CN209996390U - Nail bin assembly and medical anastomat comprising same - Google Patents

Abstract

The utility model provides an kinds of nail storehouse subassembly reaches medical anastomat including it, the nail storehouse subassembly includes nail area at least, the nail area includes the edge the nail area body of medical anastomat's axial direction extension, nail area body is provided with at least and arranges the edge the anastomotic nail that the extending direction of nail area body was arranged in proper order is located the locating part on the both sides limit of nail area, the locating part is followed the extending direction of nail area body extends, the locating part with the nail area body is injectd the accommodation space of anastomotic nail, through adopting the utility model discloses, form anastomotic nail on nail area, it is more convenient to install, and the locating part through nail area both sides has realized that the position of anastomotic nail in the nail storehouse subassembly is injectd and the injectd the injecture of the play nail direction of anastomotic nail when percussion anastomat.

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 kinds of nail storehouse subassemblies and including its medical anastomat.

Background

The digestive tract diseases are high-incidence diseases of human beings, and in the treatment process, a medical anastomat is often used for replacing the manual operation of a doctor to perform anastomosis on physiological tissues such as the digestive tract and the like, the medical anastomat is common surgical operation instruments, most of the medical anastomats adopt an axial internal stapling mode, end-to-end or end-to-side anastomosis is formed on the physiological tissues such as esophagus, stomach and intestinal tract during operation, two sections of tissues are contained in the medical anastomat in an astringing mode during anastomosis, a circular anastomotic stoma is formed on the tissues after the completion of percussion, and a human body channel is reconstructed.

In the prior art, the medical anastomat comprises a medical anastomat body, an operating handle movably connected with the medical anastomat body and a nail anvil assembly matched with the medical anastomat body, the medical anastomat body comprises a nail bin assembly and a nail bin frame which are arranged on the far-end side, the far-end side and the near-end side are opposite to an operator, the end close to the operator is the near-end side, the end far from the operator is the far-end side, namely the end close to the operation position is the far-end side, when in 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 forming of the anastomotic nails in the nail bin assembly at the nail anvil assembly.

In the existing cartridge assembly, staples are mostly arranged separately, however, such staples are required to be installed in the staple holes of the cartridge assembly individually, and the installation is very inconvenient.

SUMMERY OF THE UTILITY MODEL

To the problem among the prior art, the utility model aims to provide kinds of nail storehouse subassemblies and including its medical anastomat, will coincide the nail and form on nail area, it is more convenient to install, and the locating part through nail area both sides realizes the position of coinciding the nail and prescribes a limit to.

The embodiment of the utility model provides kinds of nail bin assemblies, at least nail belts, the nail belt includes the nail belt body that extends along the axial direction of medical anastomat, the nail belt body is provided with at least rows of anastomotic nails that arrange in proper order along the extending direction of nail belt body;

the limiting parts are located on two side edges of the nail belt and extend along the extending direction of the nail belt body, and the limiting parts and the nail belt body limit the accommodating space of the anastomosis nail.

Optionally, the staples include two rows of the staples, and the two rows of the staples are respectively arranged near two side edges of the staple belt.

Optionally, the staple includes a piercing end, and the two side edges of the staple band body and the corresponding positions of each piercing end both retract inwards to define the staple outlet space of the staple together with the adjacent limiting members.

Optionally, two side edges of the distal end side of the nail belt body are respectively in contact with the limiting members at two sides, and the upper surface of the limiting member is flush with the upper surface of the nail belt body.

Optionally, a connecting rod extending along the extending direction of the staple belt body is further disposed between the two rows of staples, and a receiving space of the staples is defined between the connecting rod and the stopper.

Optionally, the staple cartridge assembly comprises two staple belts and four limit pieces respectively arranged at two sides of the two staple belts, namely an th limit piece and a fourth limit piece positioned at the outer side and a second limit piece and a third limit piece positioned at the inner side, wherein a cutter groove is defined between the inner side surfaces of the second limit piece and the third limit piece.

Optionally, in a proximal side view of the staple cartridge assembly, an included angle is formed between end center axes of the th stop and the fourth stop.

Optionally, an inner side surface of the second limiting member is parallel to an inner side surface of the third limiting member.

Optionally, in a proximal side view of the staple cartridge assembly, an included angle of is formed between the outer side surface of the second retaining member and the inner side surface of the second retaining member, and an included angle of is formed between the outer side surface of the third retaining member and the inner side surface of the third retaining member.

Optionally, in a proximal side view of the staple cartridge assembly, the outer side surface of the second retaining member is parallel to the end surface central axis of the th retaining member, and the outer side surface of the third retaining member is parallel to the end surface central axis of the second retaining member.

Optionally, the staple cartridge assembly further includes a staple pushing block disposed at a proximal end side of the retaining member, a chamfer structure is formed at a top end of side where the staple pushing block is engaged with each retaining member, and an inclined surface engaged with the chamfer structure is formed at side where each retaining member is engaged with the staple pushing block.

Optionally, the staple cartridge assembly further comprises a fixing member, and the distal end side of the retaining member is fixed on the fixing member.

The embodiment of the utility model provides a still provide kinds of medical anastomats, medical anastomat includes the nail storehouse subassembly.

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

the utility model provides an staple cartridge components for medical anastomat, the nail that will coincide is formed on nail area, it is more convenient to install and change, after times operation is accomplished, can only change the nail area, both sides in nail area set up the locating part, prescribe a limit to the accommodation space of nail that coincide, avoid the nail that coincide to take place the condition of dislocation in staple cartridge components, advance step, the nail space of going out that nail can be injectd jointly to locating part and nail area body, follow established orientation when guaranteeing that the nail coincide and go out the nail, staple bolt or the skew condition of nail anastomotic position when avoiding appearing the anastomat percussion, improve the operation effect.

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 view of a staple cartridge assembly of an embodiment of the present invention in cooperation with an anvil and a staple cartridge rack;

FIG. 2 is a schematic view of a cartridge assembly and cartridge rack according to an embodiment of the present invention at ;

FIG. 3 is a front view of a cartridge module of an embodiment of the present invention in cooperation with a cartridge rack and a body;

FIG. 4 is a left side view of a staple cartridge assembly of an embodiment of the present invention in cooperation with a staple cartridge rack and body;

FIG. 5 is a sectional view taken along line A-A of FIG. 4;

FIG. 6 is a schematic view of a staple cartridge assembly according to an embodiment of the present invention at in combination with a staple pusher;

FIG. 7 is a schematic view of the structure of FIG. 6 with the side stop removed;

FIG. 8 is a top view of a staple cartridge assembly according to an embodiment of the present invention at ;

fig. 9 is a schematic structural view of the stopper and the nail pushing block according to the embodiment of the present invention;

fig. 10 and 11 are proximal end side views of a retaining member and staple pusher block of a staple cartridge assembly according to an embodiment of the present invention .

Reference numerals:

1 nail bin rack 521 second limiting piece inner side surface

2 outer side surface of a second limiting piece of the anvil component 522

3 inner side surface of the fixing member 531 the third limiting member

Outer side surface of 4-nail belt 532 third limiting piece

41 fitting nail 55 fitting inclined surface

411 piercing end 6 connecting rod

412 connecting end 61 bump

42 nail belt body 7 nail pushing block

421 protruding block accommodation opening 71 separation part

422 indented surface 72 chamfering structure

43 cutting knife for staple containing space 81

44 nail-out space 82 push-type cutter rod

51-54 stop 83 cutter slot

9 main body

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 staple cartridge assemblies for medical anastomat and medical anastomat comprising the staple cartridge assemblies, the staple cartridge assemblies comprise at least staple belts, each staple belt comprises a staple belt body extending along the axial direction of the medical anastomat, at least rows of staples sequentially arranged along the extending direction of the staple belt body are arranged on the side of the staple belt body, and limiting parts are arranged on the two side edges of each staple belt and extend along the extending direction of the staple belt body, and the limiting parts and the staple belt body limit the accommodating space of the staples.

The utility model discloses a form the anastomotic nail on nail belt, can directly use the nail area during the installation as the integral erection to the nail storehouse subassembly, the nail storehouse subassembly is more convenient to operate in the structure of current single anastomotic nail, every anastomotic nail is injectd in nail hole, and in the structure that adopts the nail area, the structure that does not set up the nail hole, position for the anastomotic nail in nail area is injectd, both sides in nail area still are provided with the locating part, the accommodation space of anastomotic nail is injectd, avoid the condition that the anastomotic nail takes place the dislocation in the nail storehouse subassembly, when the percussion anastomat, the anastomotic nail is released towards nail anvil component in the space of injectding, go out the nail along given direction when also having guaranteed anastomotic nail anastomosis, staple or the skew condition of the anastomotic position of nail when having avoided appearing the anastomat percussion.

The structure of the staple cartridge assembly and the stapler according to the embodiment of the present invention will be described in detail with reference to fig. 1 to 11.

As shown in fig. 1 to 3, in this embodiment, the stapler includes a stapler body 9, a cartridge rack 1 and a nail anvil assembly 2 are disposed at the distal end side of the stapler body 9, and a cartridge assembly is disposed in the cartridge rack 1. as shown in fig. 1 to 8, the cartridge assembly includes two nail belts 4, each nail belt 4 includes a nail belt body 42 extending along the axial direction of the medical stapler, and each nail belt body 42 is provided with two rows of staples 41 sequentially arranged along the extending direction of the nail belt body 42. therefore, in this embodiment, a plurality of staples 41 are formed on nail belts 4, which is more convenient to use, wherein, the number of nail belts 4 and the number of rows of staples 41 on each nail belt 4 are examples, and in other alternative embodiments, the number of the nail belts 4 may be increased or decreased as needed, and the number of rows of staples 41 on the nail belts 4 may be increased or decreased, which are within the protection scope of the present invention.

In order to limit the positions of the staples 41 in the cartridge assembly and the staple discharging direction of the staples 41, the stoppers 51 to 54 are positioned on both sides of the staple strip 4, the stoppers 51 to 54 extend along the extending direction of the staple strip body 42, the stoppers 51 to 54 and the staple strip body 42 define the receiving spaces 43 of the staples 41, the staple receiving spaces 43 are spaces defined along the axial direction of the stapler, that is, the stoppers are mainly limited such that the staples 41 do not deviate in the direction toward the axial center of the stapler or in the direction away from the axial center of the stapler, the upper surface of the cartridge assembly is a cartridge surface, and when the staples 41 move from the cartridge surface in the anvil direction during the firing of the stapler, the restrictions of the staple receiving spaces 43 are also limited such that the staples do not deviate in the inward direction or in the outward direction.

In the present invention, the distal side and the proximal side are relative to the operator, wherein the distal side refers to the end that is farther from the operator and the proximal side refers to the end that is closer to the operator, for example, in the perspective of FIG. 1, the distal side of the cartridge frame 1 refers to the left in the figure end, the proximal side refers to the right in the figure end, the distal side of the anvil assembly 2 refers to the left in the figure end, and the proximal side refers to the right in the figure end.

In this embodiment, the cartridge assembly further comprises a fixing member 3, and the distal end sides of the retaining members 51 to 54 are fixed to the fixing member 3. Similarly, the distal ends of the stoppers 51 to 54 may be non-detachably connected to the fixing member 3, or detachably connected to the fixing member 3.

In this embodiment, the staples 41 include piercing ends 411 and connecting ends 412, the staples 41 are connected to the staple strip body 42 through the connecting ends 412, the two side edges of the staple strip body 42 are retracted inward at positions corresponding to each piercing end 411, as shown in fig. 7, retracted surfaces 422 are formed at the two sides of the staple strip body 42, retracted surfaces 422 are correspondingly formed at positions of each staple 41, the retracted surfaces 422 and the adjacent limiting members 51 to 54 define the staple exiting space 44 of the staple 41 together, the cartridge assembly further includes staple pushing blocks 7 located at the proximal end sides of the limiting members 51 to 54, when the staples 41 are fired and stapled, the staples 41 are pushed in the distal direction of the stapler by the staple pushing blocks 7 at the proximal end side, the piercing ends 411 of the staples 41 rotate around the connecting ends 412 in the anvil direction, the piercing ends 411 pass through the staple exiting space 44 to extend out of the cartridge face, and after passing through the tissue, the staple anvil assembly 2 is formed so as to achieve the restriction of the tissue exiting space , and the staples 41 can be guided out without deviation from the side surfaces of the staple exiting space 51 and the staple exiting out during the staple exiting direction.

In this embodiment, two side edges of the distal end side of the nail belt body 42 are respectively contacted with the limiting members 51 to 54 at two sides, and the upper surfaces of the limiting members 51 to 54 are flush with the upper surface of the nail belt body 42. Here, the upper surfaces of the stoppers 51-54, i.e., the stoppers 51-54, face the surface of the anvil assembly 2 in the view of FIG. 5, and the upper surface of the staple belt body 42, i.e., the staple cartridge surface in the view of FIG. 5, the staple belt body 42 faces the upper surface of the anvil assembly 2.

In this embodiment, two rows of staples 41 are respectively disposed near two sides of the staple strip 4, in order to define the receiving space 43 of the staples 41 at step , a connecting rod 6 extending along the extending direction of the staple strip body 42 is further disposed between the two rows of staples 41 of each staple strip 4, and the receiving space 43 of the staples 41 is defined between the connecting rod 6 and the stopper, as shown in fig. 7 and 8, during the process of removing the staples 41, the staples 41 are guided by the side surfaces of the stoppers 51 to 54 and the side surface of the connecting rod 6 at the same time, so that no staple phenomenon occurs, and the staples 41 can smoothly pass through the cartridge surface from the predetermined staple removing space 44.

In the embodiment, the nail cartridge assembly comprises two nail belts 4 and four limit pieces 51-54 respectively arranged at two sides of the two nail belts 4, wherein the th limit piece 51 and the fourth limit piece 54 are positioned at the outer side, the second limit piece 52 and the third limit piece 53 are positioned at the inner side, and a incision groove 83 is defined between the inner side surfaces of the second limit piece 52 and the third limit piece 53.

The proximal end side of the cartridge assembly is provided with a cutter 81, a pusher bar 82 and a staple pushing block 7, and the tip of the staple pushing block 7 is provided with a breaking part 71 corresponding to the connecting end 412 of the staple 41. The nail belt body 42 is further provided with a projection receiving opening 421 corresponding to the connecting end 412 of each staple 41, the connecting rod 6 is provided with a plurality of projections 61, and each projection 61 penetrates out of the corresponding projection receiving opening 421. When the stapler is fired, a doctor holds the operating handle, the pusher bar 82 pushes the cutter 81 and the staple pushing block 7 to move towards the distal side of the stapler, the connecting end 412 is pushed by the distal side of the breaking part 71 of the staple pushing block 7 to move towards the distal side to be in contact with the proximal side surface of the bump 61, and under the action of the reaction force of the bump 61 and the pushing force of the breaking part 71, the connecting end 412 of the staple 41 is broken, so that the staple 41 is conveniently separated from the staple belt body 42.

In the proximal side view of the cartridge assembly, as shown in fig. 9 and 10, in this embodiment, a included angle m is formed between end surface center axes of the first and second retaining members 51 and 54 in the proximal side view of the cartridge assembly, an angle of the included angle m is optionally 10 ° to 30 °, and is preferably 18 ° to 22 °, so as to ensure that a space inside the stapler assembly is fully utilized, a lip of a tissue anastomotic opening after anastomosis is increased, and safety and reliability of the anastomotic opening are ensured.

If the inner side surface of the second limiting member 52 and the inner side surface of the third limiting member 53 have the same included angle n, V-shaped open spaces are formed between the second limiting member 52 and the third limiting member 53, that is, the cutter groove 83 is grooves with V-shaped end surfaces, when the cutter 82 moves from the proximal side to the distal side of the stapler through the cutter groove 83 to cut tissue, when the tissue to be operated is thicker, the tissue may enter the cutter groove 83 during the closing process, and the V-shaped cutter groove inevitably receives more tissue, so that the cutter 82 is difficult to return to the initial position from the distal side, therefore, in this embodiment, the inner side surface 521 of the second limiting member 52 is set to be parallel to the inner side surface 531 of the third limiting member 53, as shown in fig. 10, the inner side surface 521 of the second limiting member 52 and the inner side surface 531 of the third limiting member 53 are preferably perpendicular to the cartridge surface of the cartridge assembly, and the second limiting member 52 and the third limiting member 53 are of an inverted trapezoid-like structure.

In this embodiment, in a proximal side view of the cartridge assembly, an included angle y is formed between the outer side surface 522 of the second limiting member 52 and the inner side surface 521 of the second limiting member 52, and the included angle y may be selected to be y ═ n/2, an included angle x is formed between the outer side surface 532 of the third limiting member 53 and the inner side surface 532 of the third limiting member 53, and the included angle x may be selected to be x ═ n/2, and the end surfaces of the second limiting member 52 and the third limiting member 53 are inverse trapezoidal surfaces, that is, cutter grooves 82 with rectangular end surfaces are formed by designing the shapes of the second limiting member 52 and the third limiting member 53, when the cutter 82 cuts the tissue, no excessive tissue enters the cutter groove 83, and the cutter 82 is convenient to retract to the initial position again.

In this embodiment, as shown in fig. 9 and 10, the staple pusher 7 is a fan-shaped staple pusher 7 adapted to the receiving space of the staples 41, and the staple pusher 7 includes four staple pusher tabs axially aligned with rows of the staples 41, respectively, to facilitate pushing the staples 41 out of the cartridge assembly when the stapler is fired.

In this embodiment, a chamfer structure 72 is formed at the top end of the nail pushing block 7 on the side of where the stopper 51-54 is engaged, and a slope 55 is formed on the side of where the stopper 51-54 is engaged with the nail pushing block 7.

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

the utility model provides an staple cartridge components for medical anastomat, the nail that will coincide is formed on nail area, it is more convenient to install and change, after times operation is accomplished, can only change the nail area, both sides in nail area set up the locating part, prescribe a limit to the accommodation space of nail that coincide, avoid the nail that coincide to take place the condition of dislocation in staple cartridge components, advance step, the nail space of going out that nail can be injectd jointly to locating part and nail area body, follow established orientation when guaranteeing that the nail coincide and go out the nail, staple bolt or the skew condition of nail anastomotic position when avoiding appearing the anastomat percussion, improve the operation effect.

It will be apparent to those skilled in the art that a number of simple inferences or substitutions can be made without departing from the spirit and scope of the invention and these should be construed as within the scope of the invention.

Claims (13)

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

at least staple belts, each staple belt comprises a staple belt body extending along the axial direction of the medical stapler, and each staple belt body is provided with at least rows of staples which are sequentially arranged along the extending direction of the staple belt body;

the limiting parts are located on two side edges of the nail belt and extend along the extending direction of the nail belt body, and the limiting parts and the nail belt body limit the accommodating space of the anastomosis nail.

2. The staple cartridge assembly of claim 1, wherein said staples comprise two rows of said staples, said rows of said staples being disposed adjacent to respective sides of said staple strip.

3. The cartridge assembly of claim 2, wherein the staples include piercing ends, and wherein the two sides of the staple strip body are inwardly recessed at locations corresponding to each of the piercing ends to define, with the adjacent retainers, staple exiting spaces for the staples.

4. The staple cartridge assembly of claim 3, wherein two sides of the distal end of the staple band body are respectively in contact with the stoppers at two sides, and the upper surfaces of the stoppers are flush with the upper surface of the staple band body.

5. The cartridge assembly according to claim 4, wherein a link extending in the extending direction of the staple strip body is further provided between the two rows of staples, and the link and the retainer define a staple receiving space therebetween.

6. The staple cartridge assembly of claim 1, wherein said staple cartridge assembly comprises two staple strips and four stoppers disposed on either side of said two staple strips, said th and fourth stoppers being on the outside and said second and third stoppers being on the inside, said second and third stoppers defining a cutting slot between the inside surfaces thereof.

7. The staple cartridge assembly of claim 6, wherein said limiter and said fourth limiter have an included angle of between their facing central axes in a proximal side view of said staple cartridge assembly.

8. The staple cartridge assembly of claim 6 or 7, wherein said inner side surface of said second retainer is parallel to said inner side surface of said third retainer.

9. The staple cartridge assembly of claim 8, wherein said second stop has an angle of between its outer side surface and its inner side surface and said third stop has an angle of between its outer side surface and its inner side surface in a proximal side view of said staple cartridge assembly.

10. The staple cartridge assembly of claim 9, wherein said second stop has an outer side surface that is parallel to said stop center axis and said third stop has an outer side surface that is parallel to said second stop center axis in a proximal side view of said staple cartridge assembly.

11. The staple cartridge assembly of claim 6, further comprising a staple pushing block disposed at a proximal side of said retainer, wherein a chamfer structure is formed at a top end of an side of said staple pushing block engaged with each said retainer, and a chamfer surface engaged with said chamfer structure is formed at a side of each said retainer engaged with said staple pushing block.

12. The staple cartridge assembly of claim 1, further comprising a retainer, a distal side of said retainer being secured to said retainer.

The medical stapler of claim 13, , comprising the staple cartridge assembly of any of claims 1-12, wherein is further defined.

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