CN112168255B

CN112168255B - End effector for surgical linear stapler

Info

Publication number: CN112168255B
Application number: CN202011201898.0A
Authority: CN
Inventors: 赵辉; 汤美华; 曹永芬
Original assignee: Tianjin People Hospital
Current assignee: Tianjin People Hospital
Priority date: 2020-11-02
Filing date: 2020-11-02
Publication date: 2021-06-22
Anticipated expiration: 2040-11-02
Also published as: CN112168255A

Abstract

The invention discloses an end effector of a surgical linear stitching instrument, which relates to the medical field and comprises an end effector body, wherein one end of the end effector body is connected with a long rod, one side, far away from the end effector body, of one end of the long rod is connected with a handle shell, the outer wall of the handle shell is provided with a push-pull block, and the bottom of the handle shell is provided with a handle; the end effector body comprises a nail abutting seat clamping plate connected to the end of the long rod, the bottom of the nail abutting seat clamping plate is connected with a connecting seat, one end of the connecting seat is connected with a nail abutting seat, an anvil block is arranged on the inner wall of the nail abutting seat, a nail bin is arranged inside the nail abutting seat clamping plate, and a nail bin cover is arranged at the top of the nail bin. The structure of the invention is simple and reasonable in design, safe and convenient in use, and easy in operation, and through the structure of the invention, the percussion of the push plate staple is more convenient and efficient, and the stability of the percussion of the staple is improved.

Description

End effector for surgical linear stapler

Technical Field

The invention relates to the medical field, in particular to an end effector of a surgical linear stitching instrument.

Background

The anastomat is the first stapler in the world, is used for gastrointestinal anastomosis for nearly one century, and is widely used for gastrointestinal surgery until 1978, generally divided into a disposable or reusable anastomat and an imported or domestic anastomat, which is a device used in medicine for replacing the traditional manual suturing.

The surgical instrument includes a distal end effector adapted to be positioned at a desired surgical site, which can engage tissue in a variety of ways to achieve a diagnostic or therapeutic effect, and the prior art end effectors for surgical linear staplers are complex in structural design, difficult to operate, and inefficient in the firing and stability of the staples.

Disclosure of Invention

The invention aims to: in order to solve the problem, the end effector of the surgical linear stapler is simpler and more reasonable in structural design, safe and convenient to use and easy to operate, enables the pushing plate staples to be fired more conveniently and efficiently, and improves the stability when the staples are fired.

In order to achieve the purpose, the invention provides the following technical scheme: the end effector of the surgical linear stitching instrument comprises an end effector body, wherein one end of the end effector body is connected with a long rod, one side, far away from the end effector body, of one end of the long rod is connected with a handle shell, the outer wall of the handle shell is provided with a push-pull block, and the bottom of the handle shell is provided with a handle;

the end effector body comprises a nail abutting seat clamping plate connected to the end of the long rod, the bottom of the nail abutting seat clamping plate is connected with a connecting seat, one end of the connecting seat is connected with a nail abutting seat, an anvil block is arranged on the inner wall of the nail abutting seat, a nail bin is arranged inside the nail abutting seat clamping plate, a nail bin cover is arranged at the top of the nail bin, a protective cover is connected to one side, close to the nail abutting seat, of the end of the nail abutting seat clamping plate, a push rod is inserted into the outer wall of the nail bin cover, one end of the push rod penetrates into the nail bin, the other end of the push rod is connected with a push plate, a first spring is sleeved outside the push rod, a connecting rod is connected to the outer wall of the push plate, a movable seat is connected to the outer portion, located at the outer portion of the long rod, of;

the top of the nail bin is provided with a positioning pin, the top of the positioning pin extends into the push rod, the bottom end of the positioning pin is connected with a supporting plate, the inner wall of the nail bin is provided with limiting frames on two sides of the supporting plate, a second spring is connected between the outer wall of the supporting plate and the inner wall of the nail bin, the other end of the supporting plate is connected with a copper wire, fixed pulleys are mounted on positions on two sides of the copper wire in the nail bin, and one end of the copper wire sequentially penetrates through the insides of the nail bin and the long rod to be in driving connection with the push-pull block and the handle.

Preferably, even seat and support nail seat formula structure as an organic whole, even pass through screw fixed connection between seat and the nail seat splint of supporting.

Preferably, the nail bin cover is fixedly connected with the outer wall of the top of the nail bin through screws, a groove is formed in the nail bin cover corresponding to the top of the nail bin, and a movable groove is formed in the outer wall of the nail bin cover corresponding to the outer portion of the push rod.

Preferably, the connection mode between the end of the push rod and the outer wall of the push plate is welding.

Preferably, the connecting rod is of an L-shaped structure, and the two ends of the connecting rod are welded with the outer wall of the push plate and the top of the movable seat.

Preferably, the outer wall of the long rod is provided with a T-shaped sliding groove corresponding to the outer part of the T-shaped clamping block in the horizontal direction.

Preferably, the inside of the long rod is provided with a through hole corresponding to the outside of the copper wire.

Preferably, the fixed pulley is connected with a fixed frame outside, the fixed frame is fixedly connected with the inner wall of the nail bin through bolts, and a rotating shaft is connected between the middle part of the fixed pulley and the end part of the fixed frame.

Preferably, a positioning groove is arranged at the bottom of the push rod corresponding to the top of the positioning pin.

Preferably, the two end parts of the second spring are welded with the outer wall of the abutting plate and the inner wall of the nail bin.

Compared with the prior art, the invention has the beneficial effects that:

1. when the novel nail clipper is not used, the first spring is in a stretching state, the arranged copper wire is connected with the top of the handle, the push-pull block is used for clamping and fixing the handle and driving the movable seat to move when the handle is pulled, the push-pull block and the movable seat are linked through the traction rope, the situation that the handle rotates and pulls the copper wire to enable a nail to be ejected when the handle is not normally used is avoided, when the novel nail clipper is used, the copper wire is pulled, due to the limiting effect of the fixed pulley, a supporting plate connected to the end portion of the copper wire descends and drives the positioning pin to descend, at the moment, the second spring stretches, the supporting plate can stably descend due to the limiting of the limiting frame, after the positioning pin is separated from the bottom of the push rod, the first spring resets from the stretching state, and the push;

2. fixed connection connecting rod between the sliding seat that sets up on the push pedal of setting and the stock, the T type fixture block that the sliding seat inner wall set up can be stable slides inside the T type spout of stock outer wall, and then make the sliding seat can drive the push pedal and stabilize the activity, stability when percussion nail has been improved, once after the percussion, the pulling pushes away and draws the piece and drive the sliding seat and remove, and make first spring stretch once more, the push rod resets, loosen the handle, the locating pin card is gone into the bottom of push rod once more and is carried on spacingly, this moment after pushing away and drawing the piece, the sliding seat keeps the stationary state, then, repeat the above-mentioned operation and can facilitate the use, the structure design is simple and reasonable, and is safe and convenient to.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the mounting structure of the upper end effector body of the linear stapler of the present invention;

FIG. 3 is an enlarged view of portion A of FIG. 1 in accordance with the present invention;

FIG. 4 is a schematic view of the magazine cover of the present invention;

FIG. 5 is a schematic view of a connection structure of the nail-abutting seat and the clamping plate of the nail-abutting seat in the present invention;

FIG. 6 is a schematic structural view of a movable seat of the present invention;

FIG. 7 is a cross-sectional view of the present invention;

FIG. 8 is an enlarged view of portion B of FIG. 7 in accordance with the present invention;

FIG. 9 is a schematic structural view of a crown block according to the present invention;

in the figure: 1. a long rod; 2. a handle shell; 3. a push-pull block; 4. a handle; 5. a nail abutting seat clamping plate; 6. connecting seats; 7. a nail abutting seat; 8. a movable groove; 9. a nail bin cover; 10. an anvil block; 11. a protective cover; 12. a staple cartridge; 13. a push rod; 14. pushing the plate; 15. a first spring; 16. a connecting rod; 17. a movable seat; 18. a T-shaped fixture block; 19. a T-shaped chute; 20. a copper wire; 21. a through hole; 22. a fixed pulley; 23. a resisting plate; 24. a limiting frame; 25. positioning pins; 26. a second spring; 221. a fixed mount; 222. and rotating the shaft.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. The following describes an embodiment of the present invention based on its overall structure.

Referring to fig. 1-9, the end effector of the surgical linear stapler comprises an end effector body, one end of the end effector body is connected with a long rod 1, one side of one end of the long rod 1, which is far away from the end effector body, is connected with a handle shell 2, the outer wall of the handle shell 2 is provided with a push-pull block 3, and the bottom of the handle shell 2 is provided with a handle 4;

the end effector body comprises a nail abutting seat clamping plate 5 connected with the end of the long rod 1, the bottom of the nail abutting seat clamping plate 5 is connected with a connecting seat 6, one end of the connecting seat 6 is connected with a nail abutting seat 7, the inner wall of the nail abutting seat 7 is provided with an anvil block 10, a nail bin 12 is arranged inside the nail abutting seat clamping plate 5, a nail bin cover 9 is arranged at the top of the nail bin 12, one side of the end part of the nail abutting seat clamping plate 5, which is close to the nail abutting seat 7, is connected with a protective cover 11, a push rod 13 is inserted into the outer wall of the nail bin cover 9, one end of the push rod 13 penetrates into the nail bin 12, and the other end of the push rod 13 is connected with a push plate 14, the outside of the push rod 13 is sleeved with a first spring 15, the outer wall of the push plate 14 is connected with a connecting rod 16, the bottom end of the connecting rod 16 is positioned outside the long rod 1 and is connected with a movable seat 17, the two inner side walls of the movable seat 17 are provided with T-shaped fixture blocks 18 at positions close to the two outer walls of the long rod 1;

the top of the nail bin 12 is provided with a positioning pin 25, the top of the positioning pin 25 extends into the push rod 13, the bottom end of the positioning pin 25 is connected with a resisting plate 23, the inner wall of the nail bin 12 located on two sides of the resisting plate 23 is provided with a limiting frame 24, a second spring 26 is connected between the outer wall of the resisting plate 23 and the inner wall of the nail bin 12, the other end of the resisting plate 23 is connected with a copper wire 20, the positions of the two sides of the copper wire 20 located in the nail bin 12 are provided with fixed pulleys 22, and one end of the copper wire 20 sequentially penetrates through the nail bin 12 and the inside of the long rod 1 to be in driving connection with the push-pull block 3 and.

As a preferred embodiment of the invention, the connecting seat 6 and the nail abutting seat 7 are of an integrated structure, and the connecting seat 6 and the nail abutting seat clamping plate 5 are fixedly connected through screws, so that the nail abutting seat 7 can be conveniently installed and fixed.

As a preferred embodiment of the present invention, the magazine cover 9 is fixedly connected to the outer wall of the top of the magazine 12 by screws, a groove is formed in the magazine cover 9 corresponding to the top of the magazine 12, and a movable groove 8 is formed in the outer wall of the magazine cover 9 corresponding to the outer portion of the push rod 13, so that the magazine cover 9 can be conveniently mounted and fixed, and the push rod 13 can be conveniently extended and retracted inside the magazine 12 and the magazine cover 9.

As a preferred embodiment of the present invention, the end of the push rod 13 is welded to the outer wall of the push plate 14, so as to facilitate the connection and fixation between the push rod 13 and the push plate 14.

As the preferred embodiment of the invention, the connecting rod 16 is of an L-shaped structure, and the connecting modes between the two ends of the connecting rod 16 and the outer wall of the push plate 14 and the top of the movable seat 17 are both welded, so that the connecting rod 16 is convenient to mount.

As a preferred embodiment of the present invention, a T-shaped sliding slot 19 is horizontally disposed on the outer wall of the long rod 1 corresponding to the outside of the T-shaped fixture block 18, so as to facilitate the stable sliding of the movable seat 17 on the outside of the long rod 1.

As the preferred embodiment of the invention, the inside of the long rod 1 is provided with a through hole 21 corresponding to the outside of the copper wire 20, so that the copper wire 20 can stably pass through the through hole.

As a preferred embodiment of the present invention, a fixing frame 221 is connected to the outside of the fixed pulley 22, the fixing frame 221 is fixedly connected to the inner wall of the magazine 12 by bolts, and a rotating shaft 222 is connected between the middle of the fixed pulley 22 and the end of the fixing frame 221, so as to facilitate the installation and fixation of the fixed pulley 22.

As a preferred embodiment of the present invention, a positioning groove is disposed at a position corresponding to the top of the positioning pin 25 at the bottom of the push rod 13, so that the positioning pin 25 can be stably inserted into the bottom of the push rod 13 for limiting.

In a preferred embodiment of the present invention, the two ends of the second spring 26 are welded to the outer wall of the abutting plate 23 and the inner wall of the staple cartridge 12, so as to facilitate the installation of the second spring 26.

The working principle is as follows: when the invention is used, two ends of a first spring 15 are fixedly connected with the outer wall of a nail bin cover 9 and the outer wall of a push plate 14, when the invention is not used normally, the first spring 15 is in a stretching state, a set copper wire 20 is connected with the top of a handle 4, a push-pull block 3 is used for clamping and fixing the handle 4 and driving a movable seat 17 to move when the invention is pulled, the push-pull block 3 is linked with the movable seat 17 through a traction rope (not shown in the figure) to prevent the handle 4 from rotating and pulling the copper wire 20 to eject a staple when the invention is not used normally, after the copper wire 20 is pulled, a supporting plate 23 connected with the end part of the copper wire 20 descends due to the limiting action of a fixed pulley 22 and drives a positioning pin 25 to descend, at the moment, a second spring 26 stretches, and the supporting plate 23 can stably descend due to the limiting action of a limiting frame 24, and when the positioning pin 25 is separated from the bottom of the push rod 13, the first spring 15, the push plate 14 drives the push rod 13 to rapidly fire the staples, meanwhile, a connecting rod 16 is fixedly connected between the push plate 14 and a movable seat 17 arranged on the long rod 1, a T-shaped clamping block 18 arranged on the inner wall of the movable seat 17 can stably slide in a T-shaped sliding groove on the outer wall of the long rod 1, thereby leading the movable seat 17 to drive the push plate 14 to stably move, improving the stability when the staples are fired, after one-time percussion, the push-pull block 3 is pulled to drive the movable seat 17 to move, the first spring 15 is stretched again, the push rod 13 is reset, the handle 4 is loosened, the positioning pin 25 is clamped into the bottom of the push rod 13 again for limiting, at the moment, after the push-pull block 3 is pushed, the movable seat is kept in a fixed state, and then the operation is repeated to facilitate use, when not in use, the push-pull block 3 does not need to be pushed again after the handle 4 is reset, so that the handle 4 is effectively prevented from rotating to enable the staples to be ejected when the handle is not normally used.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. An end effector of a surgical linear stapler comprising an end effector body, wherein: one end of the end effector body is connected with a long rod (1), one side, far away from the end effector body, of one end of the long rod (1) is connected with a handle shell (2), the outer wall of the handle shell (2) is provided with a push-pull block (3), and the bottom of the handle shell (2) is provided with a handle (4);

the end effector body comprises a nail abutting seat clamping plate (5) connected to the end of a long rod (1), the bottom of the nail abutting seat clamping plate (5) is connected with a connecting seat (6), one end of the connecting seat (6) is connected with a nail abutting seat (7), an anvil block (10) is arranged on the inner wall of the nail abutting seat (7), a nail bin (12) is installed inside the nail abutting seat clamping plate (5), a nail bin cover (9) is installed at the top of the nail bin (12), one side, close to the nail abutting seat (7), of the end of the nail abutting seat clamping plate (5) is connected with a protective cover (11), a push rod (13) is inserted into the outer wall of the nail bin cover (9), one end of the push rod (13) penetrates through the inside of the nail bin (12), the other end of the push rod (13) is connected with a push plate (14), a first spring (15) is sleeved outside the push rod (13), and a connecting rod (16) is, the bottom end of the connecting rod (16) is positioned outside the long rod (1) and is connected with a movable seat (17), and two inner side walls of the movable seat (17) are provided with T-shaped clamping blocks (18) at positions close to two outer walls of the long rod (1);

the top of nail storehouse (12) is provided with locating pin (25), the top of locating pin (25) extends to the inside of push rod (13), and the bottom of locating pin (25) is connected with and supports board (23), the inner wall of nail storehouse (12) is located the both sides of supporting board (23) and all is provided with spacing (24), be connected with second spring (26) between the outer wall of supporting board (23) and the inner wall of nail storehouse (12), and the other end that supports board (23) is connected with copper wire (20), fixed pulley (22) are all installed in the inside both sides position department that is located copper wire (20) of nail storehouse (12), the one end of copper wire (20) is passed the inside of nail storehouse (12) and stock (1) in proper order and is carried out the drive with push-and-pull piece (3) and handle (4) and is connected.

2. The end effector of the surgical linear stapler of claim 1, wherein: the connecting seat (6) and the nail abutting seat (7) are of an integrated structure, and the connecting seat (6) and the nail abutting seat clamping plate (5) are fixedly connected through screws.

3. The end effector of the surgical linear stapler of claim 1, wherein: the nail bin cover (9) is fixedly connected with the outer wall of the top of the nail bin (12) through screws, a groove is formed in the nail bin cover (9) corresponding to the top of the nail bin (12), and a movable groove (8) is formed in the outer wall of the nail bin cover (9) corresponding to the outer portion of the push rod (13).

4. The end effector of the surgical linear stapler of claim 1, wherein: the end part of the push rod (13) is connected with the outer wall of the push plate (14) in a welding mode.

5. The end effector of the surgical linear stapler of claim 1, wherein: the connecting rod (16) is of an L-shaped structure, and the two ends of the connecting rod (16) are welded with the outer wall of the push plate (14) and the top of the movable seat (17).

6. The end effector of the surgical linear stapler of claim 1, wherein: the outer wall of the long rod (1) is provided with a T-shaped sliding groove (19) along the horizontal direction corresponding to the outer part of the T-shaped clamping block (18).

7. The end effector of the surgical linear stapler of claim 1, wherein: the inside of the long rod (1) is provided with a through hole (21) corresponding to the outside of the copper wire (20).

8. The end effector of the surgical linear stapler of claim 1, wherein: the external connection of fixed pulley (22) has mount (221), pass through bolt fixed connection between the inner wall of mount (221) and nail storehouse (12), and be connected with axis of rotation (222) between the middle part of fixed pulley (22) and the tip of mount (221).

9. The end effector of the surgical linear stapler of claim 1, wherein: and a positioning groove is formed in the position, corresponding to the top of the positioning pin (25), of the bottom of the push rod (13).

10. The end effector of the surgical linear stapler of claim 1, wherein: the two end parts of the second spring (26) are welded with the outer wall of the abutting plate (23) and the inner wall of the nail bin (12).