will be omitted. "or", "or" in the specification may each mean "and" or ". Although the terms "upper", "lower", "between", etc. may be used in this specification to describe various exemplary features and elements of the application, these terms are used herein for convenience only, e.g., in terms of the orientation of the examples depicted in the drawings. Nothing in this specification should be construed as requiring a particular three-dimensional orientation of the structure in order to fall within the scope of the application. Although the terms "first" or "second" etc. may be used herein to describe certain features, these features should be interpreted in a descriptive sense only and not for purposes of limitation as to the number and importance of the particular features.

The application provides a jaw assembly for a surgical stapler and a surgical stapler comprising the same. The jaw assembly includes a jaw having a hollow cavity disposed within a distal end of the jaw. The auxiliary sheet is in a storage state and an unfolding state, when the auxiliary sheet is in the storage state, the first end of the auxiliary sheet is at least partially stored in the cavity, and the second end of the auxiliary sheet is located at the far end of the clamp and outside the cavity. Therefore, the multifunctional forceps holder with the auxiliary sheet storage function is capable of storing auxiliary sheets in the cavity at the far end of the forceps holder, other auxiliary sheet storage devices are not needed to be additionally provided, the overall cost is reduced, when the anastomat is not used, the forceps holder can store the auxiliary sheets, for example, the auxiliary sheets are not needed to be used in operation, the storage state of the auxiliary sheets in the cavity can be maintained, and the normal use of the anastomat is not influenced.

When the auxiliary sheet is required to be used, the auxiliary sheet is pulled out from the cavity, so that after the auxiliary sheet enters the unfolding state, the second end of the auxiliary sheet is positioned at the proximal end of the clamp, and the auxiliary sheet at least partially covers the surface of the clamp. When the anastomat is triggered, after the anastomat is pushed out, the auxiliary sheet can be sewn on the tissues together with the anastomat to strengthen and strengthen the tissues.

The structure of the jaw assembly in the exemplary embodiment is described in detail below with reference to the accompanying drawings. It is to be understood that the drawings and the following description are only exemplary and are not intended to limit the scope of the application.

As shown in fig. 1 and 2, the jaw assembly includes jaws. In this embodiment, the case of the cartridge 1 is taken as an example of the jaw assembly, the cartridge 1 is used for accommodating the staples, and a cartridge holder 2 for accommodating the cartridge 1 is provided outside the cartridge 1. The jaw assembly and anvil 9 are disposed opposite one another and together form the actuating end of the surgical stapler. The surgical anastomat comprises an execution end and an anastomat body arranged at the proximal end of the execution end, wherein a pushing cutter bar is arranged in the anastomat body. In other alternative embodiments, the jaws of the jaw assembly may be an anvil 9, and are within the scope of the present application. In the present application, the distal end and the proximal end are the proximal end with respect to the operator, the end closer to the operator, the end farther from the operator, i.e., the end closer to the surgical site, is the distal end. Axial refers to the axial direction of the cartridge assembly, i.e., the direction of extension of the cartridge assembly, i.e., the S1 direction or the opposite direction to S1 in fig. 1, 3, 4. In the view of fig. 2, the distal end is the left end and the proximal end is the right end for cartridge 1. The S2 direction in fig. 3 represents the lateral direction, i.e., the width direction, and the S3 direction in fig. 4 represents the longitudinal direction, i.e., the height direction.

As shown in fig. 2 to 5, the jaw assembly further comprises a cutter 33, a firing member 31, a plurality of staple pushing members 32 positioned inside the staple cartridge 1, and an auxiliary sheet 5 receivable at the distal end of the staple cartridge 1. The nail bin 1 comprises a nail bin surface 12, a plurality of nail holes 13 are formed in the nail bin 1, and the nail holes 13 are formed in the nail bin surface 12. The cartridge 1 is further provided with axially extending cutter slots 14. In the initial state, the cutter 33 and the trigger 31 are both positioned at the proximal end of the cartridge 1, and the cutter 33 is positioned at the proximal end of the trigger 31. The ejector 32 and the staples are accommodated in the nail holes 13, and the ejector 32 is provided below the staples. In the process of anastomat firing, the cutter 33 is driven to move along the cutter groove 14 in the distal direction, the cutter 33 drives the firing member 31 to move in the distal direction, the firing member 31 pushes the staple pushing member 32 in the direction of the anvil 9, so that the staples are pushed out towards the direction of the anvil 9 to be sutured on the tissues, and meanwhile, the cutter 33 cuts the tissues to complete suturing and cutting of the tissues, namely, the firing of the anastomat is completed.

The distal end 11 of the cartridge 1 is internally provided with a hollow cavity 111. The auxiliary sheet 5 has a housed state shown in fig. 4 and 5 and an expanded state shown in fig. 11. As shown in fig. 4 and 5, the auxiliary panel 5 includes a first end 57 and a second end 51. In the initial state, the auxiliary sheet 5 is in the storage state, the first end 57 of the auxiliary sheet 5 is at least partially stored in the cavity 111, and the second end 51 of the auxiliary sheet 5 is located at the distal end 11 of the staple cartridge 1 and outside the cavity 111. Therefore, the nail bin 1 is a multifunctional nail bin 1 with the function of accommodating the auxiliary sheet 5, the auxiliary sheet 5 is accommodated in the cavity 111 at the far end of the nail bin 1, other auxiliary sheet storage devices are not required to be additionally provided, the overall cost is reduced, when the anastomat is not used, the auxiliary sheet 5 can be stored in the nail bin 1, for example, the auxiliary sheet 5 is not required to be used in operation, the accommodating state of the auxiliary sheet 5 in the cavity can be maintained, and the normal use of the anastomat is not influenced.

When the auxiliary sheet 5 is required to be used, an operator holds the second end of the auxiliary sheet 5, pulls the auxiliary sheet 5 towards the proximal end of the staple cartridge 1, so that the auxiliary sheet 5 is pulled out from the cavity 111, and the auxiliary sheet 5 enters the unfolded state. As shown in fig. 11, when the auxiliary sheet 5 is in the unfolded state, the second end 51 of the auxiliary sheet 5 is located at the proximal end of the staple cartridge 1, the auxiliary sheet body 54 at least partially covers the surface of the staple cartridge 1, the width of the auxiliary sheet body 54 is optionally greater than or equal to the distance between the two outermost rows of staple holes 13, and the length of the auxiliary sheet body 54 is optionally greater than or equal to the distance between the most distal staple holes 13 and the most proximal staple holes 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 anastomat is triggered, after the anastomat is pushed out, the auxiliary sheet 5 can be sewn on the tissues together with the anastomat to strengthen and strengthen the tissues. The auxiliary sheet 5 can be a soft biological patch, can be made of other biocompatible and soft materials, can play a role in reinforcing and strengthening an anastomotic stoma, and can further coat medicines with anti-inflammatory effect, hemostatic effect or other medical effects on the surface of the auxiliary sheet 5, thereby playing an auxiliary medical effect.

As shown in fig. 2, 5 and 6, the surface of the distal end 11 of the cartridge 1 is provided with a first opening 112, the first opening 112 communicates with the cavity 111, and the first opening 112 extends in the lateral direction of the cartridge 1. The auxiliary sheet 5 is inserted into the first opening 112. The auxiliary sheet 5 comprises an auxiliary sheet body 54, a first fixing portion 52 and a second fixing portion 53, wherein the first fixing portion 52 is arranged at the second end of the auxiliary sheet body 54, and the second fixing portion 53 is arranged at the first end of the auxiliary sheet body 54. The surface of the distal end 11 of the cartridge 1 is provided with a second fixing member 42, the second fixing member 42 being located on the proximal side of the first opening 112. When the auxiliary sheet 5 is in the storage state, the first fixing portion 52 of the auxiliary sheet 5 is located outside the cavity 111 and is fixed on the second fixing member 42, so that the first fixing portion 52 is prevented from being retracted into the cavity 111 and difficult to be extracted. When the auxiliary sheet 5 is needed, the operator separates the first fixing part 52 from the second fixing part 42, and then holds the second end 51 of the auxiliary sheet 5 to pull toward the proximal end of the staple cartridge 1, so that the auxiliary sheet body 54 can be pulled out, and the auxiliary sheet 5 is in a unfolded state.

The distal end 11 surface of the cartridge 1 is further provided with a receiving groove 116, the receiving groove 116 being at least partially located on the proximal side of the first opening 112. The second fixing member 42 is disposed in the receiving groove 116. When the auxiliary sheet 5 is in the storage state, the surface of the auxiliary sheet 5 does not protrude from the surface of the nail bin 1, when the auxiliary sheet 5 is not needed to be used in an operation, the auxiliary sheet 5 does not influence the normal matching of the nail bin 1 in a tissue at an operation position, and the top end height of the second fixing piece 42 is lower than or equal to the surface height of the nail bin 1, so that the second fixing piece 42 cannot cause traction damage to the tissue due to the protrusion of the surface height of the nail bin 1.

As shown in fig. 11 and 12, the proximal end of the staple cartridge 1 is provided with a first fixing member 41, and when the auxiliary sheet 5 is in the deployed state, the first fixing portion 52 is fixed to the proximal end surface of the staple cartridge 1 by the first fixing member 41, and the second fixing portion 53 of the auxiliary sheet 5 remains inside the cavity 111, so that the auxiliary sheet body 54 is deployed flatly to cover the staple cartridge face 12. As can be seen in fig. 2, 3 and 6, in this embodiment, the first fixing portion 52 of the auxiliary sheet 5 is provided with a mounting hole, the first fixing member 41 and the second fixing member 42 respectively include at least one boss, when the auxiliary sheet 5 is in the deployed state, the first fixing portion 52 may be sleeved on the outside of the first fixing member 41 to fix the second end 51 of the auxiliary sheet 5 at the proximal end of the staple cartridge 1, and when the auxiliary sheet 5 is in the accommodated state, the first fixing portion 52 may be sleeved on the outside of the second fixing member 42 to fix the proximal end of the staple cartridge 1 at the distal end of the staple cartridge 1. The proximal and distal ends of the cartridge 1 are provided with mounting slots 15, respectively, for mounting the first and second fasteners 41, 42. The first fixing member 41 and the second fixing member 42 may be fixed to the mounting groove by interference fit, welding, bonding, or the like. When the operator pulls out the auxiliary sheet 5 to be in the unfolded state, the mounting hole is sleeved outside the first fixing member 41. The mounting hole is a closed hole. During the firing process of the anastomat, the cutter 33 moves in the distal direction, and cuts off the wall of the distal side of the mounting hole when moving to the first fixing piece 41, so that the mounting hole becomes an unsealed hole, and the mounting hole can be separated from the first fixing piece 41, so that the second end 51 of the auxiliary piece 5 is separated from the nail bin surface 12. The structures of the first fixing portion 52, the first fixing member 41, and the second fixing member 42 are only examples herein. In another alternative embodiment, the first fixing portion 52 may be a protruding portion, the first fixing member 41 and the second fixing member 42 may be grooves, and the first fixing portion 52 may form an embedded fit with the first fixing member 41 or the second fixing member 42, which falls within the protection scope of the present application.

As shown in fig. 5 and 9, the jaw assembly further comprises a mounting plate 16, a wall surface of the distal end 11 of the cartridge 1 is provided with a second opening 113, the second opening 113 is in communication with the cavity 111, the mounting plate 16 is detachably connected to the cartridge 1, and the mounting plate 16 at least partially covers the second opening 113. Through said second opening 113 the auxiliary tablet 5 in the cavity 111 can be mounted and replaced. For example, when it is desired to mount the auxiliary sheet 5 in the cavity 111, the mounting plate 16 is removed from the cartridge 1, the auxiliary sheet 5 is inserted into the cavity 111 through the second opening 113, and then the mounting plate 16 is mounted on the cartridge 1 to retain the auxiliary sheet 5 within 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 can be taken out through the second opening 113, and a new auxiliary sheet 5 can be loaded through the second opening 113. In this embodiment, the second opening 113 is formed on the bottom surface of the distal end 11 of the cartridge 1, and the mounting plate 16 is a bottom plate, and has the function of supporting the auxiliary sheet 5. In other alternative embodiments, the second opening 113 may also be formed on the side wall of the distal end 11 or the upper wall surface of the distal end 11 of the staple cartridge 1, which falls within the protection scope of the present application.

As shown in fig. 4 to 7, when the auxiliary sheet 5 is in the storage state, the auxiliary sheet 5 is at least partially folded into a multi-layered structure, and the multi-layered structure is located inside the cavity 111. Through folding into multilayer structure with assisting piece 5, be favorable to reducing the accomodating volume of assisting piece 5 for assisting piece 5 is more smooth and easy when being taken out. In this embodiment, the stacking direction of the multilayer structure is parallel to the axial direction of the cartridge 1, so the stacking direction is the same as the direction in which the auxiliary sheet 5 is extracted, so that the auxiliary sheet 5 is sequentially extracted from the second end 51 to the first end 57 of the auxiliary sheet 5 when extracted, and the auxiliary sheet 5 can be laid more smoothly on the cartridge face 12. In another alternative embodiment, the stacking direction of the multilayer structure may be perpendicular to the axial direction of the cartridge 1, or other directions may be adopted, and are within the scope of the present application. The inside of the cavity 111 is also provided with a mounting piece 17, 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 with the mounting piece 17. For example, the second fixing portions 53 may be fixed to each other by being engaged with, adhered to, fitted to, or the like, the mounting member 17. The mounting member 17 is movable relative to the side wall of the cavity 111 in the axial direction of the cartridge 1. Specifically, the side wall of the cavity 111 is provided with a chute 18 extending in the axial direction, the mounting member 17 is provided with a sliding portion 171, and the sliding portion 171 is at least partially located in the chute 18 and is movable in the extending direction of the sliding portion 171.

In this embodiment, a cutting member 81 is also provided inside the cavity 111. The tip of the cutter 81 is formed into a sharp blade shape. The cutting member 81 is at least partially located on the proximal side of the second fixing portion 53. When no external force is applied, a certain gap exists between the top end of the cutting member 81 and the auxiliary sheet 5 in the longitudinal direction, so that the cutting member 81 does not contact the auxiliary sheet 5 to damage the auxiliary sheet 5. When the cutter 81 is driven to move toward the auxiliary sheet 5, the cutter 81 moves upward to cut the auxiliary sheet 5 by the blade at the tip end, so that the auxiliary sheet body 54 is separated from the second fixing portion 53, and the second fixing portion 53 is left in the cavity 111 and the auxiliary sheet body 54 is sutured on the tissue with the staples, so that the second fixing portion 53 is prevented from affecting the normal closing formation of the staples. The cavity 111 is also provided with a driving member 82 which is linked with the cutting member 81. The proximal end of the driving member 82 is at least partially disposed within the distal end of the cutter slot 14, and the driving member 82 is drivable by the firing member 31. The proximal end side of the driving member 82 is provided with an inclined driving surface 821 to convert the driving force of the firing member 31 in the distal direction into an upward driving force and transmit the upward driving force to the cutting member 81. Upon firing of the stapler, the firing member 31 is driven from the proximal end of the cartridge 1 to the distal end 11 of the cartridge 1, the firing member 31 driving the cutting member 81 toward the auxiliary blade 5 via the driving member 82. After the anastomat is completely triggered, the assembly plate 16 can be removed, the residual second fixing part 53 is taken out from the second opening 113, and a new auxiliary sheet 5 is put in, so that the replacement is very convenient.

In this embodiment, at least one supporting portion 19 is disposed on the inner wall of the cavity 111, the supporting portion 19 is located on the proximal side of the second fixing portion 53, a first gap is formed between the top end of the supporting portion 19 and the upper wall of the cavity 111, the auxiliary sheet 5 is disposed in the first gap in a penetrating manner, by disposing the supporting portion 19, the auxiliary sheet 5 can be supported to a certain extent, which is beneficial to maintaining stability of the auxiliary sheet 5 in the cavity 111, and the auxiliary sheet 5 can be maintained above the cutting member 81 without being accidentally cut by the cutting member 81. The proximal side of the supporting portion 19 is a guiding surface extending in a 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, and when the driving member 82 receives the driving force of the firing member 31 in the distal direction, the cutting member 81 is driven to move in a longitudinal direction along the guiding surface.

In this embodiment, the distal end 11 of the cartridge 1 includes a guide surface 114 that is sloped toward the bottom surface so that the distal end 11 of the cartridge 1 can also act as a distal guide for the cartridge 1, guiding the cartridge 1 to the surgical site more easily. In fig. 6, the upper surface of the distal end 11 of the cartridge 1 is illustratively shown as an inclined guiding surface 114, and in other embodiments, the lower surface or both the upper and lower surfaces of the distal end 11 of the cartridge 1 may be formed as inclined guiding surfaces, and the guiding surface 114 may be an inclined plane or an inclined curved surface, or the upper and lower surfaces of the distal end 11 of the cartridge 1 may be parallel to the plane of the cartridge surface 12, respectively, without the distal end 11 of the cartridge 1 having to perform guiding action.

As shown in fig. 13, the auxiliary sheet body 54 is provided with a dot line 55. When the auxiliary sheet 5 is in the unfolded state, the point breaking line 55 corresponds to the position of the cutter groove 14, that is, the projection of the point breaking line 55 on the nail bin surface 12 of the nail bin 1 is at least partially overlapped with the cutter groove 14. The first end of the auxiliary sheet body 54 is provided with a cutting groove 56, and the cutting groove 56 is opened at the first end 57 of the auxiliary sheet 5 and extends a distance in the axial direction toward the second end 51 of the auxiliary sheet 5. When the stapler is fired, the cutter 33 is moved to the distal end of the cutter slot 14, the cutter 33 at least partially enters the cutting slot 56, thereby completely cutting the first end of the auxiliary sheet body 54. Correspondingly, the cutting member 81 may be configured as a complete one as shown in fig. 8, or one cutting member 81 may be respectively disposed on two lateral sides of the axial center of the staple cartridge 1, and the auxiliary sheet body 54 on two sides of the cutting slot 56 may be cut by the cutting member 81, so that the auxiliary sheet body 54 and the second fixing portion 53 may be separated.

The working principle of the jaw assembly of this embodiment will therefore be described in detail below with reference to fig. 4, 5 and 10 to 12. As shown in fig. 4 and 5, in the initial state, the auxiliary sheet 5 is in the storage state, the second fixing portion 53 of the auxiliary sheet 5 is fixed to the mounting member 17, and the auxiliary sheet body 54 is folded to form a multi-layered structure and stored in the cavity 111 with the mounting member 17 located at the distal end of the cavity 111, and the first fixing portion 52 is fixed to the second fixing member 42 through the first opening 112. The cutter 33 and the firing member 31 are both positioned at the proximal end of the cartridge 1, and the staple pusher 32 and staples are received in the staple holes 13. There is a longitudinal gap between the tip of the cutting member 81 and the auxiliary sheet 5 so that the cutting member 81 does not contact the auxiliary sheet 5. As shown in fig. 10, when the auxiliary sheet 5 is needed, the operator separates the first fixing portion 52 of the auxiliary sheet 5 from the second fixing member 42, and holds the second end 51 of the auxiliary sheet 5 to withdraw the auxiliary sheet 5 in the proximal direction of the staple cartridge 1, the auxiliary sheet 5 gradually releases the multi-layer structure during the withdrawal process, the first fixing portion 52 of the auxiliary sheet 5 moves in the proximal direction, and the auxiliary sheet body 54 gradually covers the staple cartridge face 12. As shown in fig. 11, when the second end 51 of the auxiliary sheet 5 is pulled in the proximal direction after the multi-layered structure is completely released, the second fixing portion 53 of the auxiliary sheet 5 drives the mounting member 17 to move together in the proximal direction along the chute 18, 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 piece 41 at the proximal end of the cartridge 1, so that the auxiliary sheet body 54 covers the cartridge face 12. In the state of fig. 11, the operator fires the anastomat, the push knife bar inside the anastomat body drives the cutter 33 to move towards the distal direction, the cutter 33 drives the firing member 31 to move towards the distal direction, when the cutter 33 moves to the first fixing part 52, the distal hole wall of the mounting hole is cut, the first fixing part 52 is separated from the first fixing member 41, the second end 51 of the auxiliary sheet 5 is separated from the staple cartridge 1, then the cutter 33 continues to cut the point broken line 55 of the auxiliary sheet 5, the auxiliary sheet body 54 is separated into left and right halves, the firing member 31 moves towards the anvil 9 in the distal direction, staples are driven by the staples to be bound together on tissues by the push staple member 32, meanwhile, the cutter 33 moves to the distal cutting groove 56, the auxiliary sheet body 54 is completely cut into two halves, meanwhile, the driving member 31 moves to the distal end and the driving surface 821 of the driving member 82 is abutted against the driving surface 821 of the driving member 82, the driving force in the direction is converted into the driving force in the distal direction of the auxiliary sheet cutter member 81, the driving force is converted into the driving force in the driving direction of the auxiliary sheet 81, the driving surface is upwards separated from the auxiliary sheet body 821 of the staple 1, the stapling member 1 is smoothly separated from the stapling body 54, and the stapling body is left in the middle of the tissue by the stapling body is separated from the staple body by the anvil 9, and the stapling body is smoothly separated from the staple body by the staple body 53, and the stapling body is separated from the staple body by the staple 1, and the staple body is left in the staple body 53, and the stapling body is separated from the staple 1 by the driving part is left in the staple body, and the staple 5.

Fig. 14 is a schematic structural view of a staple cartridge 1 according to a 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 cartridge 1 comprises an upwardly curved cocked olecranon portion 115. The olecranon part 115 is upwardly curved in an olecranon shape. By providing the olecranon portion 115, the distal end of the cartridge 1 is made easier to access into the blood vessel and tissue space.

Fig. 15 and 16 are schematic structural views of a staple cartridge 1 according to a third embodiment of the present application. This embodiment differs from the first embodiment in that in the third embodiment, when the auxiliary sheet 5 is in the storage state, the auxiliary sheet body 54 is wound at least partially into a reel structure, and the reel structure is located inside the cavity 111. The cavity 111 is internally provided with a rotating shaft 101, the rotating shaft 101 can be fixed on the inner wall of the cavity 111, so that the auxiliary sheet 5 is wound into a reel around the rotating shaft 101, and the auxiliary sheet 5 can rotate relative to the rotating shaft 101, or the rotating shaft 101 can be rotatably arranged in the cavity 111, and the second fixing part of the auxiliary sheet 5 is fixed on the rotating shaft 101 and can rotate along with the rotating shaft 101. When the auxiliary sheet 5 is needed, the operator holds the second end 51 of the auxiliary sheet 5 to pull out the auxiliary sheet body 54, and the reel structure part of the auxiliary sheet body 54 is gradually unfolded to cover the nail bin surface 12 until the auxiliary sheet 5 enters the unfolded state. In this embodiment, by winding the auxiliary sheet body 54 into a reel structure, on one hand, the space volume occupied when the auxiliary sheet 5 is stored can be reduced, and on the other hand, the auxiliary sheet 5 is pulled out more smoothly when in use, and the auxiliary sheet body 54 is laid on the nail bin surface 12 more smoothly. In another alternative embodiment, the second fixing portion of the auxiliary sheet 5 itself may be wound to form one shaft without the rotation shaft 101. The upper surface of the assembly plate 16 forms a cambered surface groove 161 which is adapted to the reel structure, and the surface of the cambered surface groove 161 is contacted with the outermost ring of the reel structure, so that support can be provided for the auxiliary sheet 5 in the accommodating state. In another alternative embodiment, a certain longitudinal gap may be provided between the upper surface of the mounting plate 16 and the reel structure, and a certain longitudinal gap may be provided between the reel structure and the upper wall surface of the cavity 111, so that more active space is left for the auxiliary sheet 5, and the auxiliary sheet 5 is more smoothly drawn out.

Fig. 17 to 20 are schematic structural views of a jaw assembly according to a fourth embodiment of the present application. This embodiment differs from the first embodiment in that: the distal end 11 of the cartridge 1 is further provided with a olecranon piece 91, said olecranon piece 91 being rotatably connected to the distal end 11 of the cartridge 1. Specifically, in this embodiment, the distal end 11 of the cartridge 1 is provided with a spindle securing hole 103, the proximal end of the olecranon piece 91 is provided with an olecranon spindle 92, and the olecranon spindle 92 is threaded into the spindle securing hole 103 such that the olecranon piece 91 is rotatable relative to the distal end 11 of the cartridge 1. The olecranon piece 91 is provided on the distal side of the cavity 111, and rotation of the olecranon piece 91 does not affect the reception of the auxiliary sheet 5 in the cavity 111. The distal end surface of the nail bin 1 may further be provided with a guiding portion 102 with a concave cambered surface, so as to limit and guide the rotation of the olecranon 91. In another alternative embodiment, the olecranon shaft may be fixed to the distal end 11 of the cartridge 1, while the olecranon piece 91 is rotatably mounted on the olecranon shaft. Fig. 17 and 20 show two states of rotation of the olecranon piece 91, respectively. By providing the rotatable olecranon piece 91, the olecranon piece 91 can be rotated to the condition of fig. 20 when the cartridge 1 is placed in a surgical site, allowing the distal end of the cartridge 1 to more easily access the blood vessel, tissue space.

In the above embodiments, the distal end 11 of the cartridge 1 is provided with the second fixing member 42, and the proximal end is provided with the first fixing member 41. In alternative embodiments, the second end 51 of the auxiliary panel 5 may be secured to the distal end 11 of the staple cartridge 1 in a manner different from the above embodiments. For example, the second fixing member 42 is not provided, so that the thickness of the second end 51 of the auxiliary sheet 5 is greater than the opening size of the first opening 112, so that the auxiliary sheet 5 does not completely retract into the cavity 111, and the second end 51 of the auxiliary sheet 5 is clamped at the distal end 11 of the staple cartridge 1 in the accommodated state. Or the second end 51 of the auxiliary sheet 5 is fixed with the distal end 11 of the nail bin 1 by clamping, bonding and the like. The manner in which the second end 51 of the auxiliary panel 5 is secured to the proximal end of the staple cartridge 1 may also differ from the above embodiments. For example, the second end 51 of the auxiliary sheet 5 is secured to the proximal end of the cartridge 1 by means of a snap fit or adhesive. A sliding groove extending along the axial direction can be arranged on the nail bin surface 12, a sliding block is arranged at the second end 51 of the auxiliary sheet 5, the sliding block enters the sliding groove and can move along the axial direction, and a clamping groove or other fixing structure for fixing the sliding block is arranged at the proximal end and/or the distal end of the sliding groove. Only a few alternative embodiments are listed here, and the matching manner of the auxiliary sheet 5 and the nail bin surface 12 in the above embodiments can be replaced, which falls within the protection scope of the present application.

In the above embodiments, the distal end 11 of the staple cartridge 1 is taken as an example to house the auxiliary sheet 5. In other alternative embodiments, the distal end of the anvil 9 may be configured to receive the auxiliary sheet 5, where the auxiliary sheet 5 is received in the cavity 111 at the distal end of the anvil 9 when the auxiliary sheet 5 is in the received state, and where the auxiliary sheet body 54 at least partially covers the anvil surface of the anvil 9 when the auxiliary sheet 5 is in the deployed state. In other alternative embodiments, an auxiliary sheet 5 may be respectively received in the distal end 11 of the staple cartridge 1 and the distal end of the anvil 9, which is also within the scope of the present application.

The foregoing is a further detailed description of the application in connection with the preferred embodiments, and it is not intended that the application be limited to the specific embodiments described. It will be apparent to those skilled in the art that several simple deductions or substitutions may be made without departing from the spirit of the application, and these should be considered to be within the scope of the application.

Claims (19)

1. A jaw assembly for a surgical stapler, the jaw assembly comprising:

a hollow cavity is formed in the distal end of the clamp;

The auxiliary sheet is in a storage state and an unfolding state, when the auxiliary sheet is in the storage state, the first end of the auxiliary sheet is at least partially stored in the cavity, and the second end of the auxiliary sheet is positioned at the far 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 positioned at the proximal end of the clamp, and the auxiliary sheet at least partially covers the surface of the clamp.

2. The jaw assembly of claim 1, wherein the second end of the auxiliary sheet is provided with a first securing portion, the first securing portion being secured to a proximal surface of the jaw when the auxiliary sheet is in the deployed state; and/or, when the auxiliary sheet is in the storage state, the first fixing part is mounted on the distal end surface of the jaw.

3. The jaw assembly of claim 2, wherein a first securing member is provided at a proximal end of the jaw, a first securing portion of the auxiliary sheet is provided with a mounting hole, and the mounting hole is sleeved outside the first securing member when the auxiliary sheet is in the deployed state;

the assembly further includes a cutter that cuts the wall of the mounting hole as the cutter moves in a distal direction from the proximal end of the jaws.

4. The jaw assembly of claim 1 wherein a distal surface of the jaw is provided with a first opening in communication with the cavity and a receiving groove at least partially on a proximal side of the first opening;

When the auxiliary sheet is in the storage state, the auxiliary sheet is arranged in the first opening in a penetrating mode, the second end of the auxiliary sheet is located in the containing groove, and the surface of the auxiliary sheet does not protrude out of the surface of the clamp.

5. The jaw assembly of claim 4 wherein a second securing member is disposed in the receiving slot of the jaw and wherein the top end of the second securing member has a height less than or equal to the surface height of the jaw.

6. The jaw assembly of claim 1, further comprising a mounting plate, wherein the distal wall of the jaw is provided with a second opening, wherein the second opening is in communication with the cavity, wherein the mounting plate is removably coupled to the jaw, and wherein the mounting plate at least partially covers the second opening.

7. The jaw assembly of claim 1, wherein the auxiliary sheet is at least partially folded into a multi-layer structure when the auxiliary sheet is in the stowed condition, and wherein the multi-layer structure is located inside the cavity.

8. The jaw assembly of claim 7, wherein a stacking direction of the multi-layered structure is perpendicular to an axial direction of the jaw or parallel to an axial direction of the jaw.

9. The jaw assembly of claim 1 wherein the interior of the cavity is further provided with a mounting member, the first end of the auxiliary tab being provided with a second securing portion, the second securing portion being connected to the mounting member, the mounting member being movable relative to the side wall of the cavity in the axial direction of the jaw.

10. The jaw assembly of claim 9, wherein a side wall of the cavity is provided with a chute extending in the axial direction, and the mounting member is provided with a slide at least partially located in the chute and movable in the direction of extension of the slide.

11. The jaw assembly of claim 1, wherein the auxiliary tab includes an auxiliary tab body and a second securing portion, the second securing portion being located inside the cavity, the cavity being further internally provided with a cutting member, the cutting member being at least partially located on a proximal side of the second securing portion, the cutting member cutting the auxiliary tab when driven to move toward the auxiliary tab to separate the auxiliary tab body from the second securing portion.

12. The jaw assembly of claim 11 further comprising a firing member, wherein the interior of the cavity is further provided with a drive member in communication with the cutting member, the firing member driving the cutting member toward the auxiliary blade via the drive member as the firing member is driven from the proximal end of the jaw to the distal end of the jaw.

13. The jaw assembly of claim 12, wherein the jaw is provided with a cutter slot extending axially of the jaw, the proximal end of the driver being at least partially within the distal end of the cutter slot.

14. The jaw assembly of claim 12, wherein the inner wall of the cavity is provided with at least one support portion, the support portion being located on the proximal side of the second fixing portion, a first gap being provided between the top end of the support portion and the upper wall of the cavity, the auxiliary piece being disposed in the first gap in a penetrating manner.

15. The jaw assembly of claim 14 wherein the proximal side of the support portion is a longitudinally extending guide surface, the distal side of the cutting member or the driving member bearing against the guide surface of the support portion, the driving member being driven longitudinally along the guide surface by a driving force of the firing member in a distal direction.

16. The jaw assembly of claim 1, wherein the distal end of the jaw comprises a guide surface that is sloped toward the bottom surface, or wherein the distal end of the jaw comprises an upwardly curved, upturned eagle mouth.

17. The jaw assembly of claim 1, wherein the auxiliary sheet is at least partially wound into a spool structure when the auxiliary sheet is in the stowed condition, and wherein the spool structure is located inside the cavity.

18. The jaw assembly of claim 1 wherein the distal end of the jaw is further provided with a olecranon piece rotatably connected to the distal end of the jaw.

19. A surgical stapler comprising the jaw assembly of any one of claims 1 to 18.