CN210931598U

CN210931598U - Nail bin assembly and medical anastomat comprising same

Info

Publication number: CN210931598U
Application number: CN201921145793.0U
Authority: CN
Inventors: 刘伟; 陈望东
Original assignee: Suzhou Tianchen International Medical Technology Co Ltd
Current assignee: Touchstone International Medical Science Co Ltd; Suzhou Tianchen International Medical Technology Co Ltd
Priority date: 2019-07-19
Filing date: 2019-07-19
Publication date: 2020-07-07
Anticipated expiration: 2029-07-19

Abstract

The utility model provides a nail bin assembly and a medical anastomat comprising the same, wherein the nail bin assembly comprises a supporting piece, a plurality of anastomosis nails, a cover plate and a firing block, the cover plate comprises a fixed part fixedly connected with the supporting piece and bent parts in one-to-one correspondence with the anastomosis nails, and the bent parts are rotatably connected with the fixed part; when the anastomotic nail is not formed in a closed mode, the inner wall of the bent portion is attached to the anastomotic nail so as to keep the anastomotic nail between the support piece and the bent portion, and after the anastomotic nail is formed in the closed mode, the driving portion of the firing block enters the space between the inner wall of the bent portion and the anastomotic nail so that the bent portion rotates outwards and is separated from the anastomotic nail. Through adopting the utility model discloses, through the retaining action of apron during the closed shaping of coincide nail, coincide nail can not break away from with support piece, coincide nail closed shaping back, the kink of apron is driven by the drive division and no longer fixed coincide nail after the outside rotation, coincide nail can conveniently break away from with support piece.

Description

Nail bin assembly and medical anastomat comprising same

Technical Field

The utility model relates to the technical field of medical equipment, concretely relates to nail storehouse subassembly reaches medical anastomat including it.

Background

Digestive tract diseases are one of the high-incidence diseases of human beings, and in the treatment process, a medical anastomat is often used for performing anastomosis on physiological tissues such as the digestive tract and the like instead of manual operation of a doctor. The medical anastomat is a common surgical operation instrument, an axial internal stapling mode is mostly adopted, physiological tissues such as esophagus, stomach and intestinal tract are anastomosed end to end or end to side in an operation, two sections of tissues are contained in the medical anastomat in an inwards converging mode in an anastomosing process, a circular anastomotic stoma is formed on the tissues after the completion of the anastomosis, and a human body channel is rebuilt.

In the prior art, a medical stapler includes a medical stapler body, an operating handle movably connected to the medical stapler body, and a nail anvil assembly engaged with the body. The medical anastomat body part comprises a nail bin assembly and a nail bin assembly frame which are arranged on the far end side, and the nail bin assembly comprises a supporting piece and a plurality of anastomotic nails which are arranged on the supporting piece. During operation, the nail bin assembly and the nail anvil assembly are closed, the operating handle is held, the anastomotic nails can be pushed to move towards tissues, and the tissues are anastomosed through the formation of the anastomotic nails in the nail bin assembly at the nail anvil assembly.

In the prior art, the staples and the supporting pieces are directly connected, and as the staples and the supporting pieces are all metal pieces, a rigid metal-to-metal connection is formed between the staples and the supporting pieces, and the connection has instability and uncertainty. When the anastomat is fired and the anastomotic nail moves to the tissue, the condition that the anastomotic nail is difficult to separate from the support piece and is clamped may occur, and once one anastomotic nail is clamped, the motion of the firing block continuing to the far-end side can be hindered, the forming and the separation of other anastomotic nails around can be influenced, and the operation failure is caused.

The utility model discloses in, distal end side and near-end side are for the operator, and the one end that is nearer apart from the operator is near-end side, and the one end far away apart from the operator, the one end that is more close to the operation position promptly is the distal end side.

SUMMERY OF THE UTILITY MODEL

Aiming at the problems in the prior art, the utility model aims to provide a nail bin assembly and a medical anastomat comprising the same, wherein the anastomosis nails cannot be separated from a supporting piece through the retaining action of a cover plate in the closing and forming process of the anastomosis nails; after the closed forming of the anastomosis nail is finished, the anastomosis nail is not fixed at the bent part of the cover plate any longer, and the anastomosis nail can be conveniently separated from the support piece.

The embodiment of the utility model provides a nail storehouse subassembly for medical anastomat, nail storehouse subassembly includes:

a support extending in an axial direction of the stapler;

a plurality of staples disposed on a side of the buttress;

the cover plate comprises a fixing part fixedly connected with the supporting part and bending parts in one-to-one correspondence with the anastomosis nails, and the bending parts are rotatably connected with the fixing part;

the percussion block is provided with a driving part;

when the anastomat is not fired, the inner wall of the bending part is attached to the anastomosis nail so as to keep the anastomosis nail between the support part and the bending part, and when the anastomat is fired, the driving part of the firing block enters the space between the inner wall of the bending part and the anastomosis nail so that the bending part rotates outwards to be separated from the anastomosis nail.

Optionally, the firing block further comprises a staple pushing portion, when the stapler is fired, the staple pushing portion of the firing block pushes the staple closing forming, and after the staple closing forming, a driving block of the firing block enters the inner wall of the bending portion and the space between the staples.

Optionally, the first end of the staple is a staple leg, the second end of the staple is a connecting portion, one side of the connecting portion, which faces the bending portion, is provided with a first matching portion, the inner wall of the bending portion is provided with a second matching portion, and when the staple is not formed in a closed manner, the first matching portion and the second matching portion are mutually embedded.

Optionally, a third matching portion is arranged on one side, facing the support member, of the connecting portion, a fourth matching portion is arranged on the side face of the support member, and when the staples are not formed in a closed mode, the third matching portion and the fourth matching portion are mutually embedded.

Optionally, the first mating portion and the third mating portion are respectively a first groove and a second groove, and the second mating portion and the fourth mating portion are respectively a first fixing piece and a second fixing piece.

Optionally, the first groove and the second groove respectively comprise a spherical surface, and the first fixing piece and the second fixing piece are respectively a bump with a spherical surface.

Optionally, the first mating portion and the second mating portion are communicated with each other to form a through hole, and the second mating portion and the fourth mating portion are respectively a first fixing piece and a second fixing piece.

Optionally, the driving portion includes a guide surface, the guide surface is inclined toward a direction away from the side surface of the support member from a distal end side of the guide surface to a proximal end side of the guide surface, and the guide surface is attached to the inner wall of the bending portion when the driving portion enters between the inner wall of the bending portion and the staples.

Optionally, the fixing portion covers an upper surface of the supporting member, and the bending portion is disposed on two sides of the fixing portion.

Optionally, the fixing portion and the bending portion are integrally formed as a plastic or rubber member.

The embodiment of the utility model provides a medical anastomat is still provided, including arbitrary any the nail storehouse subassembly.

The utility model provides a nail storehouse subassembly reaches medical anastomat including it has following advantage:

the utility model provides a nail storehouse subassembly for medical anastomat, when the anastomotic nail is not closed the shaping, through the holding effect of apron, the anastomotic nail is kept between the kink of apron and anastomotic nail and can not break away from with support piece, behind anastomotic nail closing shaping, under the effect of the drive division of percussion block, the kink of apron is outer revolved and with the separation of anastomotic nail, no longer retrains anastomotic nail, anastomotic nail can break away from with support piece conveniently to guarantee the anastomotic nail effect. Further, the driving portion is arranged on the near end side of the nail pushing portion, after the nail pushing portion pushes the anastomosis nails upwards out of the closed forming portion, the driving portion enters the space between the bending portion and the anastomosis nails, and the phenomenon that the anastomosis nails are separated from the supporting piece too early in the percussion process of the anastomat is avoided.

Drawings

Other features, objects and advantages of the invention will become more apparent from a reading of the following detailed description of non-limiting embodiments thereof, with reference to the accompanying drawings.

Fig. 1 is a schematic structural view of a nail cartridge assembly according to an embodiment of the present invention;

FIG. 2 is an enlarged view of FIG. 1 at A;

fig. 3 is a schematic structural view of a nail cartridge assembly according to an embodiment of the present invention;

FIG. 4 is an enlarged view of FIG. 2 at B;

FIG. 5 is a schematic structural view of a percussion block according to an embodiment of the present invention;

fig. 6 and 7 are schematic structural views of a staple according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of a cover plate according to an embodiment of the present invention;

fig. 9 is a schematic structural view of a supporting member according to an embodiment of the present invention;

fig. 10 is a schematic structural view illustrating the cooperation between the supporting member and the staples according to an embodiment of the present invention.

Reference numerals:

1 support 31 nail foot

11 proximal side 32 connection of support

12 distal side 33 first recess of support

13 second fixing member 34 second groove

2 cover plate 4 percussion block

21 bent part 41 drive part

211 inner wall 42 guide surface

212 first fixing member 43 nail pushing part

Distal end side of the fixing portion 431 of the 22 fastener

3 upper surface of staple 432 pushing portion

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different 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 example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their repetitive description will be omitted.

In order to solve the technical problem in the prior art, the utility model provides a medical anastomat that is used for nail storehouse subassembly of medical anastomat and includes this nail storehouse subassembly. The nail bin assembly comprises a support piece extending along the axial direction of the anastomat, a plurality of anastomosis nails arranged on the side face of the support piece, a cover plate and a firing block. The cover plate comprises a fixing part fixedly connected with the support part and bending parts in one-to-one correspondence with the anastomosis nails, and the bending parts are rotatably connected with the fixing part, namely the bending parts can rotate towards the direction far away from the support part relative to the fixing part. The firing block is provided with a driving part. The bent part is used for keeping the staples not to be separated from the bent part when the staples are not completely formed. The driving part is used for separating the bent part from the anastomosis nail after the anastomosis nail is completely closed and formed, so that the anastomosis nail losing the retaining effect of the bent part can be conveniently separated from the support part.

Specifically, when the staple is not completely formed, the inner wall of the bending portion is attached to the staple to hold the staple between the support and the bending portion, so that the staple is not separated from the support, and after the staple is completely formed, the driving portion of the firing block enters between the inner wall of the bending portion and the staple, so that the bending portion rotates outwards to be separated from the staple, and after the holding effect of the bending portion is lost, the staple can be conveniently separated from the support without being clamped. The utility model also provides a medical anastomat, include the nail storehouse subassembly, the nail storehouse subassembly is located the distal end side of anastomat body, through the structure that adopts this kind of nail storehouse subassembly, can improve the operation effect of anastomat effectively.

The structure of the nail bin assembly according to the embodiment of the present invention is described with reference to fig. 1 to 10.

The embodiment of the utility model provides a nail storehouse subassembly for medical anastomat, nail storehouse subassembly includes support piece 1, a plurality of identical nail 3, apron 2 and percussion piece 4. Wherein the support 1 extends in the axial direction of the stapler, a plurality of staples 3 being arranged from a proximal side 11 to a distal side 12 of the support 1. Fig. 1 shows the situation that two supporting members 1 are disposed in one nail cartridge assembly, but the present invention is not limited thereto, and the number of the supporting members 1 in the nail cartridge assembly can be selected as required, all belonging to the protection scope of the present invention. One of the support members 1 is described here as an example.

The cover plate 2 comprises a fixing portion 22 fixedly connected with the support member 1 and bending portions 21 corresponding to the staples 3 one by one, the bending portions 21 are rotatably connected with the fixing portion 22, when the bending portions 21 rotate, the bending portions 21 can have two states, one is a state that the inner walls 211 of the bending portions 21 are attached to the surfaces of the staples 3, and the other is a state that the bending portions 21 rotate outwards to be separated from the surfaces of the staples 3, wherein the outward rotation of the bending portions 21 refers to that the bending portions 21 rotate towards a direction away from the support member 1. The firing block 4 is provided with a driving portion 41, and when the driving portion 41 is inserted between the inner wall 211 of the bending portion 21 and the staples 3, the bending portion 21 is driven to rotate outwards to be separated from the surface of the staples 3.

In the perspective of fig. 1, the proximal side of a component is the right end side of the component and the distal side of a component is the left end side of the component. For example, the support 1 has a proximal end side 11 as its right end side and a distal end side 12 as its left end side.

When the staples are not completely formed, the inner wall of the bent portion 21 is attached to the staple 3 to hold the staple 3 between the support 1 and the bent portion 21, that is, to hold the staple 3 without separating from the support 1. After the anastomosis nail is completely formed, the driving part 41 of the firing block 4 enters between the inner wall 211 of the bending part 21 and the anastomosis nail 3, so that the bending part 21 rotates outwards to be separated from the anastomosis nail, and after the retaining effect of the bending part 21 is lost, the anastomosis nail 3 can be conveniently separated from the support part 1, and the firing block 4 cannot be prevented from moving towards the far end to drive the anastomosis nail to continue to be closed and formed, and the anastomosis nail anastomosis effect is ensured. Fig. 1 to 4 show a structure in which the proximal-most side staple 3 is fired. One staple 3 on the proximal end side has been pushed out upward by the firing block 4, and the bent portion 21 on the proximal end side has been driven by the driving portion 41 of the firing block 4 to rotate outward and separate from the staple 3, and the staple 3 can be disengaged from the buttress 2 and stapled in tissue. Preferably, after the bending portion 21 is driven by the driving portion 41 to rotate outward, if the driving portion 41 continues to move to the distal end side, the bending portion 21 is no longer affected by the driving portion 41, and can return to the initial position by means of the inward rotation of the bending portion 21 itself, but the present invention is not limited thereto.

As shown in fig. 4 and 5, in this embodiment, the firing block 4 further includes a staple pushing portion 43, the driving portion 41 is disposed above the staple pushing portion 43, the driving portion 41 is disposed on a proximal end side of the staple pushing portion 43, and a distance is provided between a distal end side of the driving portion 41 and a distal end side of the staple pushing portion 43, so that the staple pushing portion 43 contacts the staples 3 before the driving portion 41 contacts the staples 3 when the stapler is fired, that is, the staple pushing portion 43 pushes the staples 3 out of a closed form before the driving portion 41 enters between the inner wall 211 of the bending portion 21 and the staples 3. Therefore, after the staple pushing portion 43 pushes the staples 3 out of the closed forming, the driving portion 41 enters between the bending portion 31 and the staples 3 to separate the staples 3 from the support 1, so that the staples 3 are prevented from being separated from the support 1 too early when the staples 3 are not closed forming in the firing process of the stapler.

Specifically, the staple pushing portion 43 includes a distal side 431 and an upper surface 432. When the staple pushing portion 43 pushes out the staples 3, the distal end side 431 of the staple pushing portion 43 first contacts with the staples 3 to push out the staple legs 31 of the staples 3 upward, then the upper surface 432 of the staple pushing portion 43 contacts with the staples 3 to further push out the staples 3 upward to a closed shape, then the driving portion 41 drives the bending portion 21 to rotate outward, and the staples 3 are disengaged from the support 1 to be anastomosed to the tissue.

As shown in fig. 5, in this embodiment, in order to better guide the driving portion 41 to enter between the inner wall 211 of the bending portion 21 and the staples 3, the driving portion 41 includes a guiding surface 42, the guiding surface 42 is inclined toward a direction away from the side surface of the support 1 from the distal end side of the guiding surface 42 to the proximal end side of the guiding surface 42, the driving portion 41 forms a wedge-shaped structure with a thin distal end side and a thick proximal end side, and the driving portion 41 is a rigid structure, when the driving portion 41 enters between the inner wall 211 of the bending portion 21 and the staples 3, the guiding surface 42 is in contact with the inner wall 211 of the bending portion 21 to guide the driving portion 41 to expand outward from the bending portion 21.

In another preferred embodiment, the proximal end of the bending part 31 is provided with a smooth guiding surface to better adapt to the driving part 41 so that the bending part 31 is driven to rotate at the driving part 41.

The first end of the anastomosis nail 3 is a nail foot 31, and the second end of the anastomosis nail 3 is a connecting part 32. In order to achieve a better position holding effect of the bent portion 21 on the staples 3 in the initial position, as shown in fig. 6 and 8, a first engagement portion is provided on one side of the connecting portion 32 facing the bent portion 21, a second engagement portion is provided on an inner wall of the bent portion 21, and the first engagement portion and the second engagement portion are engaged with each other when the staples are not completely closed. In this embodiment, the first matching portion is a first groove 33, and the second matching portion is a first fixing member 212. In order to facilitate separation of the first fixing piece 212 and the first groove 33 after the staple is closed and molded, the first groove 33 includes a spherical surface, the first fixing piece 212 is a bump with the spherical surface, and the situation that the staple 3 cannot be separated from the cover plate 2 and the support member 1 due to the fact that the bent portion 21 is clamped after the staple is closed and molded is avoided through the guiding effect of the spherical surface. In other alternative embodiments, the first fitting portion may be a fixing member, and the second fitting portion may be a groove, the first fixing member may not have a spherical surface, but may be provided as a boss having a guide surface, and the first groove is a structure matching the shape of the outer surface of the first fixing member.

In order to facilitate the installation of the staples 3 on the supporting member 1 and the positioning of the staples 3 on the supporting member 1 more accurately, as shown in fig. 7, 9 and 10, a third mating portion is provided on one side of the connecting portion 32 facing the supporting member 1, a fourth mating portion is provided on a side surface of the supporting member 1, and when the staples are not completely closed, the third mating portion and the fourth mating portion are engaged with each other. In this embodiment, the third matching portion is the second groove 34, and the fourth matching portion is the second fixing member 13. In order to facilitate separation of the second fixing piece 13 from the second groove 34 after the staple is closed and molded, the second groove 34 includes a spherical surface, the second fixing piece 13 is a bump with the spherical surface, and the situation that the staple 3 is clamped and cannot be separated from the supporting piece 1 after the staple is closed and molded is avoided by the guiding effect of the spherical surface. In other alternative embodiments, the third fitting portion may be a fixing member, and the fourth fitting portion may be a groove, and the second fixing member may not have a spherical surface but be provided with a boss having a guide surface, and the second groove is a structure matching the shape of the outer surface of the second fixing member.

In another alternative embodiment, the first mating portion and the second mating portion are interconnected to form a through hole, and the second mating portion and the fourth mating portion are a first fixing member and a second fixing member respectively insertable into the through hole. This embodiment may further facilitate machining of the connection portion 32 to form through holes for mating with the first and second fixtures.

As shown in fig. 8, in this embodiment, the fixing portion 22 covers the upper surface of the supporting member 1 to form an upper cover structure, and the bending portion 21 is disposed at two sides of the fixing portion 22. The fixed part with kink can be integrated into one piece's plastic part or rubber spare, nevertheless the utility model discloses be not limited to this, the apron also can adopt other materials that have certain flexibility to make, the fixed part with the kink also can divide the body to set up etc. all belongs to within the scope of protection of the utility model.

The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.

Claims

1. A staple cartridge assembly for a medical stapler, said staple cartridge assembly comprising:

a support extending in an axial direction of the stapler;

a plurality of staples disposed on a side of the buttress;

the percussion block is provided with a driving part;

when the anastomotic nail is not formed in a closed mode, the inner wall of the bending portion is attached to the anastomotic nail so that the anastomotic nail is kept between the support piece and the bending portion, and after the anastomat is formed in the closed mode, the driving portion of the firing block enters the space between the inner wall of the bending portion and the anastomotic nail so that the bending portion rotates outwards to be separated from the anastomotic nail.

2. The staple cartridge assembly according to claim 1, wherein the firing block further comprises a staple pushing portion, when the stapler is fired, the staple pushing portion of the firing block pushes the staple to be closed and formed, and after the staple is closed and formed, the driving block of the firing block enters between the inner wall of the bending portion and the staple.

3. The staple cartridge assembly according to claim 1, wherein the first end of the staple is a staple leg, the second end of the staple is a connecting portion, a first matching portion is disposed on a side of the connecting portion facing the bending portion, a second matching portion is disposed on an inner wall of the bending portion, and the first matching portion and the second matching portion are engaged with each other when the staple is not formed in a closed manner.

4. The staple cartridge assembly according to claim 3, wherein a side of the connecting portion facing the supporting member is provided with a third mating portion, a side of the supporting member is provided with a fourth mating portion, and the third mating portion and the fourth mating portion are engaged with each other when the staples are not formed in a closed state.

5. The staple cartridge assembly of claim 4, wherein said first mating portion and said third mating portion are a first recess and a second recess, respectively, and said second mating portion and said fourth mating portion are a first fastener and a second fastener, respectively.

6. The staple cartridge assembly of claim 5, wherein said first recess and said second recess each comprise a spherical surface, and said first retainer and said second retainer each comprise a projection having a spherical surface.

7. The staple cartridge assembly of claim 4, wherein said first mating portion and said second mating portion are interconnected to form a through hole, and said second mating portion and said fourth mating portion are a first fastener and a second fastener, respectively.

8. The staple cartridge assembly of claim 1, wherein said drive portion includes a guide surface that slopes in a direction away from a side of said support from a distal side of said guide surface to a proximal side of said guide surface, said guide surface engaging said inner wall of said bend portion as said drive portion enters between said inner wall of said bend portion and said staples.

9. The staple cartridge assembly according to claim 1, wherein said fixing portion covers an upper surface of said supporting member, and said bending portion is disposed on both sides of said fixing portion.

10. The staple cartridge assembly according to claim 1, wherein said fixing portion and said bending portion are integrally formed as a plastic or rubber member.

11. A medical stapler comprising a cartridge assembly according to any one of claims 1 to 10.