Laparoscope clamp assembly

Abstract

The invention belongs to the technical field of medical instruments, and particularly relates to a laparoscope clamp assembly which comprises a clamp body, one end of the clamp body is fixedly sleeved with a handle, a pressing rod is hinged to the side, away from the clamp body, of the handle, a V-shaped elastic piece is arranged between the pressing rod and the handle, and the two sides of the elastic piece are fixedly connected with the pressing rod and the handle respectively. A fixing pipe is inserted into the end, away from the handle, of the clamp body. According to the clamp device, the ejector rod is arranged, when the deflection angle of the clamp device needs to be changed, the clamp body is rotated firstly, the ejector rod is rotated to the back face of the to-be-deflected direction of the clamp device, then the rotary knob is screwed, and therefore the ejector rod is driven by the rotary knob to be screwed in the direction close to the pressing plate; the pressing plate can drive the fixing pipe and the clamp device to deflect towards the to-be-clamped tissue with the sphere center of the spherical protrusion as the circle center under extrusion of the ejector rod, and then the clamping requirements of some complex operations are met.

Description

Technical Field

[0001] The invention belongs to the technical field of medical instruments, and in particular relates to a laparoscopic clamp assembly. Background Art

[0002] Laparoscopic clamps are a type of medical device widely used in laparoscopic surgery. They are mainly composed of a handle and a working end (clamp head). The handle is convenient for surgeons to hold and operate, and is usually designed in accordance with ergonomic principles to ensure that the surgeon has a comfortable grip during surgery and can flexibly control the movement of the clamp.

[0003] When using existing laparoscopic clamps, the clamp head is generally hinged at the end of the clamp body, and the operating space of laparoscopic surgery is relatively narrow, so the joint movement angle of the clamp head may not meet the needs of some complex surgical operations. For example, when operating in deep tissue or near important organ structures, traditional clamps may be difficult to bend to a suitable angle to accurately clamp the target tissue.

[0004] Therefore, it is necessary to invent a laparoscopic clamp assembly to solve the above problems. Summary of the invention

[0005] In view of the above problems, the present invention provides a laparoscopic clamp assembly to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a laparoscopic clamp assembly, comprising a clamp body, one end of the clamp body is fixedly sleeved with a handle, the side of the handle away from the clamp body is hinged with a pressure rod, a V-shaped spring piece is arranged between the pressure rod and the handle, the two sides of the spring piece are respectively fixedly connected to the pressure rod and the handle, the end of the clamp body away from the handle is inserted with a fixed tube, a spherical protrusion is fixedly sleeved on the fixed tube, the spherical protrusion is rotatably connected to the inner wall of the clamp body close to one end of the fixed tube, the end of the fixed tube outside the clamp body is connected with a clamp device, a traction device is arranged between the clamp device and the pressure rod, the fixed One end of the tube located in the caliper body is fixedly sleeved with an annular pressure plate, and the side of the pressure plate close to the spherical protrusion is fixedly connected to a first return spring, the first return spring is sleeved on the fixed tube, the end of the first return spring away from the pressure plate is fixedly connected to the inner wall of the caliper body close to the clamping device, and a push rod is vertically arranged on the side of the pressure plate away from the clamping device, a plurality of fixed plates are movably sleeved on the push rod, the fixed plate is fixedly connected to the inner wall of the caliper body, the end of the push rod close to the handle is threadedly sleeved with a limit plate, the limit plate is fixedly connected to the inner wall of the caliper body close to the handle, and the end of the push rod close to the handle is fixedly connected with a knob.

[0007] Furthermore, the clamp device includes a sleeve, which is fixedly sleeved on an end of the fixed tube away from the handle, and two clamp heads are symmetrically arranged inside the sleeve, and the side of the two clamp heads separated from each other can always keep in contact with the inner edge of the sleeve, and the two clamp heads are hinged together at one end of the fixed tube close to the two clamp heads through a torsion spring, and in an initial state, the two clamp heads can keep in an open state under the action of the torsion spring, and a U-shaped plate is fixedly connected between the two ends of the hinged positions of the two clamp heads, and the opening of the U-shaped plate is in the same direction as the opening of the clamp heads, and the front and rear sides of the U-shaped plate are symmetrically fixedly connected to limit blocks, and the inner walls of the front and rear sides of the sleeve are fixedly connected to horizontal guide rails, and the two limit blocks are respectively slidably installed in the two guide rails, and the side of the U-shaped plate away from the clamp heads is vertically fixedly connected to a connecting rod, and the free end of the connecting rod is fixedly connected to a connecting ball, and the connecting ball is located at the center of the spherical protrusion.

[0008] Furthermore, the pulling device includes a pull rod, which slides vertically in turn and is inserted into the center of a plurality of fixed plates. The end of the pull rod close to the pliers head is rotatably connected to the connecting ball, a pull rope is fixedly connected between the end of the pull rod close to the pressure rod and the top of the pressure rod, and a sleeve plate is fixedly sleeved on the end of the pull rod close to the connecting rod. A second return spring is fixedly connected to the side of the sleeve plate away from the fixed tube, the second return spring is sleeved on the pull rod, and the side of the second return spring away from the sleeve plate is fixedly connected to the fixed plate closest to the sleeve plate.

[0009] Furthermore, a strip-shaped positioning groove is provided on one side of the two pliers heads that are separated from each other, a positioning block is slidably installed in the positioning groove, the positioning block is fixedly connected to the inner wall of the sleeve, and rollers are installed on the opposite ends of the two positioning blocks, and the rollers can always keep in contact with the inner wall of the positioning groove.

[0010] Furthermore, a connecting tube is fixedly inserted at one end of the sleeve near the handle, and the outer wall of the connecting tube near the handle is designed as a conical surface, and the diameter of the conical surface part of the connecting tube gradually increases towards the handle, and a limiting ring is slidably sleeved on the outer side of the connecting tube, and the inner side of the limiting ring is designed as a conical surface, and the inner conical surface of the limiting ring and the outer conical surface of the connecting tube can fit together, the limiting ring is rotatably sleeved on the push rod, and the limiting ring is slidably installed in the caliper body, and a notch matching the diameter of the push rod is provided at a position at one end of the conical surface of the connecting tube that is opposite to the push rod.

[0011] Furthermore, the diameter of the pressure plate is greater than the diameter of the spherical protrusion, and there is a gap between the outer side of the pressure plate and the inner wall of the caliper body.

[0012] Furthermore, one end of the push rod close to the pressure plate is close to the edge of the pressure plate, and a ball is installed on the end of the push rod close to the pressure plate, and the ball can always keep in contact with the pressure plate.

[0013] Furthermore, anti-slip protrusions are provided on opposite sides of the two pliers heads, and the edges of the pliers heads are all rounded.

[0014] Technical effects and advantages of the present invention:

[0015] 1. The present invention is provided with a push rod. When the deflection angle of the clamp device needs to be changed, the clamp body is first rotated to rotate the push rod to the back of the clamp device in the direction to be deflected, and then the knob is turned, so that the push rod is driven by the knob to rotate in the direction close to the pressure plate. When the push rod contacts the edge of the pressure plate, as the push rod continues to rotate, the pressure plate can drive the fixed tube and the clamp device to deflect in the direction of the tissue to be clamped with the center of the spherical protrusion as the center of the circle under the pressure of the push rod, thereby meeting the clamping requirements of some complex surgeries;

[0016] 2. The present invention is provided with a positioning block and a positioning groove. When the connecting rod pulls the clamp head to move into the sleeve through the U-shaped plate or pushes the clamp head to move out of the sleeve through the U-shaped plate, the positioning block can cooperate with the positioning groove to better limit the movement state of the two clamp heads, thereby ensuring that the two clamp heads can maintain the same opening amplitude and ensuring the stability of the clamp heads during movement, thereby improving the accuracy of the clamp heads in clamping the target tissue;

[0017] 3. The present invention is provided with a connecting tube and a limiting ring. When the pliers head is not required to be able to deflect, as the knob is turned to drive the push rod to separate from the pressure plate, the limiting ring can also gradually move in the direction close to the conical surface of the connecting tube, and when the inner side of the limiting ring is completely in contact with the conical surface of the connecting tube, the limiting ring can limit the connecting tube through the inclined surface on its inner side, thereby ensuring that the pliers head will not deflect at will under the limiting effect of the limiting ring on the connecting tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 It is a cross-sectional view of the overall structure of the present invention;

[0020] Figure 3 The present invention Figure 2 A magnified view of part A;

[0021] Figure 4 The present invention Figure 2 A magnified view of part B;

[0022] Figure 5 It is a partial three-dimensional structural cross-sectional view of the pliers body of the present invention;

[0023] Figure 6It is a three-dimensional schematic diagram of structures such as a fixed tube, a spherical protrusion, a sleeve and a positioning block in the present invention;

[0024] Figure 7 It is a three-dimensional schematic diagram of a part of the clamping device in the present invention.

[0025] In the figure: 1. pliers body; 2. handle; 3. pressure rod; 4. spring; 5. fixing tube; 6. spherical protrusion; 7. clamping device; 71. sleeve; 72. pliers head; 73. U-shaped plate; 74. limit block; 75. guide rail; 76. connecting rod; 77. connecting ball; 8. pulling device; 81. pull rod; 82. pull rope; 83. sleeve plate; 84. second return spring; 9. pressure plate; 10. first return spring; 11. push rod; 12. fixing plate; 13. limit plate; 14. knob; 15. positioning block; 16. roller; 17. connecting tube; 18. limit ring; 19. ball. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0027] The present invention provides Figures 1 to 7 A laparoscopic clamp assembly shown in the figure comprises a clamp body 1, one end of the clamp body 1 is fixedly sleeved with a handle 2, the side of the handle 2 away from the clamp body 1 is hinged with a pressure rod 3, a V-shaped spring sheet 4 is arranged between the pressure rod 3 and the handle 2, and the two sides of the spring sheet 4 are respectively fixedly connected to the pressure rod 3 and the handle 2, a fixed tube 5 is inserted into the end of the clamp body 1 away from the handle 2, a spherical protrusion 6 is fixedly sleeved on the fixed tube 5, and the spherical protrusion 6 is rotatably connected to the inner wall of the clamp body 1 near the end of the fixed tube 5, a clamp device 7 is connected to the end of the fixed tube 5 located outside the clamp body 1, a pulling device 8 is arranged between the clamp device 7 and the pressure rod 3, and an annular pressure plate 9 is fixedly sleeved on the end of the fixed tube 5 located inside the clamp body 1, and the pressure plate 9 is close to the spherical protrusion 6. A first return spring 10 is fixedly connected to one side of the clamp 5, and the first return spring 10 is sleeved on the fixed tube 5. The end of the first return spring 10 away from the pressure plate 9 is fixedly connected to the inner wall of the pliers body 1 near the clamping device 7. A push rod 11 is vertically arranged on the side of the pressure plate 9 away from the clamping device 7. A plurality of fixed plates 12 are movably sleeved on the push rod 11, and the fixed plate 12 is fixedly connected to the inner wall of the pliers body 1. A limit plate 13 is threadedly sleeved on one end of the push rod 11 near the handle 2, and the limit plate 13 is fixedly connected to the inner wall of the pliers body 1 near the handle 2. A knob 14 is fixedly connected to the end of the push rod 11 near the handle 2. The diameter of the pressure plate 9 is larger than the diameter of the spherical protrusion 6, and there is a gap between the outer side of the pressure plate 9 and the inner wall of the pliers body 1.

[0028] When in use, when it is necessary to change the deflection angle of the clamp device 7, first rotate the clamp body 1 to rotate the push rod 11 to the back of the clamp device 7 to be deflected, and then turn the knob 14, so that the push rod 11 is driven by the knob 14 to rotate in the direction close to the pressure plate 9. When the push rod 11 contacts the edge of the pressure plate 9, as the push rod 11 continues to rotate, the pressure plate 9 can drive the fixed tube 5 and the clamp device 7 to deflect in the direction of the tissue to be clamped with the center of the spherical protrusion 6 as the center of the circle under the pressure of the push rod 11, thereby meeting the clamping requirements of some complex surgeries. During the deflection of the fixed tube 5, the first return spring 10 can be adaptively twisted under the pressure of the pressure plate 9;

[0029] After the above-mentioned clamping operation is completed, as the knob 14 is turned to drive the push rod 11 to gradually separate from the pressure plate 9, the fixed tube 5 can gradually restore its original state and remain coaxial with the clamp body 1 under the supporting force of the first return spring 10 on the pressure plate 9, thereby meeting the general clamping requirements of the clamp device 7.

[0030] like Figures 2 to 7 As shown, the clamp device 7 includes a sleeve 71, and the sleeve 71 is fixedly sleeved on the end of the fixed tube 5 away from the handle 2. Two clamp heads 72 are symmetrically arranged inside the sleeve 71, and the separated sides of the two clamp heads 72 can always keep in contact with the inner edge of the sleeve 71. The ends of the two clamp heads 72 close to the fixed tube 5 are hinged together by a torsion spring, and in the initial state, the two clamp heads 72 can keep in an open state under the action of the torsion spring, and a U-shaped plate 73 is fixedly connected between the two ends of the hinged position of the two clamp heads 72, and the opening of the U-shaped plate 73 is connected to the The opening directions of the pliers heads 72 are the same. The front and rear sides of the U-shaped plate 73 are symmetrically fixedly connected to the limit blocks 74. The inner walls of the front and rear sides of the sleeve 71 are fixedly connected with horizontal guide rails 75, and the two limit blocks 74 are slidably installed in the two guide rails 75 respectively. The side of the U-shaped plate 73 away from the pliers head 72 is vertically fixedly connected with a connecting rod 76. The free end of the connecting rod 76 is fixedly connected with a connecting ball 77, and the connecting ball 77 is located at the center of the spherical protrusion 6. The opposite sides of the two pliers heads 72 are provided with anti-slip protrusions, and the edges of the pliers heads 72 are all rounded.

[0031] The pulling device 8 includes a pull rod 81, which slides vertically in sequence and penetrates and is inserted at the center of a plurality of fixed plates 12. The end of the pull rod 81 close to the clamp head 72 is rotatably connected to the connecting ball 77. A pull rope 82 is fixedly connected between the end of the pull rod 81 close to the pressure rod 3 and the top of the pressure rod 3. The end of the pull rod 81 close to the connecting rod 76 is fixedly sleeved with a sleeve plate 83. The sleeve plate 83 is fixedly connected to the side away from the fixed tube 5 with a second return spring 84. The second return spring 84 is sleeved on the pull rod 81, and the side of the second return spring 84 away from the sleeve plate 83 is fixedly connected to the fixed plate 12 closest to the sleeve plate 83.

[0032] When the pressing plate 9 is pushed by the push rod 11 to drive the fixed tube 5 to deflect, the sleeve 71 can drive the two clamp heads 72 to deflect in the direction of the tissue to be clamped by the force of its edge position on the clamp heads 72, and in this process, the connecting rod 76 can deflect with the sleeve 71 with the connecting ball 77 as the center of the circle, and when the clamp heads 72 complete the deflection operation, as the pressure rod 3 is squeezed by the hand, the spring piece 4 can be compressed, and at this time, the top end of the pressed pressure rod 3 can pull the pull rod 81 through the pull rope 82, and as the pull rod 81 is pulled, the pull rod 81 The sleeve plate 83 on the upper part can compress the second return spring 84. At the same time, as the pull rod 81 is pulled, the pull rod 81 can pull the U-shaped plate 73 through the connecting rod 76, so that the two clamp heads 72 can drive the limit block 74 to move along the direction of the guide rail 75 under the pulling of the U-shaped plate 73. As the clamp heads 72 are pulled by the U-shaped plate 73, the two clamp heads 72 can move synchronously into the sleeve 71, and the separated sides of the two clamp heads 72 can be gradually merged together under the pressure of the edge of the sleeve 71, thereby realizing the clamping operation of the tissue to be clamped;

[0033] When the clamping is completed, as the pressure rod 3 is released, the spring 4 can push the pressure rod 3 to reset. At the same time, the second reset spring 84 can also assist the pull rod 81 to quickly reset by pushing the sleeve plate 83. As the pull rod 81 is reset, the pull rod 81 can push the U-shaped plate 73 through the connecting rod 76, thereby driving the two clamp heads 72 to move out of the sleeve 71. As the two clamp heads 72 gradually move out of the sleeve 71, the two clamp heads 72 can reopen under the action of the torsion spring, thereby preparing for the next clamping operation.

[0034] like Figures 5 to 7 As shown, a strip-shaped positioning groove is provided on one side of the two pliers heads 72 that are separated from each other, a positioning block 15 is slidably installed in the positioning groove, the positioning block 15 is fixedly connected to the inner wall of the sleeve 71, and a roller 16 is installed on the opposite end of the two positioning blocks 15, and the roller 16 can always keep in contact with the inner wall of the positioning groove;

[0035] By providing the positioning block 15 and the positioning groove, when the connecting rod 76 pulls the clamp head 72 to move into the sleeve 71 through the U-shaped plate 73 or the connecting rod 76 pushes the clamp head 72 to move out of the sleeve 71 through the U-shaped plate 73, the positioning block 15 can cooperate with the positioning groove to better limit the movement state of the two clamp heads 72, thereby ensuring that the two clamp heads 72 can maintain the same opening amplitude and ensure the stability of the clamp heads 72 during the movement, thereby improving the accuracy of the clamp heads 72 in clamping the target tissue;

[0036] When the positioning block 15 moves along the positioning groove, the roller 16 can reduce the friction during the movement of the positioning block 15, thereby making the opening and closing actions of the two clamp heads 72 smoother.

[0037] like Figures 2 to 5 As shown, the end of the sleeve 71 close to the handle 2 is fixedly plugged with a connecting tube 17, the outer wall of the connecting tube 17 close to the handle 2 is designed as a conical surface, and the diameter of the conical surface part of the connecting tube 17 gradually increases in the direction close to the handle 2, the outer side of the connecting tube 17 is slidably sleeved with a limiting ring 18, the inner side of the limiting ring 18 is designed as a conical surface, and the inner conical surface of the limiting ring 18 and the outer conical surface of the connecting tube 17 can fit together, the limiting ring 18 is rotatably sleeved on the mandrel 11, and the limiting ring 18 is slidably installed in the pliers body 1, and a notch matching the diameter of the mandrel 11 is provided at a position where one end of the conical surface of the connecting tube 17 is directly opposite to the mandrel 11;

[0038] By providing the connecting tube 17 and the limiting ring 18, when the pliers head 72 is not required to be able to deflect, as the knob 14 is turned to drive the push rod 11 to separate from the pressing plate 9, the limiting ring 18 can also gradually move in the direction close to the conical surface of the connecting tube 17, and after the inner side of the limiting ring 18 is completely in close contact with the conical surface of the connecting tube 17, the limiting ring 18 can limit the connecting tube 17 through the inner inclined surface, so that the fixing tube 5 can ensure that the pliers head 72 will not deflect at will under the limiting effect of the limiting ring 18 on the connecting tube 17;

[0039] When the clamp head 72 needs to be able to deflect an angle, as the push rod 11 drives the limit ring 18 to move toward the clamp head 72, the limit ring 18 gradually releases the restriction on the connecting tube 17. When the push rod 11 pushes the pressure plate 9 to drive the fixed tube 5 and the connecting tube 17 to deflect together, the notch on the side of the connecting tube 17 opposite to the push rod 11 will not hinder the deflection of the connecting tube 17, thereby ensuring that the clamp head 72 can smoothly deflect an angle.

[0040] like Figure 5 and Figure 7As shown, the end of the push rod 11 close to the pressing plate 9 is close to the edge of the pressing plate 9, and the end of the push rod 11 close to the pressing plate 9 is installed with a ball 19, and the ball 19 can always keep in contact with the pressing plate 9;

[0041] By providing the ball bearings 19 , when the push rod 11 presses the pressure plate 9 to tilt, the ball bearings 19 can reduce the friction force when the push rod 11 slides along the surface of the pressure plate 9 , thereby enabling the fixing tube 5 to drive the clamp head 72 to deflect more smoothly.

[0042] The above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them.

Claims

1. A laparoscopic clamp assembly, comprising a clamp body (1), characterized in that: One end of the pliers body (1) is fixedly sleeved with a handle (2), and a pressure rod (3) is hingedly connected to the side of the handle (2) away from the pliers body (1). A V-shaped spring sheet (4) is arranged between the pressure rod (3) and the handle (2), and the two sides of the spring sheet (4) are respectively fixedly connected to the pressure rod (3) and the handle (2). The end of the pliers body (1) away from the handle (2) is inserted with a fixed tube (5), and a spherical protrusion (6) is fixedly sleeved on the fixed tube (5), and the spherical protrusion (6) is rotatably connected to the inner wall of the pliers body (1) near the end of the fixed tube (5). The end of the fixed tube (5) located outside the pliers body (1) is connected to a clamping device (7), and a pulling device (8) is arranged between the clamping device (7) and the pressure rod (3). The end of the fixed tube (5) located inside the pliers body (1) is fixedly sleeved with an annular pressure plate (9). A first return spring (10) is fixedly connected to one side of the pressure plate (9) close to the spherical protrusion (6), and the first return spring (10) is sleeved on the fixed tube (5). One end of the first return spring (10) away from the pressure plate (9) is fixedly connected to the inner wall of the pliers body (1) close to the clamping device (7). A push rod (11) is vertically arranged on the side of the pressure plate (9) away from the clamping device (7). A plurality of fixed plates (12) are movably sleeved on the push rod (11), and the fixed plates (12) are fixedly connected to the inner wall of the pliers body (1). One end of the push rod (11) close to the handle (2) is threadedly sleeved with a limit plate (13), and the limit plate (13) is fixedly connected to the inner wall of the pliers body (1) close to the handle (2). The end of the push rod (11) close to the handle (2) is fixedly connected to a knob (14).

2. A laparoscopic clamp assembly according to claim 1, characterized in that: The clamp device (7) comprises a sleeve (71), the sleeve (71) being fixedly sleeved on an end of the fixed tube (5) away from the handle (2), two clamp heads (72) being symmetrically arranged inside the sleeve (71), and the separated sides of the two clamp heads (72) can always keep in contact with the inner edge of the sleeve (71), the two ends of the two clamp heads (72) close to the fixed tube (5) are hinged together by a torsion spring, and in an initial state, the two clamp heads (72) can keep in an open state under the action of the torsion spring, and a U-shaped spring is fixedly connected between the two ends of the hinged position of the two clamp heads (72). The U-shaped plate (73) is provided with a U-shaped plate (73), and the opening of the U-shaped plate (73) is in the same direction as the opening of the clamp head (72); the front and rear sides of the U-shaped plate (73) are symmetrically fixedly connected to the limit blocks (74); the inner walls of the front and rear sides of the sleeve (71) are fixedly connected to horizontal guide rails (75), and the two limit blocks (74) are respectively slidably installed in the two guide rails (75); the side of the U-shaped plate (73) away from the clamp head (72) is vertically fixedly connected to a connecting rod (76); the free end of the connecting rod (76) is fixedly connected to a connecting ball (77), and the connecting ball (77) is located at the center of the spherical protrusion (6).

3. A laparoscopic clamp assembly according to claim 2, characterized in that: The pulling device (8) comprises a pulling rod (81), and the pulling rod (81) slides vertically in sequence and penetrates and is inserted at the center of a plurality of fixed plates (12). The end of the pulling rod (81) close to the clamp head (72) is rotatably connected to the connecting ball (77). A pulling rope (82) is fixedly connected between the end of the pulling rod (81) close to the pressure rod (3) and the top of the pressure rod (3). The end of the pulling rod (81) close to the connecting rod (76) is fixedly sleeved with a sleeve plate (83). The side of the sleeve plate (83) away from the fixed tube (5) is fixedly connected with a second return spring (84). The second return spring (84) is sleeved on the pulling rod (81), and the side of the second return spring (84) away from the sleeve plate (83) is fixedly connected to the fixed plate (12) closest to the sleeve plate (83).

4. A laparoscopic clamp assembly according to claim 3, characterized in that: A strip-shaped positioning groove is provided on the separated side of the two clamp heads (72), a positioning block (15) is slidably installed in the positioning groove, the positioning block (15) is fixedly connected to the inner wall of the sleeve (71), and a roller (16) is installed on the opposite end of the two positioning blocks (15), and the roller (16) can always keep in contact with the inner wall of the positioning groove.

5. A laparoscopic clamp assembly according to claim 4, characterized in that: A connecting tube (17) is fixedly inserted at one end of the sleeve (71) close to the handle (2); the outer wall of the connecting tube (17) close to the handle (2) is designed as a conical surface, and the diameter of the conical surface portion of the connecting tube (17) gradually increases in the direction close to the handle (2); a limiting ring (18) is slidably sleeved on the outer side of the connecting tube (17); the inner side of the limiting ring (18) is designed as a conical surface, and the inner conical surface of the limiting ring (18) and the outer conical surface of the connecting tube (17) can fit together; the limiting ring (18) is rotatably sleeved on the push rod (11), and the limiting ring (18) is slidably installed in the pliers body (1); a notch matching the diameter of the push rod (11) is provided at a position where one end of the conical surface of the connecting tube (17) faces the push rod (11).

6. A laparoscopic clamp assembly according to claim 5, characterized in that: The diameter of the pressing plate (9) is greater than the diameter of the spherical protrusion (6), and a gap exists between the outer side of the pressing plate (9) and the inner wall of the pliers body (1).

7. A laparoscopic clamp assembly according to claim 6, characterized in that: One end of the push rod (11) close to the pressing plate (9) is close to the edge of the pressing plate (9), and a ball (19) is installed on the end of the push rod (11) close to the pressing plate (9), and the ball (19) can always maintain contact with the pressing plate (9).

8. A laparoscopic clamp assembly according to claim 4, characterized in that: The two opposite sides of the two pliers heads (72) are both provided with anti-slip protrusions, and the edges of the pliers heads (72) are both rounded.

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