A universal forceps for minimally invasive surgery

Abstract

A universal pliers provided by the present invention comprises a pushing component, a rotating wheel component and a shearing head component; the pushing component includes a handle fixing block; a collar is threadedly connected to the handle fixing block; a notch is provided on the handle fixing block; a handle movable block rotatably connected to the handle fixing block through a rotating shaft is provided at the notch; a through hole is provided on the handle fixing block; a placing groove is provided on the handle movable block; a transmission shaft passing through the through hole is provided in the placing groove; the rotating wheel component includes a circular plate and a rotating wheel; a sleeve sleeved on the surface of the transmission shaft is fixedly connected to the circular plate; the sleeve is connected to the handle fixing block through a limiting member; a second sleeve is fixedly connected to the rotating wheel; the second sleeve is rotatably connected to the sleeve; the circular plate and the rotating wheel are connected through a second limiting member; it is convenient to adjust the angle of the shearing head, convenient for installation and disassembly, and convenient for the upper shearing head and the lower shearing head to clamp.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly relates to a universal pliers for minimally invasive surgery. Background Art

[0002] In minimally invasive endoscopic surgery, the surgical channels are mostly single or multiple small circular incision-like openings, and surgical instruments enter the human body cavity through these surgical channels. In minimally invasive endoscopic surgery, it is often necessary to clamp, trim, and pick up sutures, tissues or instruments from the human body cavity.

[0003] Publication (Announcement) Number: CN205286472U, Application Number: CN201620045222.X, a universal pliers for minimally invasive surgery, comprising a first handle, a second handle, a hollow fixed head rod, a clamp assembly and a pull rod. The first handle is hinged to the second handle, one end of the fixed head rod is fixed on the second handle, the clamp assembly is installed at the other end of the hollow fixed head rod, the pull rod is sleeved in the fixed head rod, one end of the pull rod is connected to the first handle, and the other end of the pull rod is connected to the clamp assembly. A spring is connected in series between the two ends of the fixed head rod, and the pull rod passes through the hollow channel of the spring. Since the fixed head rod connecting the handle and the clamp assembly of the present invention is connected in series with a spring, and since the spring has the functions of stretching and bending memory, during the process of inserting the clamp assembly into the human body cavity, the moving direction of the clamp assembly is changed by bending the spring, so that the clamp assembly can avoid blood vessels and healthy tissues, etc., and thus quickly and conveniently reach the surgical site, improving the safety and use flexibility of the pliers.

[0004] The above patent is not convenient for separately operating the clamping and angle adjustment, is prone to inaccurate positioning, and is not convenient for disassembly and installation. Therefore, we propose a universal pliers for minimally invasive surgery to solve the above problems. Summary of the Invention

[0005] A universal pliers for minimally invasive surgery provided by the present invention has a simple structure, is convenient to use, is convenient for adjusting the angle of the shearing head, is convenient for installation and disassembly, and is convenient for the upper shearing head and the lower shearing head to clamp.

[0006] A universal pliers for minimally invasive surgery provided by the present invention includes a pushing component, a rotating wheel component, and a shearing head component; the pushing component includes a handle fixing block; a collar is threadedly connected to the handle fixing block; a notch is provided on the handle fixing block; a handle movable block rotatably connected to the handle fixing block through a rotating shaft is provided at the notch; a through hole is provided on the handle fixing block; a placement groove is provided on the handle movable block; a transmission shaft passing through the through hole is provided in the placement groove; the rotating wheel component includes a circular plate and a rotating wheel; a sleeve sleeved on the surface of the transmission shaft is fixedly connected to the circular plate; the sleeve is connected to the handle fixing block through a first limiting member; a second sleeve is fixedly connected to the rotating wheel; the second sleeve is rotatably connected to the sleeve; the circular plate and the rotating wheel are connected through a second limiting member; the shearing head component includes an upper shearing head and a lower shearing head rotatably connected to the upper shearing head through a second rotating shaft; one end of the upper shearing head close to the second rotating shaft is a bent structure; a connecting plate is rotatably connected to the bent structure through a third rotating shaft; the connecting plate is hinged to the transmission shaft; a third sleeve is sleeved on the second sleeve; two arc-shaped limiting grooves are provided on the third sleeve; an arc-shaped plate fitting with the second sleeve is provided in the third sleeve; a third limiting post arranged in the arc-shaped limiting groove is fixedly connected to the arc-shaped plate; connecting blocks are respectively fixedly connected to the two arc-shaped plates; a second connecting block is fixedly connected to the lower shearing head; the connecting block is rotatably connected to the second connecting block; a connecting plate is rotatably connected to the connecting block; the connecting plate is rotatably connected to another connecting block; the pushing component facilitates the opening and closing of the upper shearing head and the lower shearing head; the rotating wheel component facilitates the angle adjustment of the shearing head component.

[0007] The first limiting member includes a threaded sleeve fixedly connected to the handle fixing block; a threaded rod is threadedly connected to the threaded sleeve; a fixing rod passing through the threaded rod is slidably connected to the threaded rod; a nut is threadedly connected to the upper end of the fixing rod; a first limiting post arranged at the lower end of the threaded rod is fixedly connected to the fixing rod; a notch is provided on the first limiting post; a spring with the lower end arranged outside the outer end of the notch is provided in the notch.

[0008] A placement tube with a closed lower end is fixedly connected to the handle fixing block; the lower end of the spring is arranged in the placement tube.

[0009] A limiting chuck passing through the notch and adapted to the notch is provided on the transmission shaft.

[0010] The end of the transmission shaft arranged in the placement groove is a spherical structure.

[0011] A limiting groove is provided on the sleeve; a limiting block adapted to the limiting groove is fixedly connected to the inner wall of the collar.

[0012] The rotating wheel is provided with a circular groove; the circular groove is connected with a limiting sliding groove; a second spring fixedly connected to the rotating wheel is arranged in the circular groove; a slider arranged in the circular groove and the limiting sliding groove is in contact with the second spring; a second limiting column is fixedly connected to the slider; a limiting opening is arranged on the circular plate; one end of the second limiting column is arranged in the limiting opening.

[0013] A limiting fixing column is fixedly connected to the second sleeve; the limiting fixing column is arranged between two arc-shaped plates.

[0014] The beneficial effects of the present invention: A universal forceps for minimally invasive surgery provided by the present invention has a simple structure, is convenient to use, facilitates the adjustment of the angle of the shearing head, is convenient for installation and disassembly, and is convenient for the upper shearing head and the lower shearing head to clamp. Description of the Drawings

[0015] Figure 1 It is a sectional view of a universal forceps for minimally invasive surgery of the present invention.

[0016] Figure 2 It is an exploded view of the rotating wheel of a universal forceps for minimally invasive surgery of the present invention.

[0017] Figure 3 It is an exploded view of the first limiting member of a universal forceps for minimally invasive surgery of the present invention.

[0018] Figure 4 It is a position diagram of the handle fixing block and the transmission shaft of a universal forceps for minimally invasive surgery of the present invention.

[0019] Figure 5 It is a structural diagram of the shearing head assembly of a universal forceps for minimally invasive surgery of the present invention.

[0020] Figure 6 It is another structural diagram of the shearing head assembly of a universal forceps for minimally invasive surgery of the present invention.

[0021] Figure 7 It is the third structural diagram at the shearing head assembly of a universal forceps for minimally invasive surgery of the present invention.

[0022] Figure 8 It is a sectional view at the placement tube of a universal forceps for minimally invasive surgery of the present invention.

[0023] Figure 9 It is a sectional view at the limiting block of a universal forceps for minimally invasive surgery of the present invention.

[0024] Figure 10 It is a top view of the position of the handle fixing block and the transmission shaft of a universal forceps for minimally invasive surgery of the present invention.

[0025] Figure 11An enlarged view of location A of a universal forceps for minimally invasive surgery according to the present invention.

[0026] Figure 12 A partial enlarged view of a universal forceps for minimally invasive surgery according to the present invention.

[0027] (1. Handle fixing block; 2. Collar; 3. Rotating shaft; 4. Handle movable block; 5. Placing groove; 6. Transmission shaft; 7. Circular plate; 8. Rotating wheel; 9. Sleeve; 10. Second sleeve; 11. Upper shearing head; 12. Second rotating shaft; 13. Bending structure; 14. Third rotating shaft; 15. Connecting plate; 16. Third sleeve; 17. Arc-shaped limiting groove; 18. Arc-shaped plate; 19. Connecting block; 20. Second connecting block; 21. Connecting plate; 22. Threaded sleeve; 23. Threaded rod; 24. Fixed rod; 25. Nut; 26. First limiting post; 27. Notch; 28. Spring; 29. Placing tube; 30. Limiting chuck; 31. Limiting groove; 32. Limiting block; 33. Circular groove; 34. Limiting sliding groove; 35. Second spring; 36. Slide block; 37. Second limiting post; 38. Limiting opening; 39. Through hole; 40. Limiting opening; 41. Lower shearing head; 42. Third limiting post; 43. Limiting fixing post) Detailed implementation manners

[0028] The present invention will be further described below with reference to the accompanying drawings.

[0029] According to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 、 Figure 10 、 Figure 11 、 Figure 12A universal forceps for minimally invasive surgery is shown, including a pushing component, a rotating wheel component, and a shearing head component; the pushing component includes a handle fixing block 1; a collar 2 is threadedly connected to the handle fixing block 1; a notch is provided on the handle fixing block 1; a handle movable block 4 rotatably connected to the handle fixing block 1 by a rotating shaft 3 is provided at the notch; a through hole 39 is provided on the handle fixing block 1; a placement groove 5 is provided on the handle movable block 4; a transmission shaft 6 passing through the through hole 39 is provided in the placement groove 5; the rotating wheel component includes a circular plate 7 and a rotating wheel 8; a sleeve 9 sleeved on the surface of the transmission shaft 6 is fixedly connected to the circular plate 7; the sleeve 9 is connected to the handle fixing block 1 through a first limiting member; a second sleeve 10 is fixedly connected to the rotating wheel 8; the second sleeve 10 is rotatably connected to the sleeve 9; the circular plate 7 and the rotating wheel 8 are connected through a second limiting member; the shearing head component includes an upper shearing head 11 and a lower shearing head 41 rotatably connected to the upper shearing head 11 by a second rotating shaft 12; one end of the upper shearing head 11 close to the second rotating shaft 12 is a bent structure 13; a connecting plate 15 is rotatably connected to the bent structure 13 by a third rotating shaft 14; the connecting plate 15 is hinged to the transmission shaft 6; a third sleeve 16 is sleeved on the second sleeve 10; two arc-shaped limiting grooves 17 are provided on the third sleeve 16; an arc-shaped plate 18 fitting with the second sleeve 10 is provided in the third sleeve 16; a third limiting post 42 provided in the arc-shaped limiting groove 17 is fixedly connected to the arc-shaped plate 18; connecting blocks 19 are respectively fixedly connected to the two arc-shaped plates 18; a second connecting block 20 is fixedly connected to the lower shearing head 41; the connecting block 19 is rotatably connected to the second connecting block 20; a connecting plate 21 is rotatably connected to the connecting block 19; the connecting plate 21 is rotatably connected to another connecting block 19.

[0030] The first limiting member of the present invention includes a threaded sleeve 22 fixedly connected to the handle fixing block 1; a threaded rod 23 is threadedly connected to the threaded sleeve 22; a fixing rod 24 passing through the threaded rod 23 is slidably connected to the threaded rod 23; a nut 25 is threadedly connected to the upper end of the fixing rod 24; a first limiting post 26 provided at the lower end of the threaded rod 23 is fixedly connected to the fixing rod 24; a notch 27 is provided on the first limiting post 26; a spring 28 with the lower end provided outside the outer end of the notch 27 is provided in the notch 27.

[0031] A placement tube 29 with a blocked lower end is fixedly connected to the handle fixing block 1 of the present invention; the lower end of the spring 28 is provided in the placement tube 29.

[0032] A limiting chuck 30 passing through the notch 27 and adapted to the notch 27 is provided on the transmission shaft 6 of the present invention.

[0033] The end of the transmission shaft 6 provided in the placement groove is a spherical structure.

[0034] A limiting groove 31 is provided on the casing 9 of the present invention; a limiting block 32 adapted to the limiting groove 31 is fixedly connected to the inner wall of the collar 2.

[0035] A circular groove 33 is provided on the rotating wheel 8 of the present invention; a limiting sliding groove 34 is connected to the circular groove 33 in communication; a second spring 35 fixedly connected to the rotating wheel 8 is provided in the circular groove 33; a slider 36 provided in the circular groove 33 and the limiting sliding groove 34 is in contact with the second spring 35; a second limiting column 37 is fixedly connected to the slider 36; a limiting opening 40 is provided on the circular plate 7; one end of the second limiting column 37 is arranged in the limiting opening 40.

[0036] A limiting fixing column 43 is fixedly connected to the second casing 10 of the present invention; the limiting fixing column 43 is arranged between the two arc-shaped plates 18.

[0037] Principle of the present invention: During use, the slider 36 is pushed, the second limiting column 37 comes out of the limiting opening 40, the third casing 16 is fixed, the rotating wheel 8 is rotated to drive the second casing 10 to rotate, the limiting fixing column 43 is arranged between the two arc-shaped plates 18 to drive the arc-shaped plates 18 to rotate. With the assistance of the third limiting column 42 and the arc-shaped limiting groove 17, the two arc-shaped plates 18 move one after the other to drive the second connecting block 20 to move, driving the upper shearing head 11 and the lower shearing head 41 to swing for angle adjustment. Hold the handle fixing block 1, push the stretching handle movable block 4 to squeeze the transmission shaft 6, the transmission shaft 6 pushes the third rotating shaft 14, the third rotating shaft 14 pushes the bending structure 13, and the bending structure 13 rotates around the second rotating shaft 12, and the upper shearing head 11 and the lower shearing head 41 are fitted or opened. Press the nut 25 to drive the fixing rod 24 to move downward, squeeze the spring 28, the limiting clamping head 30 and the notch 27 are no longer engaged, and the second casing 10 can be easily removed for disassembly and cleaning.

[0038] Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Any person familiar with this technology can make various modifications and decorations without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention should be defined by the claims.

Claims

1. A universal forceps for minimally invasive surgery, characterized in that: It includes a pushing component, a rotating wheel component, and a shearing head component; the pushing component includes a handle fixing block (1); a collar (2) is threadedly connected to the handle fixing block (1); a notch is provided on the handle fixing block (1); a handle movable block (4) rotatably connected to the handle fixing block (1) by a rotating shaft (3) is provided at the notch; a through hole (39) is provided on the handle fixing block (1); a placement groove (5) is provided on the handle movable block (4); a transmission shaft (6) passing through the through hole (39) is provided in the placement groove (5); the rotating wheel component includes a circular plate (7) and a rotating wheel (8); a sleeve (9) sleeved on the surface of the transmission shaft (6) is fixedly connected to the circular plate (7); the sleeve (9) is connected to the handle fixing block (1) by a first limiting member; a second sleeve (10) is fixedly connected to the rotating wheel (8); the second sleeve (10) is rotatably connected to the sleeve (9); the circular plate (7) and the rotating wheel (8) are connected by a second limiting member; the shearing head component includes an upper shearing head (11) and a lower shearing head (41) rotatably connected to the upper shearing head (11) by a second rotating shaft (12); one end of the upper shearing head (11) close to the second rotating shaft (12) is a bent structure (13); a connecting plate (15) is rotatably connected to the bent structure (13) by a third rotating shaft (14); the connecting plate (15) is hinged to the transmission shaft (6); a third sleeve (16) is sleeved on the second sleeve (10); two arc-shaped limiting grooves (17) are provided on the third sleeve (16); an arc-shaped plate (18) fitting with the second sleeve (10) is provided in the third sleeve (16); a third limiting post (42) provided in the arc-shaped limiting groove (17) is fixedly connected to the arc-shaped plate (18); connecting blocks (19) are fixedly connected to the two arc-shaped plates (18) respectively; a second connecting block (20) is fixedly connected to the lower shearing head (41); the connecting block (19) is rotatably connected to the second connecting block (20); a connecting plate (21) is rotatably connected to the connecting block (19); the connecting plate (21) is rotatably connected to another connecting block (19); The first limiting member includes a threaded sleeve (22) fixedly connected to the handle fixing block (1); a threaded rod (23) is threadedly connected to the threaded sleeve (22); a fixing rod (24) passing through the threaded rod (23) is slidably connected to the threaded rod (23); a nut (25) is threadedly connected to the upper end of the fixing rod (24); a first limiting post (26) provided at the lower end of the threaded rod (23) is fixedly connected to the fixing rod (24); a notch (27) is provided on the first limiting post (26); a spring (28) with its lower end provided outside the outer end of the notch (27) is provided in the notch (27); A circular groove (33) is provided on the rotating wheel (8); a limiting sliding groove (34) is connected to the circular groove (33) in communication; a second spring (35) fixedly connected to the rotating wheel (8) is provided in the circular groove (33); a slider (36) provided in the circular groove (33) and the limiting sliding groove (34) is in contact with the second spring (35); a second limiting column (37) is fixedly connected to the slider (36); a limiting opening (40) is provided on the circular plate (7); one end of the second limiting column (37) is arranged in the limiting opening (40).

2. The universal forceps for minimally invasive surgery according to claim 1, wherein: A placement tube (29) with a sealed lower end is fixedly connected to the handle fixing block (1); the lower end of the spring (28) is arranged in the placement tube (29).

3. The universal forceps for minimally invasive surgery according to claim 1, characterized in that: A limiting chuck (30) passing through the notch (27) and adapted to the notch (27) is provided on the transmission shaft (6).

4. A universal forceps for minimally invasive surgery according to claim 1, wherein: The end of the transmission shaft (6) arranged in the placement groove has a spherical structure.

5. The universal forceps for minimally invasive surgery according to claim 1, wherein: A limiting groove (31) is provided on the sleeve (9); a limiting block (32) adapted to the limiting groove (31) is fixedly connected to the inner wall of the collar (2).

6. The universal forceps for minimally invasive surgery according to claim 1, wherein: A limiting fixing column (43) is fixedly connected to the second sleeve (10); the limiting fixing column (43) is arranged between two arc-shaped plates (18).

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