Catheter sheath clamping mechanism and wire feeding module

Abstract

The utility model provides a catheter sheath clamping mechanism and a wire feeding module, and relates to the technical field of medical apparatus, the catheter sheath clamping mechanism comprises a first clamping assembly, a second clamping assembly and an elastic connecting assembly, the first clamping assembly and the second clamping assembly are correspondingly arranged, the second clamping assembly is provided with a counterbore, and the wire feeding module is connected with the first clamping assembly and the second clamping assembly. The elastic connecting assembly comprises a plurality of connecting columns and elastic pieces matched with the connecting columns, the head ends of the connecting columns are fixedly connected with the first clamping assembly, and the tail ends of the connecting columns are movably inserted into the counterbores; the elastic piece is connected with the tail end of the connecting column and a platform on the inner wall of the counterbore, and when the elastic piece is compressed, pulling force enabling the first clamping assembly and the second clamping assembly to move oppositely for clamping is generated. The catheter sheath clamping mechanism is simple in structure and easy and convenient to operate, the catheter sheath or the guide wire sheath can be stably clamped, and the working efficiency of doctors is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of interventional surgical robots, in particular to a catheter sheath clamping mechanism and a wire feeding module. Background Art

[0002] During interventional surgery, in order to ensure that the guidewire can be smoothly delivered to the diseased part of the patient's body, the catheter generally needs to be fixed. In traditional interventional surgery, the catheter is often manually held by medical staff, but during the treatment process, the position of the catheter needs to be kept for a long time without moving. After a long treatment time, medical staff are prone to hand tremors that cause the catheter to move, causing secondary damage to the patient. For this reason, researchers in this field have developed an interventional surgery robot that greatly reduces the risk of treatment by fixing the catheter sheath.

[0003] However, the catheter sheath clamping tool of the existing interventional surgical robot has a relatively complex structure, and the actual operation of the doctor is relatively cumbersome, resulting in prolonged treatment time and reduced work efficiency of the doctor. Utility Model Content

[0004] The purpose of the utility model is to solve the above-mentioned problem and to provide a catheter sheath clamping mechanism and a wire feeding module for conveniently clamping the catheter sheath.

[0005] To achieve the above-mentioned purpose, the present application provides a catheter sheath clamping mechanism, including a first clamping component, a second clamping component and an elastic connection component, wherein the first clamping component and the second clamping component are correspondingly arranged, the second clamping component is provided with a countersunk hole, the elastic connection component includes a plurality of connecting columns and an elastic member matching the connecting column, the head end of the connecting column is fixedly connected to the first clamping component, and the end can be movably inserted into the countersunk hole; the elastic member connects the end of the connecting column and the platform of the inner wall of the countersunk hole, and when the elastic member is compressed, a pulling force is generated to make the first clamping component and the second clamping component move toward each other. In this way, when installing the catheter sheath, there is no need to perform the catheter or guidewire perforation action first, but the catheter sheath of the catheter or guidewire can be directly placed into the pulled catheter sheath clamping mechanism.

[0006] The utility model describes a catheter sheath clamping mechanism, wherein the first clamping assembly and the second clamping assembly are arranged opposite to each other, and the catheter sheath is located between the first clamping assembly and the second clamping assembly, and the first clamping assembly and the second clamping assembly move toward each other under the elastic force generated by the compression of the elastic member until the catheter sheath is compressed, thereby clamping and fixing the catheter sheath. When the catheter sheath needs to be released, only an external force needs to be applied, which is greater than the elastic force generated by the elastic member and in the opposite direction, so that the first clamping assembly and the second clamping assembly can be moved away from each other, and the catheter sheath is released. The utility model has a simple structure and is easy to operate, and can stably clamp the catheter sheath or the guidewire sheath, thereby improving the doctor's work efficiency.

[0007] The utility model also provides a wire feeding module, which can clamp the catheter sheath through the catheter sheath clamping mechanism to keep the position stable, and then realize accurate pushing and rotation of the catheter.

[0008] In order to better understand and implement the present invention, the present invention is described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is a schematic structural diagram of a catheter sheath clamping mechanism in one embodiment of the present application;

[0010] Figure 2 An exploded schematic diagram of a catheter sheath clamping mechanism in one embodiment of the present application;

[0011] Figure 3 This is a schematic structural diagram of a first clamping platform and a handle of a catheter sheath clamping mechanism in one embodiment of the present application;

[0012] Figure 4 It is a cross-sectional schematic diagram of a catheter sheath clamping mechanism in one embodiment of the present application;

[0013] Figure 5 A schematic structural diagram of a catheter sheath clamping mechanism from another perspective in one embodiment of the present application;

[0014] Figure 6 This is a schematic diagram of the structure of a wire feeding module in one embodiment of the present application.

[0015] Numbers in the figure:

[0016] 1-first clamping assembly, 2-second clamping assembly, 3-elastic connecting assembly, 11-first clamping platform, 12-first buffer pad, 13-handle, 21-second clamping platform, 22-second buffer pad, 23-assembly part, 24-base, 31-connecting column, 32-spring, 111-first groove, 211-second groove, 241-countersunk hole, 311-column head, 400-fixed shell, 500-catheter rotating mechanism, 600-catheter pushing mechanism, 700-catheter limiting mechanism, 800-catheter sheath clamping mechanism. DETAILED DESCRIPTION

[0017] See also Figures 1 to 5 The present embodiment provides a catheter sheath clamping mechanism, which is mainly used for an interventional surgical robot, and includes a first clamping component 1, a second clamping component 2 and an elastic connecting component 3. The first clamping component 1 and the second clamping component 2 are correspondingly arranged, and the second clamping component 2 is provided with a countersunk hole 241. The elastic connecting component 3 includes a plurality of connecting columns 31 and an elastic member matching the connecting columns 31. The head end of the connecting column 31 is fixedly connected to the first clamping component 1, and the end can be movably inserted into the countersunk hole 241; the elastic member connects the end of the connecting column 31 and the platform of the inner wall of the countersunk hole 241. When the elastic member is compressed, a pulling force is generated to make the first clamping component 1 and the second clamping component 2 move toward each other.

[0018] The clamping surface of the first clamping assembly 1 and the clamping surface of the second clamping assembly 2 form a clamping area. Preferably, the clamping surfaces of the first clamping assembly 1 and the second clamping assembly 2 are both square, and the long sides are parallel to the axial direction of the catheter sheath, which can increase the area of ​​clamping the catheter sheath and maintain the clamping stability of the catheter sheath. In other embodiments, the clamping surfaces of the first clamping assembly 1 and the second clamping assembly 2 can also be circular or other shapes.

[0019] When the elastic member is compressed, an elastic force is generated, and the first clamping component 1 and the second clamping component 2 are pressed tightly together under the action of the elastic force. When an external force not less than the elastic force and in the opposite direction is applied, the elastic member is compressed again, and the compressed stroke is the distance between the clamping surface of the first clamping component 1 and the clamping surface of the second clamping component 2. After the catheter sheath is placed in the clamping area, the external force is removed, and the first clamping component 1 and the second clamping component 2 move toward each other again under the action of the elastic force until the catheter sheath is compressed.

[0020] The head end of the connecting column 31 is fixedly connected to the first clamping assembly 1, and the staff can move the connecting column 31 upward by operating the first clamping assembly 1, thereby compressing the elastic member. In this embodiment, the connecting column 31 is threadedly connected to the first clamping assembly 1, which is convenient for disassembly and disinfection. In other embodiments, the connection method of the connecting column 31 and the first clamping assembly 1 can also be a bayonet or buckle connection.

[0021] In one embodiment, the first clamping assembly 1 includes a first clamping platform 11 and a first buffer pad 12, the first clamping platform 11 is provided with a first groove 111, and the first buffer pad 12 is detachably fixed in the first groove 111; the second clamping assembly 2 includes a second clamping platform 21 and a second buffer pad 22, the second clamping platform 21 is provided with a second groove 211, and the second buffer pad 22 is detachably fixed in the second groove 211; the first buffer pad 12 and the second buffer pad 22 are arranged correspondingly. The first buffer pad 12 and the second buffer pad 22 have elastic deformation properties, and can fit the surface of the catheter sheath when clamping the catheter sheath, limit the movement of the catheter sheath in three-dimensional directions, and keep the position of the catheter sheath stable. The first buffer pad 12 and the second buffer pad 22 are both disposable silicone materials, thereby avoiding the problem of disinfection and saving costs. In other embodiments, the first buffer pad 12 and the second buffer pad 22 can also be buffer pads made of other materials with elastic deformation.

[0022] In one embodiment, the first buffer pad 12 protrudes from the side of the first clamping platform 11 facing the clamping surface, and the second buffer pad 22 protrudes from the side of the second clamping platform 21 facing the clamping surface. When clamping the catheter sheath, the first buffer pad 12 and the second buffer pad 22 wrap the catheter sheath, so that the catheter sheath is not easily damaged by the clamping force during the clamping process, and the catheter sheath is not easily in contact with the first clamping platform 11 and the second clamping platform 21, so as to avoid contamination. In another embodiment, the first clamping platform 11 and the second clamping platform 21 have a buffering function and are disposable, and the first buffer pad 12 and the second buffer pad 22 are not required.

[0023] In one embodiment, the first cushion 12 and the second cushion 22 are provided with anti-skid patterns on one side facing the clamping surface to prevent the catheter sheath from displacement during the catheter pushing process. In another embodiment, the first cushion 12 and the second cushion 22 can also be made of a material with anti-skid properties.

[0024] In one embodiment, the second clamping assembly 2 further includes an assembly portion 23 for fixedly assembling with the wire feeding module, and a base 24 provided with the countersunk holes 241. The second clamping platform 21 is located on one side of the base 24, and the assembly portion 23 is located on the same side of the second clamping platform 21 and the base 24, and the assembly surface of the assembly portion 23 is perpendicular to the clamping surface of the second clamping platform 21. The assembly portion 23 fixes the second clamping assembly 2 on the wire feeding module, enabling the doctor to operate the first clamping assembly 1 with one hand; the base 24 is used to accommodate the elastic connection assembly 3.

[0025] The cross-section of the assembly portion 23 is in a "T" shape, and is provided with a plurality of assembly holes 231 for assembling with the wire feeding module of the interventional surgical robot. In this embodiment, the number of the assembly holes 231 is 3, and one of them is located on the mounting plane on one side of the "T" foot, so that the second clamping assembly 2 is fixed on the wire feeding module. In other embodiments, the outer shape of the assembly portion 23 may also be in a "匚" shape or other shapes. In other embodiments, the number of the assembly holes 231 may also be other numbers.

[0026] In one embodiment, a limiting portion 311 is provided at the end of the connecting column 31, the elastic member is a spring 32, the outer diameter of the limiting portion 311 is larger than the inner diameter of the spring 32, which limits the position of the spring 32 to prevent the spring 32 from falling off the connecting column 31. The spring 32 is coaxially sleeved on the connecting column 31, and one end is assembled on the limiting portion 311, and the other end presses against the platform on the inner wall of the countersunk hole. The spring 32 is in a compressed state, and through the elastic force exerted by the spring 32 on the limiting portion 311 and the platform on the inner wall of the countersunk hole, the connecting column has a tendency to move away from the platform on the inner wall of the countersunk hole, thereby generating a pulling force that causes the first clamping assembly 1 and the second clamping assembly 2 to move towards each other. In other embodiments, the elastic member may also be an elastic strip or other elastic members.

[0027] In one embodiment, the number of the connecting columns 31 is 3, arranged in a "pin" shape, to prevent the catheter sheath from shifting due to insufficient stability when the first clamping assembly 1 and the second clamping assembly 2 clamp the catheter sheath. In other embodiments, the number of the connecting columns 31 may be other numbers, and the structure formed by arranging the connecting columns 31 may also be other stable structures.

[0028] In one embodiment, the first clamping assembly 1 further includes a handle 13, and the handle 13 is used to pull the first clamping assembly 1. The handle 13 extends from the first clamping platform 11, and the front end of the handle 13 is located on the same plane as the first clamping platform 11, and the rear end of the handle 13 is bent in the same direction as the clamping surface of the first clamping platform 11 to form a hook portion to fit closely to the contour of the staff's fingers. The width of the handle 13 gradually decreases from the front end to the rear end, which is convenient for bending the fingers to apply tension. In another embodiment, the handle 13 can be a pull ring, which is arranged on the side of the first clamping platform 11 away from the clamping surface, and the operator can clamp and release the catheter sheath by pulling the pull ring.

[0029] See also Figure 6 The utility model also provides a wire feeding module, including a fixed shell 400, a catheter rotating mechanism 500, a catheter pushing mechanism 600, a catheter limiting mechanism 700, and a catheter sheath clamping mechanism 800. The fixed shell 400 has a receiving space. The catheter rotating mechanism 500 is located in the receiving space of the fixed shell 400 and is used to drive the catheter pushing mechanism 600 to rotate. The catheter sheath clamping mechanism 800, the catheter pushing mechanism 600 and the catheter limiting mechanism 700 are arranged in a straight line.

[0030] The catheter sheath clamping mechanism 800 has been described in detail in the above embodiments and will not be described again here.

[0031] In one embodiment, the fixed shell 400 is fixed on the wire feeding device of the interventional surgery robot, the catheter sheath clamping mechanism 800 clamps the catheter sheath at the end of the catheter, the catheter is clamped and pushed by the catheter pushing mechanism 600, the catheter part is limited in the catheter limiting mechanism 700 to make linear motion, and the catheter rotation mechanism 500 rotates to drive the catheter to rotate, thereby changing the movement angle of the catheter.

[0032] The present invention is not limited to the above-mentioned embodiments. If various changes or modifications to the present invention do not depart from the spirit and scope of the present invention, and if these changes and modifications fall within the claims of the present invention and the scope of equivalent technologies, the present invention is also intended to include these changes and modifications.

Claims

1. A catheter sheath clamping mechanism, characterized in that: It includes a first clamping assembly, a second clamping assembly and an elastic connection assembly. The first clamping assembly and the second clamping assembly are arranged correspondingly. The second clamping assembly is provided with a countersunk hole. The elastic connection assembly includes a plurality of connecting columns and elastic members matching the connecting columns. The first ends of the connecting columns are fixedly connected to the first clamping assembly, and the second ends are movably inserted into the countersunk hole. The elastic members connect the second ends of the connecting columns and the platforms on the inner walls of the countersunk holes. When the elastic members are compressed, a pulling force is generated to make the first clamping assembly and the second clamping assembly move towards each other for clamping.

2. A catheter sheath clamping mechanism according to claim 1, characterized in that: The first clamping assembly includes a first clamping platform and a first buffer pad. The first clamping platform is provided with a first groove, and the first buffer pad is detachably fixed in the first groove. The second clamping assembly includes a second clamping platform and a second buffer pad. The second clamping platform is provided with a second groove, and the second buffer pad is detachably fixed in the second groove. The first buffer pad and the second buffer pad are arranged correspondingly.

3. A catheter sheath clamping mechanism according to claim 2, characterized in that: The first buffer pad protrudes from one side of the first clamping platform facing the clamping surface, and the second buffer pad protrudes from one side of the second clamping platform facing the clamping surface.

4. A catheter sheath clamping mechanism according to claim 2, characterized in that: Anti-slip patterns are provided on the sides of the first buffer pad and the second buffer pad facing the clamping surface.

5. The catheter sheath clamping mechanism according to claim 2, characterized in that: The second clamping assembly further includes an assembly part for assembling and fixing with the wire feeding module of the interventional surgical robot, and a base provided with the countersunk hole. The second clamping platform is located on one side of the base, and the assembly part is located on the same side of the second clamping platform and the base, and the assembly surface of the assembly part is perpendicular to the clamping surface of the second clamping platform.

6. A catheter sheath clamping mechanism according to claim 5, characterized in that: The cross-section of the assembly part is in a "T" shape, and a plurality of assembly holes for assembling with the wire feeding module of the interventional surgical robot are provided.

7. The catheter sheath clamping mechanism according to claim 1, characterized in that: A limiting part is provided at the second end of the connecting column. The elastic member is a spring. The outer diameter of the limiting part is larger than the inner diameter of the spring. The spring is sleeved coaxially with the connecting column, and one end is assembled on the limiting part, and the other end presses against the platform on the inner wall of the countersunk hole.

8. The catheter sheath clamping mechanism according to claim 1, characterized in that: The number of the connecting columns is 3, and they are arranged in a "pin" shape.

9. A catheter sheath clamping mechanism according to any one of claims 2 to 6, characterized in that: The first clamping assembly further includes a handle. The handle extends from the first clamping platform. The front end of the handle is on the same plane as the first clamping platform, and the rear end of the handle bends towards the same direction as the clamping surface of the first clamping platform to form a hook part.

10. A wire feeding module, characterized in that: It includes a fixed housing, a catheter rotating mechanism, a catheter pushing mechanism, a catheter limiting mechanism, and a catheter sheath clamping mechanism as described in any one of claims 1-9. The fixed housing has a receiving space. The catheter rotating mechanism is located in the receiving space of the fixed housing and is used to drive the catheter pushing mechanism to rotate. The catheter sheath clamping mechanism, the catheter pushing mechanism and the catheter limiting mechanism are arranged in a straight line.

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