Guide wire control handle

Abstract

The utility model discloses a guide wire control handle, and belongs to the technical field of medical instruments. The guide wire control handle comprises a handle body, a locking sleeve and a clamping piece, the clamping piece is movably arranged in a containing cavity, a retractable clamping jaw is arranged on the clamping piece, locking faces are arranged on the two sides of the clamping jaw respectively, and when the locking sleeve and the handle body are screwed tightly, clamping force can be applied to the two ends of the clamping jaw at the same time. The two ends of the clamping jaw can contract inwards at the same time to clamp the guide wire, the clamping combination face between the clamping jaw and the guide wire is increased, the stability and reliability of guide wire fixing are improved, and the phenomenon that the guide wire is loosened and cannot move or rotate along with the handle is effectively avoided. In addition, an anti-skid structure is additionally arranged on the basis that the diameter of the handle rod is reduced, the rotation following performance of the guide wire and the handle is improved, the twisting friction force of the finger pulp and the handle rod can be improved, and the stability of movement or rotation operation of the guide wire is improved.

Description

Technical Field

[0001] The utility model relates to a medical device, and more specifically, to a guide wire control handle. Background Art

[0002] Interventional therapy is an emerging treatment method between surgical treatment and medical treatment. The guide wire is an essential medical device in interventional therapy. Its function is to guide the catheter through tortuous and hardened blood vessels, selectively enter the branches of blood vessels, and perform local treatment on the lesion under the guidance of imaging equipment. It has the advantages of less trauma, simplicity, safety, effectiveness, fewer complications, and significantly shortening the hospital stay.

[0003] Since the surface of the guide wire is coated with a hydrophilic coating to increase the smoothness of the guide wire, and the diameter of the guide wire is very small, there is insufficient friction between the finger pulp and the guide wire during operation. Therefore, it is very inconvenient for doctors to move and rotate the guide wire. For this reason, a guide wire control handle (also known as a "guide wire twisting control device") is needed to clamp and fix the guide wire, and the movement or rotation operation of the guide wire is realized through the guide wire control handle.

[0004] Currently, the existing guide wire control handles mainly have the following disadvantages:

[0005] ① The clamping firmness of the guide wire handle for the guide wire is poor. Most of the existing guide wire handles use a multi-lobe tightening structure to clamp the guide wire. When tightening, the locking cap is screwed to squeeze the multi-lobe tightening structure through the conical surface to clamp the guide wire. However, this locking cap clamps the multi-lobe tightening structure unidirectionally, and the clamping force is mainly concentrated at the end of the multi-lobe tightening structure, which easily leads to loose clamping of the guide wire.

[0006] ② In order to increase the grasping space of the guide wire through the guide wire handle, most of the existing guide wire handles are designed with an outer diameter of more than 5 mm. This design actually makes it inconvenient to twist and turn the guide wire handle through the finger pulp, and the followability of the guide wire rotation and the handle rotation is poor. Currently, some guide wire handles are designed with an outer diameter of 2 - 3 mm to improve the rotation followability of the guide wire and the handle, such as the "guide wire control handle for improving the followability of the guide wire" disclosed in Chinese Patent No. ZL202220489267.1. However, the thinner guide wire handle brings the problem of insufficient twisting friction, which is easy to slip or even slip off. Summary of the Invention

[0007] 1. Technical Problems to be Solved by the Utility Model

[0008] The purpose of the present utility model is to overcome the above-mentioned deficiencies existing in the existing guide wire handle, and provide a guide wire control handle. By adopting the technical solution of the present utility model, the clamping member is movably arranged in the cavity of the handle body, and locking structures are respectively arranged at both ends of the clamping jaws of the clamping member. When the locking sleeve is screwed tightly with the handle body, clamping forces can be simultaneously applied to both ends of the clamping jaws, so that both ends of the clamping jaws can contract inwards simultaneously to clamp the guide wire, increasing the clamping joint surface between the clamping jaws and the guide wire, and improving the stability and reliability of the guide wire fixation. In addition, on the basis of reducing the diameter of the handle rod, an anti-slip structure is added, which not only improves the rotational followability of the guide wire and the handle, but also can increase the rubbing friction force between the finger pulp and the handle rod, and improve the stability of the guide wire movement or rotation operation.

[0009] 2. Technical solution

[0010] To achieve the above purpose, the technical solution provided by the present utility model is as follows:

[0011] A guide wire control handle of the present utility model includes a handle body, a locking sleeve and a clamping member. A cavity is provided at the distal end of the handle body. The clamping member is movably arranged in the cavity. A lower pressing surface is provided in the cavity. A retractable clamping jaw is provided on the clamping member. A lower locking surface that cooperates with the above-mentioned lower pressing surface is provided on the side of the clamping jaw close to the cavity. An upper locking surface is provided on the other side of the clamping jaw. The locking sleeve is sleeved outside the clamping member and is threadedly connected to the distal end of the handle body. The inner side of the locking sleeve has an upper pressing surface that cooperates with the above-mentioned upper locking surface. A guide wire hole corresponding to the clamping hole between the clamping jaws is provided at the distal end of the locking sleeve; when the locking sleeve is screwed tightly with the handle body, the upper pressing surface squeezes the upper locking surface to cause the distal end of the clamping jaw to contract, and the lower pressing surface squeezes the lower locking surface to cause the proximal end of the clamping jaw to contract.

[0012] Furthermore, the upper pressing surface and the upper locking surface are a pair of mating conical surfaces, and the lower pressing surface and the lower locking surface are a pair of mating conical surfaces.

[0013] Furthermore, the clamping member is made of high molecular plastic, and the clamping jaws are separated by an opening groove on the clamping member.

[0014] Furthermore, a chamfer is also provided at one end of the guide wire hole close to the outer side of the locking sleeve.

[0015] Furthermore, the handle body includes a handle rod, a base provided at the distal end of the handle rod, and a connecting column provided on the base. The cavity is provided inside the connecting column. External threads are provided on the connecting column, and internal threads matching the above-mentioned external threads are provided on the inner side of the locking sleeve.

[0016] Furthermore, the diameter D of the handle rod is 1.5 - 3 mm, and an anti-slip structure is also provided on the outer wall of the handle rod.

[0017] Furthermore, the ratio of the major axis to the minor axis L / D of the handle rod is 6 to 12.

[0018] Furthermore, the outer sides of the base and the locking sleeve are both provided with a screwing structure facilitating locking or loosening operations.

[0019] Furthermore, one end of the base connected to the handle rod is a transition conical surface whose size gradually decreases towards the handle rod.

[0020] Furthermore, the clamping member is also provided with a through hole communicating with the cavity, and the handle rod also has a central hole communicating with the cavity.

[0021] 3. Beneficial effects

[0022] Adopting the technical solution provided by the present utility model, compared with the existing well-known technologies, it has the following beneficial effects:

[0023] (1) A guide wire control handle of the present utility model includes a handle body, a locking sleeve and a clamping member. The clamping member is movably arranged in the cavity. The clamping member is provided with retractable jaws. Locking surfaces are respectively arranged on both sides of the jaws. When the locking sleeve is screwed tightly with the handle body, clamping forces can be simultaneously applied to both ends of the jaws, so that both ends of the jaws can simultaneously contract inward to clamp the guide wire, increasing the clamping joint surface between the jaws and the guide wire, improving the stability and reliability of the guide wire fixation, and effectively avoiding the phenomenon that the guide wire loosens and cannot move or rotate following the handle;

[0024] (2) In a guide wire control handle of the present utility model, the upper pressing surface and the upper locking surface are a pair of mating conical surfaces, and the lower pressing surface and the lower locking surface are a pair of mating conical surfaces. By using the conical surface structure in cooperation, not only is the structure simple, facilitating the inward contraction and clamping of the jaws, but also the contact surface of the conical surface cooperation is large, enabling stable fixation of the clamping member and avoiding relative rotation between the clamping member and the handle body;

[0025] (3) A guide wire control handle of the present utility model has the clamping member made of a high molecular plastic, replacing the traditional brass material, which can reduce the pinching damage to the guide wire; the jaws are separated by the opening grooves on the clamping member, with a simple structure and convenient manufacturing. The jaws can automatically open by using the self-elasticity of the clamping arms and contract inward when the locking sleeve is locked to reduce the size of the intermediate clamping hole, thereby firmly clamping the guide wire, facilitating the installation or disassembly of the guide wire;

[0026] (4) A guide wire control handle of the present utility model is also provided with a chamfer at one end of the guide wire hole close to the outer side of the locking sleeve, which can play a guiding role when threading the guide wire, facilitating the installation and fixation of the guide wire on the control handle;

[0027] (5) A guide wire control handle of the present utility model, the handle body of which comprises a handle rod, a base provided at the distal end of the handle rod, and a connecting column provided on the base. A cavity is provided inside the connecting column. The connecting column is provided with an external thread, and the inner side of the locking sleeve is provided with an internal thread matching the above-mentioned external thread. With this structural design, the structure is simple and convenient to manufacture. And because the size of the base part is larger than that of the handle rod, it is convenient to connect the base and the locking sleeve, further facilitating the disassembly and assembly operation of the guide wire;

[0028] (6) A guide wire control handle of the present utility model, the diameter D of the handle rod is 1.5 - 3 mm, and an anti-slip structure is further provided on the outer wall of the handle rod. On the basis of reducing the diameter of the handle rod, the anti-slip structure is added, which not only improves the rotational followability of the guide wire and the handle, enhances the convenience of guide wire operation and the operation feel, but also can increase the rubbing friction force between the finger pulp and the handle rod, improve the stability of the guide wire movement or rotation operation, and further enhance the operation feel;

[0029] (7) A guide wire control handle of the present utility model, the ratio of the major axis to the minor axis L / D of the handle rod is 6 - 12. Through the design of a suitable ratio of the major axis to the minor axis, the operation of the handle rod is more convenient, avoiding the reduction of operation flexibility due to the handle rod being too long or too short;

[0030] (8) A guide wire control handle of the present utility model, the outer sides of the base and the locking sleeve are both provided with a screwing structure facilitating locking or loosening operations, which can facilitate the tightening or loosening operation of the locking sleeve and ensure the firmness of the guide wire locking;

[0031] (9) A guide wire control handle of the present utility model, the end of the base connected to the handle rod is a transition conical surface with a size gradually decreasing towards the handle rod direction. It can more accurately adjust the operation position between the finger and the handle rod by contacting the transition conical surface, and also facilitates the doctor to fix the angle of the control handle by using the transition conical surface, making the operation more accurate;

[0032] (10) A guide wire control handle of the present utility model, the clamping member is further provided with a through hole communicating with the cavity, and the handle rod also has a central hole communicating with the cavity, enabling the guide wire to pass through the control handle, facilitating the control handle to be fixed at different positions of the guide wire, and further improving the flexibility of the guide wire intervention operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is a three-dimensional structural schematic diagram of a guide wire control handle of the present utility model;

[0034] Figure 2 is a front view of a guide wire control handle of the present utility model;

[0035] Figure 3 is a cross-sectional view of a guide wire control handle of the present utility model;

[0036] Figure 4 Schematic diagram of the split structure of a guide wire control handle of the present utility model;

[0037] Figure 5 Schematic diagram of a structure of the handle body of a guide wire control handle of the present utility model at an angle;

[0038] Figure 6 Schematic diagram of another angle structure of the handle body of a guide wire control handle of the present utility model;

[0039] Figure 7 Cross-sectional view of the handle body of a guide wire control handle of the present utility model;

[0040] Figure 8 Schematic diagram of the three-dimensional structure of the clamping member of a guide wire control handle of the present utility model;

[0041] Figure 9 Cross-sectional view of the locking sleeve of a guide wire control handle of the present utility model.

[0042] Explanation of the reference numerals in the schematic diagram:

[0043] 1. Handle body; 1-1. Handle rod; 1-1a. Anti-slip structure; 1-1b. Central hole; 1-2. Base; 1-3. Connecting column; 1-3a. External thread; 1-3b. Cavity; 1-3c. Lower pressing surface; 2. Locking sleeve; 2-1. Guide wire hole; 2-2. Internal thread; 2-3. Upper pressing surface; 2-4. Chamfer; 3. Clamping member; 3-1. Claw; 3-2. Opening groove; 3-3. Upper locking surface; 3-4. Lower locking surface; 3-5. Through hole. Specific embodiments

[0044] To further understand the content of the present utility model, the present utility model will be described in detail in combination with the accompanying drawings and embodiments.

[0045] [Embodiment]

[0046] Combined with Figures 1 to 4As shown in the figure, a guide wire manipulation handle according to this embodiment includes a handle body 1, a locking sleeve 2, and a clamping member 3. The handle body 1 is the part for guiding wire operation, the clamping member 3 is the part for clamping the guide wire, and the locking sleeve 2 is used to lock the clamping member 3 so that the clamping member 3 clamps the guide wire, making the handle body 1 fixed to the guide wire. Then, the guide wire can be pushed or rotated through the handle body 1. Different from the existing guide wire handles, a cavity 1-3b is provided at the distal end of the handle body 1, the clamping member 3 is movably arranged in the cavity 1-3b, a lower pressing surface 1-3c is provided in the cavity 1-3b, a retractable claw 3-1 is provided on the clamping member 3, a lower locking surface 3-4 that cooperates with the above-mentioned lower pressing surface 1-3c is provided on one side of the claw 3-1 close to the cavity 1-3b, an upper locking surface 3-3 is provided on the other side of the claw 3-1, the locking sleeve 2 is sleeved outside the clamping member 3 and is threadedly connected to the distal end of the handle body 1, an upper pressing surface 2-3 that cooperates with the above-mentioned upper locking surface 3-3 is provided on the inner side of the locking sleeve 2, and a guide wire hole 2-1 corresponding to the clamping hole between the claw 3-1 is provided at the distal end of the locking sleeve 2. When the locking sleeve 2 is screwed tightly with the handle body 1, the upper pressing surface 2-3 squeezes the upper locking surface 3-3 to make the distal end of the claw 3-1 contract, and the lower pressing surface 1-3c squeezes the lower locking surface 3-4 to make the proximal end of the claw 3-1 contract. During specific installation, the locking sleeve 2 is loosened. At this time, the claw 3-1 on the clamping member 3 opens, the guide wire is inserted through the guide wire hole 2-1, and the guide wire is located in the clamping hole between the claw 3-1. After adjusting the position of the guide wire, the locking sleeve 2 is screwed tightly. The upper pressing surface 2-3 in the locking sleeve 2 contacts the upper locking surface 3-3 and drives the whole clamping member 3 to move in the cavity 1-3b, so that its lower locking surface 3-4 contacts the lower pressing surface 1-3c. Further screwing tightly the locking sleeve 2, at this time, the upper pressing surface 2-3 squeezes the upper locking surface 3-3, and the lower pressing surface 1-3c squeezes the lower locking surface 3-4, making the two sides of the claw 3-1 be pressed inward to contract and clamp the guide wire, increasing the clamping joint surface between the claw 3-1 and the guide wire, improving the stability and reliability of the guide wire fixation, and effectively avoiding the phenomenon that the guide wire loosens and cannot move or rotate following the handle.

[0047] The upper pressing surface 2-3 and the upper locking surface 3-3, the lower pressing surface 1-3c and the lower locking surface 3-4 are all a pair of mating surfaces that can make the claw 3-1 contract under pressure. Refer to Figure 3 As shown in the figure, in this embodiment, the above-mentioned upper pressing surface 2-3 and upper locking surface 3-3 are a pair of mating conical surfaces, and the lower pressing surface 1-3c and lower locking surface 3-4 are a pair of mating conical surfaces. Using the conical surface structure for cooperation, not only is the structure simple, facilitating the inward contraction and clamping of the claw 3-1, but also the contact surface of the conical surface cooperation is large, which can realize the stable fixation of the clamping member 3 and avoid relative rotation between the clamping member 3 and the handle body 1.

[0048] As Figure 4 and Figure 8As shown in the figure, the above clamping member 3 is preferably made of high molecular plastic, such as POM (polyoxymethylene), etc., which has excellent physical, mechanical and chemical properties, especially showing good friction resistance. Using high molecular plastic instead of traditional brass material can reduce the clamping damage to the guide wire. The clamping jaws 3-1 are separated by the opening groove 3-2 on the clamping member 3. Generally, at least two clamping jaws 3-1 are provided, and 3 to 4 are optimal. There is an opening groove 3-2 between adjacent clamping jaws 3-1, so that the clamping jaws 3-1 can contract inward. The structure of the clamping member 3 is simple and easy to manufacture. The clamping jaws 3-1 can automatically open by using the self-elasticity of the clamping arm and contract inward when the locking sleeve 2 is locked to reduce the size of the intermediate clamping hole, thereby firmly clamping the guide wire and facilitating the installation or disassembly of the guide wire. The above handle body 1 and locking sleeve 2 are also preferably made of plastic material.

[0049] As Figure 1 and Figure 3 shown in the figure, in order to facilitate the threading of the guide wire, a chamfer 2-4 is also provided at one end of the guide wire hole 2-1 close to the outer side of the locking sleeve 2. The chamfer 2-4 is in the shape of a flared opening, which can play a guiding role when threading the guide wire and facilitate the installation and fixation of the guide wire on the control handle.

[0050] Connected Figures 4 to 7 shown in the figure, the handle body 1 in this embodiment includes a handle rod 1-1, a base 1-2 provided at the distal end of the handle rod 1-1, and a connecting column 1-3 provided on the base 1-2. The outer diameter of the base 1-2 is larger than the outer diameter of the handle rod 1-1. A cavity 1-3b is provided inside the connecting column 1-3. The clamping member 3 can move axially in the cavity 1-3b. An external thread 1-3a is provided on the connecting column 1-3, and an internal thread 2-2 (as Figure 9 ) matching the above external thread 1-3a is provided inside the locking sleeve 2. With this structural design, the structure is simple and easy to manufacture, and since the size of the base part is larger than that of the handle rod, it is convenient to connect the base 1-2 and the locking sleeve 2, further facilitating the disassembly and assembly operation of the guide wire. In addition, in order to facilitate the screwing of the locking sleeve 2, the outer sides of the base 1-2 and the locking sleeve 2 both have a screwing structure for facilitating locking or loosening operations. This screwing structure can be a rib provided on the outer sides of the base 1-2 and the locking sleeve 2, or the outer sides of the base 1-2 and the locking sleeve 2 can be designed as a polygonal structure, etc., which can facilitate the tightening or loosening operation of the locking sleeve and ensure the firm locking of the guide wire.

[0051] The guide wire control handle of this embodiment has a handle rod 1-1 with a diameter D of 1.5 to 3 mm, preferably 2.5 mm. An anti-slip structure 1-1a is also provided on the outer wall of the handle rod 1-1. The anti-slip structure 1-1a can be bumps, stripes, etc. provided on the outer wall of the handle rod 1-1. By adding an anti-slip structure on the basis of reducing the diameter of the handle rod 1-1, not only the rotational followability of the guide wire and the handle is improved, the convenience of guide wire operation and the operation feel are enhanced, but also the rubbing friction between the finger pulp and the handle rod 1-1 can be increased, the stability of the guide wire movement or rotation operation is improved, and the operation feel is further enhanced. Further, the aspect ratio L / D of the handle rod 1-1 is 6 to 12. For example, the length L of the handle rod 1-1 can be designed to be 22 mm. Through the design of a suitable aspect ratio, the operation of the handle rod 1-1 is more convenient, and the operation flexibility is prevented from being reduced due to the handle rod 1-1 being too long or too short.

[0052] As Figure 3 and Figure 5 shown, one end of the base 1-2 connected to the handle rod 1-1 is a transition conical surface whose size gradually decreases towards the handle rod 1-1. The operation position between the finger and the handle rod can be adjusted more accurately by contacting the transition conical surface, and it is also convenient for the doctor to fix the angle of the control handle by using the transition conical surface, making the operation more accurate. As Figure 3 , Figure 7 and Figure 8 shown, the clamping member 3 is also provided with a through hole 3-5 communicating with the cavity 1-3b, and the handle rod 1-1 also has a central hole 1-1b communicating with the cavity 1-3b, so that the guide wire can pass through the control handle, facilitating the control handle to be fixed at different positions of the guide wire, and further improving the flexibility of the guide wire intervention operation.

[0053] For a guide wire control handle of this embodiment, during use, the proximal end of the guide wire is inserted into the above-mentioned control handle through the guide wire hole 2-1. The proximal end of the guide wire can sequentially pass through the guide wire hole 2-1 of the locking sleeve 2, the through hole 3-5 of the clamping member 3, the cavity 1-3b of the handle rod 1-1 and the central hole 1-1b, and the guide wire is adjusted to a suitable position. The locking sleeve 2 is screwed tightly with the handle body 1, and the internal clamping member 3 is used to clamp and fix the guide wire. Then, the guide wire can be controlled to be pushed or rotated by pushing, pulling or rubbing the handle rod 1-1.

[0054] A guide wire control handle of the present utility model movably arranges a clamping member in the cavity of the handle body, and locking structures are respectively arranged at both ends of the clamping jaws of the clamping member. When the locking sleeve is screwed tightly with the handle body, clamping forces can be simultaneously applied to both ends of the clamping jaws, so that both ends of the clamping jaws can simultaneously contract inward to clamp the guide wire, increasing the clamping joint surface between the clamping jaws and the guide wire, and improving the stability and reliability of the guide wire fixation. In addition, an anti-slip structure is added on the basis of reducing the diameter of the handle rod, which not only improves the rotational followability of the guide wire and the handle, but also can increase the rubbing friction force between the finger pulp and the handle rod, improving the stability of the guide wire movement or rotation operation.

[0055] The present utility model and its implementation manners are schematically described above. The description is not restrictive. Only one of the implementation manners of the present utility model is shown in the drawings, and the actual structure is not limited thereto. Therefore, if those of ordinary skill in the art are inspired by it and design similar structural manners and embodiments to the technical solution without creative efforts without departing from the purpose of the present utility model, they shall fall within the protection scope of the present utility model.

Claims

1. A guidewire control handle, comprising a handle body (1), a locking sleeve (2) and a clamping member (3), characterized in that: A cavity (1-3b) is provided at the distal end of the handle body (1), the clamping member (3) is movably arranged in the cavity (1-3b), a lower pressing surface (1-3c) is provided in the cavity (1-3b), a retractable clamping jaw (3-1) is provided on the clamping member (3), a lower locking surface (3-4) matching with the lower pressing surface (1-3c) is provided on one side of the clamping jaw (3-1) close to the cavity (1-3b), an upper locking surface (3-3) is provided on the other side of the clamping jaw (3-1), and the locking sleeve (2) is sleeved on the outer side of the clamping member (3). The locking sleeve (2) is threadedly connected to the distal end of the handle body (1); the inner side of the locking sleeve (2) has an upper pressing surface (2-3) that matches the upper locking surface (3-3); the distal end of the locking sleeve (2) is provided with a guide wire hole (2-1) corresponding to the clamping hole between the clamping jaws (3-1); when the locking sleeve (2) and the handle body (1) are tightened, the upper pressing surface (2-3) squeezes the upper locking surface (3-3) to cause the distal end of the clamping jaw (3-1) to contract, and the lower pressing surface (1-3c) squeezes the lower locking surface (3-4) to cause the proximal end of the clamping jaw (3-1) to contract.

2. The guidewire control handle according to claim 1, characterized in that: The upper pressing surface (2-3) and the upper locking surface (3-3) are a pair of matching conical surfaces, and the lower pressing surface (1-3c) and the lower locking surface (3-4) are a pair of matching conical surfaces.

3. The guidewire control handle according to claim 1, characterized in that: The clamping piece (3) is made of polymer plastic, and the clamping claws (3-1) are separated by an open groove (3-2) on the clamping piece (3).

4. The guidewire control handle according to claim 1, characterized in that: One end of the wire guide hole (2-1) close to the outer side of the locking sleeve (2) is also provided with a chamfer (2-4).

5. The guidewire control handle according to any one of claims 1 to 4, characterized in that: The handle body (1) comprises a handle rod (1-1), a base (1-2) arranged at the far end of the handle rod (1-1), and a connecting column (1-3) arranged on the base (1-2); the cavity (1-3b) is arranged on the inner side of the connecting column (1-3); the connecting column (1-3) is provided with an external thread (1-3a); and the inner side of the locking sleeve (2) is provided with an internal thread (2-2) matching the external thread (1-3a).

6. The guidewire control handle according to claim 5, characterized in that: The diameter D of the handle bar (1-1) is 1.5 to 3 mm, and an anti-slip structure (1-1a) is also provided on the outer wall of the handle bar (1-1).

7. The guidewire control handle according to claim 6, characterized in that: The length-to-diameter ratio L / D of the handle bar (1-1) is 6-12.

8. The guidewire control handle according to claim 7, characterized in that: The outer sides of the base (1-2) and the locking sleeve (2) are both provided with a screwing structure for facilitating locking or loosening operations.

9. The guidewire control handle according to claim 8, characterized in that: One end of the base (1-2) connected to the handle bar (1-1) is a transition cone surface whose size gradually decreases towards the handle bar (1-1).

10. The guidewire control handle according to claim 7, characterized in that: The clamping member (3) is also provided with a through hole (3-5) communicating with the cavity (1-3b), and the handle bar (1-1) also has a central hole (1-1b) communicating with the cavity (1-3b).

Images