Stapler

Abstract

The present invention discloses a stapler, which includes a main body, a handheld part and a working part, wherein the handheld part and the working part are respectively located at two ends of the main body, the working part includes a nail anvil, a nail plate for installing a suture nail and a mounting part, the nail plate is arranged on the mounting part in a hinged manner, the nail anvil is arranged on the mounting part, and the space area between the nail plate and the nail anvil is where the tissue to be sutured is located, the handheld part includes a handheld handle and a movable handle, the handheld handle is installed on the main body, the movable handle is installed on the handheld handle in a hinged manner, and the movable handle swings the nail plate through a traction part. The tissue to be sutured is placed between the nail plate and the nail anvil, the nail plate is pulled toward the nail anvil through the movable handle and the traction part, the suture needle passes through the tissue to be sutured, and the tip of the suture needle bends under the interaction between the suture needle and the nail anvil, thereby completing the suture. The present invention has a reasonable structure and is easy to operate, and can be widely used in the field of medical device technology.

Description

Technical Field

[0001] The present invention relates to the technical field of medical instruments, in particular to a stapler. Background Art

[0002] Digestive tract defects, especially digestive tract perforations, are common problems encountered during endoscopic treatment. At present, endoscopic treatment methods include titanium clip closure suture, nylon rope and titanium clip purse-string suture, and some suturing devices reported abroad. The first two are the most commonly used methods in China and have certain limitations. Due to the limited opening angle of the titanium clip, large perforations cannot be effectively closed. In addition, delayed perforations with congestion and swelling of the mucosa at the edge of the perforation also have difficulty in closing the perforation wound with titanium clips. Nylon rope combined with titanium clip purse-string suture can repair larger perforations, but the flexibility is poor. Summary of the invention

[0003] In order to solve the above technical problems and facilitate tissue suturing in endoscopic minimally invasive technology, the technical solution adopted by the present invention is as follows:

[0004] The present invention provides a stapler, which comprises a main body, a hand-held part and a working part, wherein the hand-held part and the working part are respectively located at two ends of the main body, the working part comprises a staple anvil, a staple plate for mounting staples and a mounting part, the staple plate is hingedly arranged on the mounting part, the staple anvil is arranged on the mounting part, a space area between the staple plate and the staple anvil is where tissue to be sutured is located, the hand-held part comprises a hand-held handle and a movable handle, the hand-held handle is mounted on the main body, the movable handle is hingedly mounted on the hand-held handle, and the movable handle causes the staple plate to swing through a traction part.

[0005] Furthermore, the mounting portion is formed with a first mounting structure, the nail plate is arranged with a first hinged portion, and the first hinged portion is mounted with the first mounting structure via a first hinge shaft.

[0006] Furthermore, the first mounting structure is formed with two first protruding ends, the first hinged portion is located between the two first protruding ends, and the first hinged axis passes through the two first protruding ends and the first hinged portion.

[0007] Furthermore, the first hinged portion is arranged with a second connecting shaft, and the traction portion applies force to the nail plate through the second connecting shaft.

[0008] Furthermore, second connecting parts are respectively arranged at both ends of the second connecting shaft.

[0009] Furthermore, one end of the traction part is formed with two fixing parts, and the fixing parts are installed corresponding to the second connecting part.

[0010] Furthermore, the ends of the two second connecting parts away from the second connecting axis are connected to each other, and one end of the traction part is formed with one or more fixing parts for fixing with the second connecting part.

[0011] Furthermore, the anvil has a working surface, and the working surface is formed with a working groove corresponding to the suture staple.

[0012] Furthermore, the working groove includes a transverse groove and vertical grooves located at both ends of the transverse groove.

[0013] Furthermore, the nail plate is formed with mounting grooves for mounting suture nails.

[0014] Furthermore, end walls are formed at both ends of the installation groove.

[0015] Furthermore, a limiter is arranged on the side wall of the installation groove, and the limiter has a limit protrusion.

[0016] Furthermore, the limiter includes a first part, a second part and a third part, the first part and the second part are arranged opposite to each other, the limiting protrusion is located on one side of the second part, and the first part is installed with the second part through the third part.

[0017] Furthermore, the nail plate is formed with a receiving groove for placing the limiter.

[0018] Furthermore, a fourth through hole communicating with the mounting groove is formed on the side wall of the accommodating groove, and the limiting protrusion passes through the fourth through hole.

[0019] Furthermore, the main body is formed with a first through hole through which the traction part can pass.

[0020] Furthermore, a positioning hole is formed on the movable handle, a rotatable positioning arm is arranged on the hand-held handle, and a positioning protrusion corresponding to the positioning hole is formed on the positioning arm.

[0021] Furthermore, a locking nut is arranged at the hinge between the movable handle and the hand-held handle.

[0022] Furthermore, a rotatable positioning support is arranged on the movable handle, and a positioning groove corresponding to the positioning support is formed on the handheld handle.

[0023] Furthermore, a torsion spring is arranged on the hinge axis between the movable handle and the hand-held handle.

[0024] Furthermore, the movable handle includes a third connecting portion for connecting the traction portion and a holding portion for holding.

[0025] Furthermore, the gripping portion is formed with a wave-shaped structure.

[0026] Furthermore, the main body is formed with a second through hole, and a wire for conducting high-frequency electricity to the suture nail is arranged in the second through hole.

[0027] Furthermore, a third through hole is formed on the side of the handle for the wire to pass through.

[0028] Furthermore, it also includes a surgical mirror.

[0029] Furthermore, the mounting portion is located at the end of the surgical mirror, and the main body is mounted on the side of the surgical mirror through at least one fastener.

[0030] Furthermore, the fastener is formed with a fifth through hole through which the main body can pass.

[0031] Furthermore, the nail plate is formed with a notch corresponding to the surgical mirror.

[0032] Beneficial effect: The tissue to be sutured is placed between the nail plate and the nail anvil, and the nail plate is pulled toward the nail anvil by the movable handle and the traction part, and the suture needle passes through the tissue to be sutured, and the tip of the suture needle bends under the interaction between the suture needle and the nail anvil, thereby completing the suture. The present invention has a reasonable structure and is easy to operate, and can be widely used in the field of medical device technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 1 is a structural diagram of the stapler, in which the middle of the main body and the surgical mirror are cut off, the working part is the structure of the first embodiment, and the handheld part is the structure of the first embodiment;

[0034] Figure 2 for Figure 1 Exploded view of the middle stapler;

[0035] Figure 3 for Figure 1 A front view of the stapler, showing the staple plate and the anvil in a properly closed state;

[0036] Figure 4 This is the structural diagram of the installation part;

[0037] Figure 5 is a structural diagram of a first hinged portion, a first hinged axis, a second connecting axis, and a second connecting portion;

[0038] Figure 6 A structural diagram of a nail plate filled with suture nails;

[0039] Figure 7 for Figure 6 Cross-sectional view of the middle nail plate;

[0040] Figure 8 for Figure 7 Partial view of area A in the middle;

[0041] Fig. 9 for Figure 6 Partial view of area B in the middle;

[0042] Fig.10 It is the structural diagram of the limiter;

[0043] Fig.11 A structural diagram for loading suture staples on a staple plate;

[0044] Fig.12This is a structural diagram of the suture nail tip on the nail plate after bending;

[0045] Fig.13 This is an exploded view of the third embodiment of the handheld part;

[0046] Fig.14 is a cross-sectional view of the third embodiment of the handheld part;

[0047] Fig.15 is a structural diagram of a stapler, in which the working part is the structure of the second embodiment and the hand-held part is the structure of the first embodiment;

[0048] Fig.16 for Fig.15 Exploded view of the middle stapler;

[0049] Fig.17 for Fig.15 A front view of the middle stitcher;

[0050] Fig.18 This is a structural diagram of the first hinged portion, the first hinged shaft, the second connecting shaft, the second connecting portion and the traction portion in the second embodiment of the working portion. DETAILED DESCRIPTION

[0051] Combine the following Figures 1 to 18 The present invention is further described.

[0052] The present invention relates to a stapler, which comprises a main body 11, a hand-held part and a working part, wherein the hand-held part and the working part are respectively located at two ends of the main body 11, and the working part passes a staple through a tissue to be stapled and bends the tip of the staple, wherein the shape of the staple is similar to that of a staple needle used in a stapler.

[0053] The working part includes a nail anvil 12, a nail plate 13 for installing suture nails, and a mounting part 14. The nail plate 13 is arranged on the mounting part 14 in a hinged manner, and the nail anvil 12 is arranged on the mounting part 14. The space between the nail plate 13 and the nail anvil 12 is where the tissue to be sutured is located.

[0054] When using the stapler, a large-angle endoscopic forceps, endoscopic foreign body forceps, or endoscopic tripod forceps are needed to clamp the tissue to be sutured and pull it into the space area between the staple plate and the staple anvil for suturing.

[0055] The hand-held part includes a hand-held handle 15 and a movable handle. The hand-held handle 15 is mounted on the main body 11. The movable handle is hingedly mounted on the hand-held handle 15. The movable handle swings the nail plate 13 through the traction part 16. The main body 11 is formed with a first through hole through which the traction part 16 can pass. The traction part 16 is made of a metal material with both hardness and elasticity. A torsion spring is arranged on the hinge axis of the movable handle and the hand-held handle 15, and the torsion spring facilitates the reset of the nail plate 13 after suturing.

[0056] The movable handle includes a third connection portion 34 for connecting the traction portion 16 and a gripping portion 35 for gripping, and the third connection portion 34 and the gripping portion 35 form a V-shaped structure. The gripping portion 35 is formed with a wave-shaped structure to increase friction during operation.

[0057] The movable handle pulls the traction part 16 with the hinge point as the fulcrum, and the traction part 16 drives the nail plate 13 to hit the nail anvil 12, the suture nail pierces the tissue to be sutured, the tip of the suture nail bends, the nail plate 13 is reset, and the suture nail is separated from the nail plate 13.

[0058] The anvil 12 has a working surface, and the working surface is formed with a working groove corresponding to the suture staple, and the working groove includes a transverse groove 23 and vertical grooves 24 located at both ends of the transverse groove 23. After the suture staple pierces the tissue to be sutured, the two tips of the suture staple respectively support the bottom walls of the two vertical grooves 24, and the nail plate 13 continues to swing toward the anvil 12, and the tip of the suture staple moves along the vertical groove 24, and the two tips enter the transverse groove 23, and then the two tips of the suture staple are relatively bent under the impact of the nail plate 13 on the anvil 12.

[0059] The stapler also includes a surgical mirror 38, and the mounting portion 14 is located at the end of the surgical mirror 38. The mounting portion 14 is a sleeve structure set on the end of the surgical mirror 38. The main body 11 is installed on the side of the surgical mirror 38 through at least one fastener 39, and the fastener 39 is formed with a fifth through hole for the main body 11 to pass through. The nail plate 13 is formed with a notch corresponding to the surgical mirror 38, and the notch is designed to prevent the nail plate 13 from blocking the surgical field when swinging toward the nail anvil 12.

[0060] The mounting portion 14 is formed with a first mounting structure 17, and the nail plate 13 is provided with a first hinge portion 18, which is mounted with the first mounting structure 17 via a first hinge shaft 19, and the nail plate 13 swings around the first hinge shaft 19. The first mounting structure 17 is formed with two first protruding ends, the first hinge portion 18 is located between the two first protruding ends, and the first hinge shaft 19 passes through the two first protruding ends and the first hinge portion 18.

[0061] The first hinged portion 18 is provided with a second connecting shaft 20 , which is offset from the first hinged shaft 19 . The traction portion 16 applies force to the nail plate 13 through the second connecting shaft 20 , thereby causing the nail plate 13 to swing.

[0062] The second connecting shaft 20 is provided with a second connecting portion 21 at both ends, and one end of the traction portion 16 is formed with two fixing portions 22, which are installed corresponding to the second connecting portion 21, and the fixing portion 22 is located at one end of the second connecting portion 21, and the installation position of the fixing portion 22 is located on the same side as the position of the nail plate 13. This can be regarded as the first embodiment of the working portion.

[0063] The ends of the two second connecting parts 21 away from the second connecting shaft 20 are connected to each other, that is, the two second connecting parts 21 form an annular structure, and the mounting part 14 is located in the annular structure. One end of the traction part 16 is formed with one or more fixing parts 22 for fixing with the second connecting part 21, and the installation position of the fixing part 22 is opposite to the position of the nail plate 13. This can be regarded as the second embodiment of the working part.

[0064] The nail plate 13 is formed with an installation groove 25 for installing suture nails. The two ends of the installation groove 25 are respectively formed with end walls. The end walls of the installation groove 25 can prevent the position of the suture nail from being offset and avoid the suture nail from being misaligned with the working groove.

[0065] A limiter 26 is arranged on the side wall of the installation groove 25 . The limiter 26 has a limit protrusion 27 . The suture staples are loaded into the installation groove 25 , and the limiter 26 prevents the suture staples from falling out of the installation groove 25 .

[0066] The stopper 26 includes a first portion 28, a second portion 29 and a third portion, the first portion 28 and the second portion 29 are arranged opposite to each other, the first portion 28 is installed with the second portion 29 through the third portion, and the stopper protrusion 27 is located on one side of the second portion 29. The stopper 26 is a U-shaped structure, and the stopper 26 is elastic, so when the suture staples are loaded, the suture staples squeeze the area between the stopper protrusion 27 and the side wall of the installation groove 25. The two sides of the stopper protrusion 27 are respectively formed with inclined guide surfaces to facilitate the loading of the suture staples into the installation groove 25 and the detachment of the suture staples from the installation groove 25.

[0067] The nail plate 13 is formed with a receiving groove 40 for accommodating the limiter 26 , and the side wall of the receiving groove 40 is formed with a fourth through hole communicating with the installation groove 25 , the limiting protrusion 27 passes through the fourth through hole, and the side surface of the second part 29 abuts against the inner wall of the receiving groove 40 .

[0068] A positioning hole 31 is formed on the movable handle, and a rotatable positioning arm 30 is arranged on the hand-held handle 15. The positioning arm 30 is formed with a positioning protrusion corresponding to the positioning hole 31. It can also be designed that the positioning arm 30 is formed with a positioning hole 31 and the movable handle is formed with a positioning protrusion, which can be regarded as the first embodiment of the hand-held part. When the surgical mirror 38 arranged with the mounting portion 14 is inserted into the patient's digestive tract cavity, in order to prevent the suture nail from piercing and damaging the tissue, the space area between the nail plate 13 and the nail anvil 12 should be properly closed, so that the tip of the suture nail is placed in the vertical groove 24 of the working groove but the tip is not subjected to force, and the positioning protrusion of the positioning arm 30 is engaged with the positioning hole 31 to keep the nail plate 13 and the nail anvil 12 in this properly closed state.

[0069] A locking nut is arranged at the hinge between the movable handle and the hand-held handle 15, and the nail plate 13 and the nail anvil 12 are locked in a properly closed state through the locking nut. This can be regarded as the second embodiment of the hand-held part.

[0070] A rotatable positioning support 32 is arranged on the movable handle, and a positioning groove 33 corresponding to the positioning support 32 is formed on the hand-held handle 15. The end of the positioning support 32 presses against the positioning groove 33, so that the nail plate 13 and the nail anvil 12 are kept in a properly closed state. It is also possible to design that the movable handle is formed with the positioning groove 33 and the positioning support 32 is arranged on the hand-held handle 15. This can be regarded as the third embodiment of the hand-held handle 15.

[0071] The main body 11 is formed with a second through hole, and a wire 36 for conducting high-frequency electricity to the suture nail is arranged in the second through hole. A third through hole 37 for the wire 36 to pass through is formed on the side of the handle 15. The wire 36 passes through the third through hole 37 and is connected to an external device. At the working part, in order to prevent the wire 36 from interfering with the suturing action, in the first embodiment of the working part, the wire 36 is routed along the side of the nail plate 13, and in the second embodiment of the working part, the wire 36 is first routed along the second connecting part 21 and then along the side of the nail plate 13.

[0072] If the tissue to be sutured is thick and difficult to puncture, high-frequency cutting can be used to cut a perforation in the tissue to be sutured, and the suture staple is then passed through the perforation.

[0073] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A stapler, characterized in that: The invention comprises a main body (11), a hand-held part and a working part, wherein the hand-held part and the working part are respectively located at two ends of the main body (11); the working part comprises a nail anvil (12), a mounting part (14) and a nail plate (13) for mounting suture nails; the nail plate (13) is arranged on the mounting part (14) in a hinged manner; the nail anvil (12) is arranged on the mounting part (14); a space region where tissue to be sutured is located is located between the nail plate (13) and the nail anvil (12); the hand-held part comprises a hand-held handle (15) and a movable handle; the hand-held handle (15) is mounted on the main body (11); the movable handle is mounted on the hand-held handle (15) in a hinged manner; the movable handle causes the nail plate (13) to swing through a traction part (16); The nail plate (13) is formed with a mounting groove (25) for mounting suture nails; A limiter (26) is arranged on the side wall of the installation groove (25), and the limiter (26) has a limit protrusion (27); The nail plate (13) is formed with a receiving groove (40) for accommodating the stopper (26); A fourth through hole communicating with the mounting groove (25) is formed on the side wall of the accommodating groove (40), and the limiting protrusion (27) passes through the fourth through hole.

2. The stapler according to claim 1, characterized in that: The mounting portion (14) is formed with a first mounting structure (17), the nail plate (13) is arranged with a first hinged portion (18), and the first hinged portion (18) is mounted on the first mounting structure (17) via a first hinged shaft (19).

3. The stapler according to claim 2, characterized in that: The first mounting structure (17) is formed with two first protruding ends, the first hinged portion (18) is located between the two first protruding ends, and the first hinged shaft (19) passes through the two first protruding ends and the first hinged portion (18).

4. The stapler according to claim 2 or 3, characterized in that: The first hinged portion (18) is provided with a second connecting shaft (20), and the traction portion (16) applies force to the nail plate (13) via the second connecting shaft (20).

5. The stapler according to claim 4, characterized in that: Second connecting parts (21) are respectively arranged at both ends of the second connecting shaft (20).

6. The stapler according to claim 5, characterized in that: One end of the traction portion (16) is formed with two fixing portions (22), and the fixing portions (22) are mounted corresponding to the second connection portion (21).

7. The stapler according to claim 5, characterized in that: The ends of the two second connecting parts (21) away from the second connecting shaft (20) are connected to each other, and one end of the traction part (16) is formed with one or more fixing parts (22) for fixing to the second connecting part (21).

8. The stapler according to claim 1, characterized in that: The nail anvil (12) has a working surface, and the working surface is formed with a working groove corresponding to the suture nail.

9. The stapler according to claim 8, characterized in that: The working groove comprises a transverse groove (23) and vertical grooves (24) located at two ends of the transverse groove (23).

10. The stapler according to claim 1, characterized in that: End walls are formed at both ends of the installation groove (25).

11. The stapler according to claim 1, characterized in that: The limiter (26) comprises a first part (28), a second part (29) and a third part. The first part (28) and the second part (29) are arranged opposite to each other. The limit protrusion (27) is located on one side of the second part (29). The first part (28) is mounted on the second part (29) via the third part.

12. The stapler according to claim 1, characterized in that: The main body (11) is formed with a first through hole through which the traction portion (16) can pass.

13. The stapler according to claim 1, characterized in that: A positioning hole (31) is formed on the movable handle, a rotatable positioning arm (30) is arranged on the hand-held handle (15), and a positioning protrusion corresponding to the positioning hole (31) is formed on the positioning arm (30).

14. The stapler according to claim 1, characterized in that: A locking nut is arranged at the hinged joint between the movable handle and the hand-held handle (15).

15. The stapler according to claim 1, characterized in that: A rotatable positioning support member (32) is arranged on the movable handle, and a positioning groove (33) corresponding to the positioning support member (32) is formed on the hand-held handle (15).

16. The stapler according to claim 1, characterized in that: A torsion spring is arranged on the hinge axis between the movable handle and the hand-held handle (15).

17. The stapler according to claim 1, characterized in that: The movable handle comprises a third connection portion (34) for connecting to the traction portion (16) and a gripping portion (35) for gripping.

18. The stapler according to claim 17, characterized in that: The gripping portion (35) is formed with a wave-shaped structure.

19. The stapler according to claim 1, characterized in that: The main body (11) is formed with a second through hole, and the second through hole is provided with a wire (36) for conducting high-frequency electricity to the suture staple.

20. The stapler according to claim 19, characterized in that: A third through hole (37) is formed on the side surface of the hand grip (15) for the wire (36) to pass through.

21. The stapler according to claim 1, characterized in that: Also included is a surgical mirror (38).

22. The stapler according to claim 21, characterized in that: The mounting portion (14) is located at the end of the surgical mirror (38), and the main body portion (11) is mounted on the side of the surgical mirror (38) via at least one fastener (39).

23. The stapler according to claim 22, characterized in that: The fastener (39) is formed with a fifth through hole through which the main body (11) can pass.

24. The stapler according to claim 21, characterized in that: The nail plate (13) is formed with a notch corresponding to the surgical mirror (38).

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