Installation and positioning device for medical clamping instrument

Abstract

The present invention discloses an installation and positioning device for a medical clamping instrument, which includes a base, a clamp head positioning seat, a support seat, a fixed seat positioning block, a pull rod fixing block and an elastic tensioning mechanism; the clamp head positioning seat is slidably arranged on the base, and the clamp head positioning seat is provided with a positioning protrusion for inserting into the gap of the clamp head; the elastic tensioning mechanism is used to apply elastic force to the clamp head positioning seat; the fixed seat positioning block is provided with a positioning boss for axially positioning the fixed seat; the support seat is provided with a limit block for supporting and limiting the metal pipe; the pull rod fixing block is detachably arranged on the fixed seat positioning block or the base, and the pull rod fixing block is used to clamp the end of the pull rod away from the clamp head. The present invention achieves accurate positioning by positioning the clamp rod on the clamp head fixed seat, the support seat and the fixed seat positioning block, and tensioning the entire clamp rod with a quick clamp, so as to accurately ensure the position of the fixed seat on the clamp rod, thereby improving the performance, safety and effectiveness of the product.

Description

Technical Field

[0001] The invention relates to an installation and positioning device for a medical clamping device, belonging to the technical field of medical devices. Background Art

[0002] Laparoscopic minimally invasive surgery is widely used in many surgical fields due to its advantages of minimally invasive surgery, minimal pain, and rapid postoperative recovery. It primarily involves inserting a laparoscope, equipped with a video camera and light source, through a tiny incision in the abdominal wall. The surgeon observes the images transmitted to a monitor and can clearly perform the procedure using minimally invasive surgical instruments outside the abdominal cavity. This allows the patient to avoid the trauma of open surgery and minimize pain. Needle holders are commonly used in laparoscopic minimally invasive surgery. During the procedure, needle holders are typically used to hold suture needles for suturing tissues and tying sutures.

[0003] In the prior art, needle holders are mainly composed of a handle for the hand-held part and a clamp rod for the clamping part (such as the prior art with publication number CN212547043U). Figure 1 、 Figure 2 As shown, the pliers rod is an important component of the needle holder and primarily comprises a pliers head 11, a pull rod 13, a metal tube 12, and a fixing base 8. The metal tube 12 is sleeved onto the pull rod 13, the end of which extends through the fixing base 8. The pliers head 11, similar to a pair of scissors, is threadedly connected to the pull rod 13 and welded to the metal tube 12. When the pull rod 13 and the metal tube 12 generate axial relative movement, the pliers head 11 is opened or closed. Prior to assembly, the pliers head 11 and the metal tube 12, as well as the metal tube 12 and the fixing base 8, are both clearance fits. The pliers head 11 and the metal tube 12 are then directly welded to the fixing base 8 via laser welding. Once welded, the fixing base 8 cannot be disassembled. Typically, the fixing base 8 is fixed to the handle (not shown). The operator pulls the trigger on the handle to cause the pull rod 13 to move axially, thereby opening and closing the pliers head 11. If the relative positions of the fixing base 8 and the metal tube 12, as well as the relative positions of the fixing base 8 and the pull rod 13, are not accurately positioned during the welding assembly process, it will directly affect the overall performance of the needle holder and may even cause the entire clamp rod to be scrapped. If the distance between the fixing base 8 and the clamp head 11 is too short, the needle holder will easily drop the suture needle or suture thread when clamping it, and the required clamping force will not be achieved, which will directly affect the quality of the surgery and increase the risk of the surgery. If the distance between the fixing base 8 and the clamp head 11 is too long, the clamp rod will not fit into the handle or the clamping force will be too large, which will easily deform the suture needle. In addition, long-term use will easily aggravate hand fatigue and make mistakes during the surgical suturing process.

[0004] Before the fixing seat 8 is fixedly welded to the metal tube 12, the clamp head 11 has generally completed the fixed connection with the pull rod 13 and the metal tube 12. At this time, the pull rod 13 and the metal tube 12 need to be fixed and positioned at the same time, and the clamp head 11 must also be in the closed limit state or the expanded limit state. Only in this way can the fixing seat 8 be accurately welded and fixed to the metal tube 12 to avoid the above-mentioned assembly problems. However, the relevant installation and positioning device is not disclosed in the prior art.

[0005] Similar assembly positioning problems are not limited to needle holders; other medical clamping instruments (such as ultrasonic scalpels, clamps, etc.) also have the same problem. Summary of the Invention

[0006] The present invention provides an installation and positioning device for a medical clamping device, which can simultaneously accurately position the relative positions of a fixing seat, a metal tube, and a pull rod, thereby improving the assembly accuracy of the clamping medical device. The specific technical solution is as follows.

[0007] A mounting and positioning device for a medical clamping device, comprising a clamp head, a pull rod, a metal tube, and a fixing seat, wherein the clamp head is fixedly connected to one end of the pull rod and the metal tube, and the fixing seat is sleeved on the other end of the metal tube; the mounting and positioning device is characterized in that it comprises a base, a clamp head positioning seat, a support seat, a fixing seat positioning block, a pull rod fixing block, and an elastic tensioning mechanism;

[0008] The pliers head positioning seat is slidably arranged on the base, and a positioning protrusion for inserting into the gap of the pliers head is provided on the pliers head positioning seat; the elastic tensioning mechanism is arranged on the base and is used to apply elastic force to the pliers head positioning seat;

[0009] The fixing seat positioning block is fixedly arranged on the base, and the fixing seat positioning block is provided with a positioning boss for axially positioning the fixing seat;

[0010] The support seat is fixedly arranged on the base, and a limiting block for clamping and limiting the metal pipe is provided on the support seat;

[0011] The pull rod fixing block is detachably arranged on the fixing seat positioning block or the base, and the pull rod fixing block is used to clamp the end of the pull rod away from the pliers head.

[0012] The above technical solution can realize the precise positioning of the relative position between the fixed seat and the pull rod, and ensure the precise positioning of the relative position between the fixed seat and the metal tube. The principle of precise positioning is as follows: the pliers head is fixedly connected to the pull rod and the metal tube at the same time and then placed on the pliers head positioning seat. The positioning protrusion of the pliers head positioning seat is inserted into the gap of the pliers head to realize the positioning of the pliers head. The end of the pull rod away from the pliers head is clamped and positioned by the pull rod fixing block. The metal tube is clamped by the support seat, but the metal tube can slide axially relative to the support seat under the elastic force of the elastic tensioning mechanism. When the elastic tensioning mechanism applies elastic force to the pliers head positioning seat, the pliers head positioning seat will slide relative to the base to a certain extent. The positioning protrusion of the pliers head positioning seat pulls the pliers head. Since the end of the pull rod is clamped by the pull rod fixing block, the pull rod and the metal tube are in a stable state. The metal tubes are all in a tensioned state (the positioning protrusions and the pull rod fixing block tighten the pliers head and the pull rod from two opposite directions, and the pliers head and the metal tube are fixedly connected by laser welding, so that the metal tube is also in a tensioned state, and the hinge pin of the pliers head and the pull rod fixing block tighten the pull rod from two opposite directions). The pliers head is in a clamped and closed state, which is an extreme state of the relative position of the pull rod and the metal tube. At this time, the fixed seat mounted on the metal tube is slid to the positioning protrusion of the fixed seat positioning block, thereby achieving precise positioning of the fixed seat relative to the pull rod and the metal tube. The fixed seat is welded and fixed to the metal tube by laser welding. Among them, the relative position of the positioning protrusion of the fixed seat positioning block and the pull rod fixing block is pre-set according to the size and structure of the handle. Axial refers to the axial direction of the pull rod or metal tube.

[0013] Furthermore, the elastic tensioning mechanism includes a tension spring and a quick clamp. One end of the tension spring is connected to the clamp head positioning seat, and the other end is connected to the push-pull rod of the quick clamp. The quick clamp can be a quick clamp from the prior art (publication number CN208744627U), which facilitates rapid tensioning of the tension spring. After the tension spring is tightened, the quick clamp remains in a self-locking state and will not easily move.

[0014] Furthermore, a positioning block is detachably provided in the clamp head positioning seat, and the positioning protrusion is fixedly provided on the positioning block. When it is necessary to position clamp heads of different specifications, different positioning blocks can be replaced to adapt to the gap of the corresponding clamp heads.

[0015] Furthermore, the base is provided with a slide groove extending along a straight line, and the bottoms of the clamp head positioning seat, support seat, and fixed seat positioning block are all provided with guide protrusions matching the slide groove; preferably, the base is provided with a first strip groove corresponding to the clamp head positioning seat, the extension direction of the first strip groove is parallel to the extension direction of the slide groove, and the clamp head positioning seat is fixedly connected with a screw, and the screw passes through the first strip groove. By providing the slide groove, it is ensured that the clamp head positioning seat, support seat, and fixed seat positioning block are located on the same straight line; by providing the first strip groove, it is convenient to achieve a sliding connection between the clamp head positioning seat and the base, and the screw on the clamp head positioning seat can prevent the clamp head positioning seat from falling off the base during the sliding process. The support seat and fixed seat positioning block are both detachably fixed to the base by fasteners, and the base can also be provided with a first strip groove corresponding to the support seat and fixed seat positioning block, so as to facilitate fine-tuning the position of the support seat and fixed seat positioning block to adapt to the positioning and installation of medical clamping instruments of different specifications.

[0016] Furthermore, the limit block has a groove adapted to the outer diameter of the metal tube, and the groove is interference fit with the metal tube. The limit block is an elastic component; preferably, it is made of materials such as polyurethane, rubber, and silicone. The groove of the limit block is interference fit with the metal tube. On the one hand, when the elastic tensioning mechanism pulls the metal tube to move, the limit block will not scratch the metal tube; on the other hand, the elastic limit block applies a moderate clamping force to the metal tube and will not crush or damage the metal tube; the limit block also has the function of aligning the metal tube and the pull rod coaxially. Preferably, the support seat is located between the clamp head positioning seat and the fixed seat positioning block. In this way, the support seat can limit and support the middle part of the metal tube.

[0017] Furthermore, the end of the tie rod facing away from the clamp head has a ball head, and the tie rod fixing block has a ball head clamping groove for accommodating the ball head, the ball head clamping groove being used to clamp the ball head in the axial direction. The tie rod fixing block is also provided with a second strip groove, and the tie rod fixing block is fixed to the base or the fixed seat positioning block via a fastening bolt. The provision of the ball head clamping groove enables quick installation and removal of the tie rod and tie rod fixing block. The provision of the second strip groove facilitates adjustment of the position of the tie rod fixing block so that the spacing between the tie rod fixing block and the positioning boss meets predetermined requirements.

[0018] The beneficial effects of the present invention are as follows: the elastic tensioning mechanism keeps the pliers head, pull rod, and metal tube in a tensioned, non-loose state, and the pliers head in a tightly closed state, thereby accurately securing the fixing seat to a predetermined position, achieving precise positioning of the fixing seat relative to the pull rod and metal tube, and improving the performance, safety, and effectiveness of the medical clamping device. Since the pliers head, pull rod, and metal tube are simultaneously tensioned, manufacturing errors in the pliers head itself (such as dimensional differences between the hinge pin and the perforation, which can easily cause slight shaking) can also be eliminated or reduced during the assembly of the fixing seat. Furthermore, the invented mounting and positioning device cleverly utilizes the gap in the pliers head to position the pliers head, eliminating the need to apply a large clamping force to the metal tube, thereby enabling safe and damage-free positioning and assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is an exploded schematic diagram of the clamp rod;

[0020] Figure 2 This is a schematic diagram of the clamp rod after assembly;

[0021] Figure 3 is a schematic diagram of the installation and positioning device of the present invention;

[0022] Figure 4 It is a top-down perspective schematic diagram of the clamp head positioning seat;

[0023] Figure 5 It is a three-dimensional schematic diagram of the clamp head positioning seat when viewed from above;

[0024] Figure 6 It is a three-dimensional schematic diagram of the positioning block;

[0025] Figure 7 It is a top-down perspective schematic diagram of the support base;

[0026] Figure 8 It is a bottom-up perspective diagram of the support base;

[0027] Figure 9 It is a three-dimensional schematic diagram of the limit block;

[0028] Figure 10 It is a schematic diagram of the fixed seat positioning block;

[0029] Figure 11 is a schematic diagram of the tie rod fixing block;

[0030] Figure 12 It is a schematic diagram of the quick clamp;

[0031] Figure 13 It is a top-down perspective diagram of the base;

[0032] Figure 14 It is a schematic diagram of the base when viewed from above;

[0033] Figure 15 It is a schematic diagram of the positioning clamp rod of the installation and positioning device of the present invention;

[0034] Figure 16 This is a schematic diagram of the positioning protrusion inserted into the gap of the pliers head.

[0035] In the figure: 1. Clamp head positioning seat; 2. Support seat; 3. Fixed seat positioning block; 4. Quick clamp; 5. Base; 6. Pull rod fixing block; 7. Positioning boss; 8. Fixed seat; 9. Limit block; 10. Rotating handle; 11. Clamp head; 12. Metal pipe; 13. Pull rod; 14. Tension spring; 15. Tension spring mounting screw; 16. Positioning boss; 17. Elastic pad; 18. First threaded hole; 19. Second threaded hole; 20. Positioning block; 21. Hanging part; 22. Guide boss; 23. Third threaded hole; 24. First through hole; 25. Push-pull rod; 26. Slide groove; 27. Step hole; 28. First strip groove; 29. Bottom surface; 30. Groove; 31. Ball head clamping groove; 32. Second strip groove; 33. Fastening screw; 34. Second through hole; 11.1. Hinge pin; 13.1. Ball head. DETAILED DESCRIPTION

[0036] The present invention is further described in detail below with reference to the accompanying drawings.

[0037] See also Figures 1-16 The needle holder comprises a handle (not shown) for the handheld portion and a clamping rod for the clamping portion. The clamp rod primarily comprises a clamp head 11, a pull rod 13, a metal tube 12, and a fixing base 8. The clamp head 11 is fixedly connected to the pull rod 13 and one end of the metal tube 12, while the fixing base 8 is sleeved over the other end of the metal tube 12. The end of the pull rod 12 extends through the fixing base 8. The clamp head 11, similar to a pair of scissors, is threadedly fixed to the pull rod 13 and welded to the metal tube 12. When the pull rod 13 and the metal tube 12 generate axial relative movement, the clamp head 11 is opened or closed. The clamp head 11 has a hinge pin. The middle portion of the clamp arm, which is hinged to the pull rod 13, is hinged to the hinge pin. A gap (not shown) is provided below the hinge pin.

[0038] The installation and positioning device includes a pliers head positioning seat 1, a support seat 2, a fixed seat positioning block 3, a quick clamp 4, and a base 5. The support seat 2, the fixed seat positioning block 3 and the quick clamp 4 are fixed to the corresponding positions of the base 5 by fasteners, and the pliers head positioning seat 1 is slidably set on the base 5.

[0039] like Figure 3-Figure 6As shown, the pliers head positioning seat 1 has a first threaded hole 18, and the base 5 is provided with a first strip groove 28 corresponding to the first threaded hole 18. The extension direction of the first strip groove 28 is parallel to the extension direction of the slide groove 26 of the base 5. The pliers head positioning seat 1 is fixedly connected to the pliers head positioning seat 1 with a screw (not shown), which passes through the first strip groove. This ensures that the pliers head positioning seat 1 is slidably set on the base 5, so that the pliers head positioning seat 1 can move back and forth within a certain distance range, allowing the tension spring 14 to tighten the pliers head positioning seat 1. The pliers head positioning seat 1 also has a second threaded hole 19, and one end of the tension spring 14 on the quick clamp 4 can be fixed to the pliers head positioning seat 1 through a corresponding fastener. The pliers head positioning seat 1 is a movable clearance fit relative to the base 5, and the fit clearance is 0.05mm-0.2mm.

[0040] A removable positioning block 20 is installed within the pliers head positioning seat 1 (the positioning block 20 is inserted into the pliers head positioning seat 1), and a positioning protrusion 16 is fixed to the positioning block 20. When different pliers heads 11 need to be positioned, different positioning blocks 20 can be replaced to accommodate the gaps in the corresponding pliers heads 20. The pliers head positioning seat 1 and the positioning block 20 have a clearance fit of 0.01-0.04mm. The positioning block 20 has an outwardly protruding hook portion 21. The positioning block 20 is embedded in the pliers head positioning seat 1. The hook portion 21 hooks onto the bottom surface 29 of the pliers head positioning seat 1 and is then removably fixed to the base 5 together with the pliers head positioning seat 1. The positioning block 20 is inserted into the gap in the pliers head 11 by the positioning protrusion 16 provided on it, thereby positioning the pliers head 11. The shape and number of the positioning protrusions 16 can be adjusted according to the pliers head 11. Those skilled in the art will appreciate that the positioning block 20 can also be integrally formed with the pliers head positioning seat 1.

[0041] like Figure 3 、 Figure 7-Figure 8 As shown, the support seat 2 and the limit block 9 are installed through interference fit, and the fitting clearance is 0.01-0.1mm. The limit block 9 has a groove 30 that adapts to the outer diameter of the metal tube 12. The groove 30 is interference fit with the metal tube 12. The limit block 9 wraps the metal tube 12 through the groove 30, which can prevent the metal tube 12 from being scratched and can also prevent the metal tube 12 from moving at will. The material of the limit block 9 is soft rubber, preferably polyurethane, rubber, silicone and other materials. The support seat 2 is fixed to the base 5 through the third threaded hole 23. An elastic pad 17 is provided on the pliers head positioning seat 1, and the elastic pad 17 can contain the pliers head 11 to prevent the pliers head 11 from shaking.

[0042] like Figure 3 、 Figure 10-11As shown, the fixed seat positioning block 3 has a positioning boss 7 and a removable tie rod fixing block 6. The end of the tie rod 13 facing away from the clamp head 11 has a ball head 13.1. The tie rod fixing block 6 has a ball head clamping groove 31 for accommodating the ball head 13.1. The ball head clamping groove 31 is used to clamp the ball head 13.1 in the axial direction. The tie rod fixing block 6 is also provided with a second strip groove 32. The tie rod fixing block 6 is fixed to the fixed seat positioning block 3 by a fastening bolt 33. The provision of the ball head clamping groove 31 enables quick installation and removal of the tie rod 13 and the tie rod fixing block 6. The provision of the second strip groove 32 facilitates adjustment of the position of the tie rod fixing block 6 so that the spacing between the tie rod fixing block 6 and the positioning boss 7 meets the predetermined requirements. It should be noted that the pull rod fixing block 6 can also be detachably set on the base 5; in addition, if the end of the pull rod 13 facing away from the pliers head 11 is not a ball head but other structures, the structure of the pull rod fixing block 6 can be adjusted as long as the pull rod fixing block 6 can fix the end of the pull rod 13.

[0043] The fixing seat positioning block 3 has a first through hole 24, and the fixing seat positioning block 3 is fixed to the base 5 by a fastener. The first through hole 24 has a certain length and is used to movably adjust the position of the fixing seat positioning block 3 on the base 5 according to the length of the metal tube 12.

[0044] like Figure 12 As shown, the quick clamp 4 is fixed to the base 5 by engaging a fastener such as a screw through the second through hole 34 thereon. The quick clamp 4 and the pliers head positioning seat 1 are detachably connected to the tension spring 14 via the tension spring mounting screw 15. The quick clamp 4 has a self-locking function. When the rotating handle 10 on the quick clamp 4 is rotated counterclockwise, the rotating handle 10 drives the push-pull rod 25 to move toward the rotating handle 10, and the push-pull rod 25 drives the tension spring 14 into a stretched state. When the rotating handle 10 is rotated counterclockwise to the maximum position, the tension spring 14 is in a maximum tension state, thereby driving the pliers head positioning seat 1 to tighten the pull rod 13 and the metal tube 12. When the tension spring 14 is in a maximum tension state, the rotating handle 10 on the quick clamp 4 will not be pulled back to the initial position by the tension of the tension spring 1, but will self-lock in the maximum tension state, thereby ensuring that the entire pliers rod is always in a tensioned state and will not be inaccurately positioned due to loosening. It should be noted that although the quick clamp 4 and the tension spring 14 are used here to apply the tensioning elastic force, those skilled in the art will understand that other forms of elastic tensioning mechanisms can also be used, for example, the quick clamp 4 can be replaced with a screw, and the screw can cooperate with different screw holes on the base 5 to adjust the elastic force of the tension spring 14.

[0045] like Figure 13-14As shown, the base 5 has a first strip-shaped groove 28 of a predetermined length, which is used to adjust the position of the clamp head positioning base 1, support base 2, and fixed base positioning block 3 on the base 5 according to the length of the clamp rod. The base 5 has a sliding groove 26 that interlocks with the guide protrusions 22 on the clamp head positioning base 1, support base 2, and fixed base positioning block 3 for alignment, ensuring that the clamp head positioning base 1, support base 2, and fixed base positioning block 3 are aligned. The base 5 is then secured to the laser welding machine using a stepped hole 27 that engages a fastener such as a screw.

[0046] The present invention prevents the needle holder rod from moving during tack welding and assembly, thereby improving product production efficiency. Furthermore, a simple structure allows the entire rod to be tensioned forward and backward, and the position of the fixing base on the metal pipe is determined by positioning the locating boss. This ensures the accurate position of the fixing base on the rod, improving the performance, safety, and effectiveness of the product. This prevents looseness between the rod parts due to gaps at various locations, which could result in inaccurate positioning.

[0047] See also Figure 15-16 The working method of installing the pliers rod is as follows: first, thread the pliers head 11 and the pull rod 13, then weld the pliers head 11 and the metal tube 12, and sleeve the fixing seat 8 on the metal tube 12; embed the ball head of the pull rod 13 into the ball head clamping groove of the pull rod fixing block 6, so that the gap of the pliers head 11 is stuck on the positioning protrusion 16 of the pliers head positioning seat 1, and the metal tube 12 is stuck in the groove 30 of the limit block 9 of the support seat 2; rotate the rotating handle 10 on the quick clamp 4 counterclockwise to the maximum angle, so that the tension spring 14 is in the maximum tensioning state, and the tension spring 14 drives the pliers head positioning seat 1 to move toward the side of the quick clamp 4. Under the action of the elastic force of the tension spring 14, the positioning protrusion 16 of the pliers head positioning seat 1 pulls the pliers head 11. Since the end of the pull rod 13 is clamped by the pull rod fixing block 6, the pull rod 13 is pulled out. The rod 13 and the metal tube 12 are both in a tensioned state (the positioning protrusion 16 and the pull rod fixing block 6 tighten the pliers head 11 and the pull rod 13 from two opposite directions, and the pliers head 11 and the metal tube 12 have been fixedly connected by laser welding, so that the metal tube 12 is also in a tensioned state, and the hinge pin 11.1 of the pliers head 11 and the pull rod fixing block 6 tighten the pull rod 13 from two opposite directions), the pliers head 11 is in a clamped closed state, that is, an extreme state of the relative position of the pull rod 13 and the metal tube 12. At this time, the fixed seat 8 mounted on the metal tube 12 is slid to the positioning protrusion 7 that abuts the fixed seat positioning block 3, thereby realizing the precise positioning of the fixed seat 8 relative to the pull rod 13 and the metal tube 12, and the fixed seat 8 is welded and fixed to the metal tube 12 by laser welding. The present invention achieves precise positioning by positioning the clamp rod on the clamp head fixing seat, the support seat, and the fixing seat positioning block, and tensioning the entire clamp rod through a quick clamp. This can accurately ensure the position of the fixing seat on the clamp rod, thereby improving the product's performance and safety and effectiveness.

[0048] The embodiments of the present invention are described above in conjunction with the accompanying drawings. The embodiments of the present invention and the features thereof may be combined with each other unless there is any conflict. The present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Under the guidance of the present invention, those skilled in the art may devise various forms without departing from the spirit of the present invention and the scope of protection of the claims. All of these forms fall within the scope of protection of the present invention.

Claims

1. A mounting and positioning device for a medical clamping device, the medical clamping device comprising a clamp head (11), a pull rod (13), a metal tube (12) and a fixing seat (8), wherein the clamp head (11) is fixedly connected to one end of the pull rod (13) and the metal tube (12), and the fixing seat (8) is sleeved on the other end of the metal tube (12); characterized in that: The installation positioning device comprises a base (5), a clamp head positioning seat (1), a support seat (2), a fixed seat positioning block (3), a pull rod fixing block (6) and an elastic tensioning mechanism; The pliers head positioning seat (1) is slidably arranged on the base (5), and a positioning protrusion (16) for inserting into the gap of the pliers head (11) is provided on the pliers head positioning seat (1); the elastic tensioning mechanism is arranged on the base (5) and is used to apply elastic force to the pliers head positioning seat (1); The fixed seat positioning block (3) is fixedly arranged on the base (5), and the fixed seat positioning block (3) is provided with a positioning boss (7) for axially positioning the fixed seat (8); The support seat (2) is fixedly arranged on the base (5), and a limiting block (9) for supporting and limiting the metal tube (12) is provided on the support seat (2); The pull rod fixing block (6) is detachably arranged on the fixing seat positioning block (3) or the base (5), and the pull rod fixing block (6) is used to clamp the end of the pull rod (13) away from the clamp head (11).

2. A mounting and positioning device for a medical clamping device according to claim 1, characterized in that: The elastic tensioning mechanism comprises a tension spring (14) and a quick clamp (4), one end of the tension spring (14) is connected to the clamp head positioning seat (1), and the other end is connected to the push-pull rod (25) of the quick clamp (4).

3. A mounting and positioning device for a medical clamping device according to claim 1, characterized in that: A positioning block (20) is detachably provided in the clamp head positioning seat (1), and the positioning protrusion (16) is fixedly provided on the positioning block (20).

4. A mounting and positioning device for a medical clamping device according to claim 1, characterized in that: The base (5) is provided with a slide groove (26) extending along a straight line, and the bottoms of the clamp head positioning seat (1), the support seat (2), and the fixed seat positioning block (3) are all provided with a guide protrusion (22) matching the slide groove (26).

5. A mounting and positioning device for a medical clamping device according to claim 4, characterized in that: The base (5) is provided with a first strip groove (28) corresponding to the clamp head positioning seat (1), and the extension direction of the first strip groove (28) is parallel to the extension direction of the slide groove (26). The clamp head positioning seat (1) is fixedly connected with a screw rod, and the screw rod passes through the first strip groove (28).

6. A mounting and positioning device for a medical clamping device according to claim 1, characterized in that: The limit block (9) has a groove (30) adapted to the outer diameter of the metal tube (12), the groove (30) and the metal tube (12) are interference-fitted, and the limit block (9) is an elastic component.

7. A mounting and positioning device for a medical clamping device according to claim 6, characterized in that: The limiting block (9) is made of polyurethane, rubber or silicone.

8. A mounting and positioning device for a medical clamping instrument according to claim 6, characterized in that: The support seat (2) is located between the clamp head positioning seat (1) and the fixed seat positioning block (3).

9. A mounting and positioning device for a medical clamping device according to claim 1, characterized in that: The end of the pull rod (13) facing away from the clamp head (11) has a ball head (13.1), and the pull rod fixing block (6) has a ball head clamping groove (31) for accommodating the ball head (13.1), and the ball head clamping groove (31) is used to clamp the ball head (13.1) in the axial direction; a second strip groove (32) is also provided on the pull rod fixing block (6), and the pull rod fixing block (6) is fixed to the base (5) or the fixed seat positioning block (3) by a fastening bolt (33).

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