CN209996388U

CN209996388U - Nail anvil and medical anastomat comprising same

Info

Publication number: CN209996388U
Application number: CN201920473303.3U
Authority: CN
Inventors: 单腾
Original assignee: Suzhou Tianchen International Medical Technology Co Ltd
Current assignee: Suzhou Tianchen International Medical Technology Co Ltd
Priority date: 2019-04-09
Filing date: 2019-04-09
Publication date: 2020-01-31
Anticipated expiration: 2029-04-09

Abstract

The utility model provides an nail anvils and including its medical anastomat for medical anastomat, medical anastomat is including following medical anastomat's axial displacement's broach pole, the distal end side of broach pole is provided with connecting rod portion and lug, the width of lug is greater than the width of connecting rod portion, set up on the nail hammering block face of nail anvil along the cutter groove that medical anastomat's axial direction extended, the inside formation in cutter groove the accommodation space of lug, the incision point has been seted up to the distal end side in cutter groove, the lug is located during the distal end side in cutter groove, the lug accessible incision is followed break away from among the accommodation space.

Description

Nail anvil and medical anastomat comprising same

Technical Field

The utility model relates to the technical field of medical equipment, concretely relates to nail anvils reach medical anastomat including it.

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 head matched with the body, wherein the nail head comprises a nail bin and a nail anvil, and a cutter groove matched with a cutter pushing rod inside the anastomat is formed in the nail anvil surface of the nail anvil.

SUMMERY OF THE UTILITY MODEL

To the problem among the prior art, the utility model aims to provide kinds of nail anvils and include its medical anastomat, after the anastomat percussion is accomplished, the push rod can break away from in the nail anvil, can open nail anvil and nail storehouse, releases the tissue, then smoothly with push rod pull-back to initial position.

The embodiment of the utility model provides nail anvils for medical anastomat, medical anastomat is including following medical anastomat's axial displacement's broach pole, the distal end side of broach pole is provided with connecting rod portion and lug, the width of lug is greater than the width of connecting rod portion, seted up on the nail hammering block face of nail anvil along the cutter groove that medical anastomat's axial direction extends, the inside formation in cutter groove the accommodation space of lug, just the cutter groove in opening width on the nail hammering block face is in the width of connecting rod portion with between the width of lug, the incision point has been seted up to the distal end side in cutter groove, when the lug is located the distal end side in cutter groove, the lug accessible the incision follow break away from in the accommodation space.

Optionally, the protrusion is a square protrusion, and the th cutting edge is a square opening.

Optionally, the th cutting edge has a width and length that are greater than a width and length, respectively, of the tab.

Optionally, a second cutting edge is further formed on the proximal end side of the cutter groove, and when the protrusion is located on the proximal end side of the cutter groove, the protrusion can enter the accommodating space through the second cutting edge.

Optionally, the bump is a square bump, the second incision is a square opening, and the width and the length of the second incision are respectively greater than those of the bump.

Optionally, the second cutting edge comprises a square located on the distal side of the sector and a sector having two radial sides bordering two opposite sides of the square.

Optionally, the bump is a square bump, the width of the square portion is greater than the width of the bump, and the length of the second incision is greater than the length of the bump.

Optionally, the cutter slot communicates to the outer side of the anvil.

The embodiment of the utility model also provides kinds of medical anastomats, which comprise the nail anvil.

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

the utility model provides an nail anvils for medical anastomat, the th incision of cutting edge has been seted up to cutter groove distal end side at the nail anvil, after the anastomat percussion is accomplished, push-type broach pole accessible th incision of cutting edge breaks away from the nail anvil, can open the pin fin portion, make nail storehouse and nail anvil separation, release the tissue between nail storehouse and the nail anvil, pull-back push-type broach pole this moment can not receive the resistance of tissue between nail storehouse and the nail anvil again, thereby can smoothly pull-back push-type broach pole to initial position, more make things convenient for doctor's operation.

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 head of an stapler according to an embodiment of the invention ;

FIG. 2 is a distal side view of the head of a stapler according to an embodiment of the invention ;

FIG. 3 is a cross-sectional view taken in the direction AA of FIG. 2;

fig. 4 is a schematic structural diagram of a pusher bar according to an embodiment of the present invention ;

figure 5 is a distal side view of the pusher bar of an embodiment of the present invention ;

FIG. 6 is a perspective view of an anvil of an embodiment of the present invention ;

FIG. 7 is a side view of the proximal end of an anvil of an embodiment of the present invention ;

FIG. 8 is an anvil side view of an anvil of an embodiment of the present invention ;

FIG. 9 is an enlarged view at B in FIG. 8;

fig. 10 is an enlarged view at C in fig. 8.

Reference numerals:

1 nail bin rack 5 second incision

Proximal side 51 rectangle of 11 magazine rack

Distal 52 sector of a 12-magazine rack

2 nail anvil 6 push-type knife bar

21 nail anvil's near end side 61 lug

22 anvil distal side 62 cutter

3 cutter groove 63 connecting rod part

31 shielding part 71 anastomosis nail

4 th cutter 72 nail pushing block

9 anastomat 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 among the prior art, the utility model provides an nail anvils that are used for medical anastomat and including the medical anastomat of this nail anvil, medical anastomat includes anastomat body, swing joint the operating handle of medical anastomat body and with body complex pin fin portion, the inside of anastomat body is provided with can follow the axial displacement's of medical anastomat broach pole, the distal end side of broach pole is provided with connecting rod portion and lug, the width of lug is greater than the width of connecting rod portion, the pin fin portion includes nail storehouse and nail anvil, the nail anvil includes seted up the edge on the nail hammering block face of nail anvil the cutter groove that the axial direction of medical anastomat extended, the inside formation in cutter groove the accommodation space of lug, just the cutter groove in opening width on the nail hammering block face is in the width of connecting rod portion with between the width of lug, from this the cutter arbor can follow the extending direction axial motion in cutter groove.

The th incision point is arranged on the distal end side of the incision groove, when the anastomat is fired, the push cutter rod moves towards the distal end side along the incision groove, when the protrusion moves to be positioned on the distal end side of the incision groove, the protrusion can be separated from the accommodating space through the th incision point, the nail bin and the nail anvil can be opened at the moment, when the push cutter rod is pulled back after being separated from the nail anvil, the resistance of tissues between the nail bin and the nail anvil cannot be received, and the pull back is smoother.

The structure of the stapler and the nail anvil of the present invention will be described in detail with reference to fig. 1 to 10.

As shown in fig. 1 to 5, the medical stapler includes a stapler body 9 and a staple head located at a distal end side of the stapler body 9, and a push-type knife bar 6 movable along an axial direction of the medical stapler is provided in the stapler body 9. The nail head comprises a nail bin frame 1 and a nail anvil 2, and a nail bin (not marked in the figure) is arranged in the nail bin frame 1. The distal end side of the pusher bar 6 is provided with a link portion 63 and a projection 61, and a width d2 of the projection 61 is larger than a width d1 of the link portion 63. The nail bin is provided with anastomotic nails 71, and the proximal end side of the nail bin is provided with a nail pushing block 72. In an initial state, the push knife rod 6 is located at the near end side of the nail anvil 2, when the anastomat is fired, the push knife rod 6 axially moves towards the far end side of the nail anvil 2, the anastomosis nail 71 is pushed out through the nail pushing block 72, tissues are anastomosed, and meanwhile, a cutter at the far end side of the push knife rod 6 cuts the tissues, so that the anastomosis and the cutting of the tissues are realized.

In the present invention, the distal side and the proximal side are relative to the operator, wherein the distal side refers to the end further away from the operator and the proximal side refers to the end closer to the operator, for example, in the view of FIG. 1, the distal side 12 of the cartridge rack 1 refers to the end on the left in the figure and the proximal side 11 of the cartridge rack 1 refers to the end on the right in the figure, in the view of FIG. 3, the distal side 22 of the anvil 2 refers to the end on the left in the figure and the proximal side 21 of the anvil 2 refers to the end on the right in the figure, the axial direction of the medical stapler refers to the direction pointing from the proximal side to the distal side of the medical stapler, i.e., the direction pointing from the right to the left in FIG. 1, for components, the inner side thereof refers to the side closer to the axial center of the stapler relative to the outer side thereof. for components, the length refers to the length of the component in the axial direction of the stapler, the width of the link portion in the view of the link portion 8661 and the link portion in the view of the link portion.

As shown in fig. 6 to 9, a cutter groove 3 extending along the axial direction of the medical stapler is formed on the anvil surface of the anvil 2, and the cutter groove 3 may be communicated to the outer side surface of the anvil 2. In other alternative embodiments, the cutter slot 3 may not communicate with the outer side of the anvil 2. The interior of the pocket 3 forms a receiving space for the projection 61, the width d4 of which is greater than the width d2 of the projection 61, so that the projection 61 can be received for axial movement therein. The opening of the knife channel 3 in the anvil surface has a blocking portion 31 such that the opening width d3 of said knife channel 3 is smaller than the width d4 of the receiving space. The opening width d3 of the cutter groove 3 on the anvil surface is between the width d1 of the link part 63 and the width d2 of the lug 61, i.e. the width d1 of the link part 63 is smaller than the opening width d3 of the cutter groove 3, and the opening width d3 of the cutter groove 3 is smaller than the width d2 of the lug 61. When the push knife rod 6 moves along the axial direction of the cutter groove 3, the convex block 61 of the push knife rod 6 is clamped in the accommodating space of the cutter groove 3 and can not be separated from the nail anvil 2.

As can be seen from figures 4 and 5, the side surface of the distal end of the push-knife rod 6 is shaped like H, that is, in the view angle of figure 5, not only the upper part is provided with the projection 61, but also the lower part is provided with the projection, and the lower projection can be clamped in the nail bin, therefore, when the anastomat is fired, the nail bin and the nail anvil 2 can not be opened under the matching action of the projections at the upper and lower ends of the push-knife rod 6, the nail bin and the nail anvil 2 during the axial movement of the push-knife rod 6.

The distal end side of the cutter groove 3 is provided with an th cutter blade 4, when the anastomat is fired, the cutter pushing rod 6 moves to the distal end side of the anastomat along the cutter groove 3, when the projection 61 moves to be positioned at the distal end side of the cutter groove 3 in the accommodating space, the projection 61 can be separated from the accommodating space through the th cutter blade 4, namely, the cutter pushing rod 6 and the nail anvil 2 can be separated, at the moment, the nail bin and the nail anvil 2 can be opened, the cutter pushing rod 6 is separated from the nail anvil 2, at the moment, the cutter pushing rod 6 is pulled back, the resistance of tissues between the nail bin and the nail anvil 2 is not applied, and the pulling back is smoother.

In this embodiment, the tab 61 is a square tab 61, the th cutting edge 4 is a square opening, the th cutting edge 4 has a width d5 and a length greater than the width d2 and the length of the tab 61, respectively, so that the tab 61 can be easily disengaged from the th cutting edge 4.

It is understood that the shape of the protrusion may be other than square, and the th cutting edge 4 may be shaped to allow the protrusion 61 to be disengaged.

Upon resetting of the stapler after firing, the pusher bar 6 is pulled back to the initial position. At this time, since the pusher bar 6 is in a state of being separated from the anvil 2, the distal end side of the pusher bar 6 does not enter the cutter groove 3. If the stapler needs to be reused, the head of the nail needs to be removed and reinstalled or replaced. This results in an increase in cost and a complication of operation. In view of this, as shown in fig. 8 and 10, in this embodiment, the proximal end side of the cutter slot 3 is further opened with a second cutter edge 5, and after the stapler is fired and reset, when the projection 61 is located at the proximal end side of the cutter slot 3, the projection 61 can enter the accommodating space from the second cutter edge 5.

In this embodiment, the protrusion 61 is a square protrusion 61, the second incision 5 may be a square opening, the width d6 and the length of the second incision 5 are respectively greater than the width d2 and the length of the protrusion 61, and the protrusion 61 may conveniently enter the accommodating space from the second incision 5, so that only the nail cartridge needs to be replaced without reinstalling the whole nail head, thereby saving the use cost of the stapler and reducing the operation steps of the doctor.

As shown in fig. 10, in this embodiment, the second cutting edge 5 includes square portion 51 and fan portion 52, the square portion 51 is located on the distal end side of the fan portion 52, and two radial sides of the fan portion 52 are in contact with two opposite sides of the square portion 51.

The bump 61 is a square bump 61, the width d6 of the square part 51 is respectively greater than the width d2 of the bump 61, the maximum width d7 of the fan-shaped part 52 is greater than the width d6 of the square part 51, and the total length of the second cutting edge 5 is greater than the length of the bump 61. The design of the sector 52 can provide a guiding function when the protrusion 61 passes through the second cutting edge 5, so that the protrusion 61 can be more conveniently installed inside the accommodating space through the second cutting edge 5.

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

The nail anvil is characterized by being used for a medical anastomat, wherein the medical anastomat comprises a push knife rod capable of moving along the axial direction of the medical anastomat, a connecting rod part and a convex block are arranged on the far end side of the push knife rod, and the width of the convex block is greater than that of the connecting rod part;

a cutter groove extending along the axial direction of the medical anastomat is formed in the anvil surface of the anvil, an accommodating space of the bump is formed in the cutter groove, and the opening width of the cutter groove on the anvil surface is between the width of the connecting rod part and the width of the bump;

the distal side of the cutter groove is provided with a th cutter edge, and when the lug is positioned on the distal side of the cutter groove, the lug can be disengaged from the accommodating space through the th cutter edge.
2. The anvil of claim 1, wherein said projection is a square projection and said th cutting edge is a square opening.
3. The anvil of claim 2, wherein said th cutting edge has a width and length that are greater than a width and length, respectively, of said tab.
4. The anvil of claim 1 wherein said knife channel further defines a second knife edge on a proximal side thereof, said projection being adapted to pass through said second knife edge into said receiving space when said projection is disposed on said proximal side of said knife channel.
5. The anvil of claim 4 wherein said projection is a square projection and said second knife edge is a square opening, said second knife edge having a width and length greater than a width and length of said projection, respectively.
6. The anvil of claim 4 wherein said second knife edge comprises an square and a sector, said square being located on a distal side of said sector, two radial sides of said sector meeting two opposing sides of said square.
7. The anvil of claim 6, wherein said projection is a square projection, said square portion having a width greater than a width of said projection, said second cutting edge having a length greater than a length of said projection.
8. The anvil of claim 1 wherein said knife channel communicates to a lateral side of said anvil.
A medical stapler of the kind 9, , comprising an anvil of any of the claims 1-8, .