Renal artery radiofrequency ablation catheter

Abstract

The utility model relates to the technical field of renal artery ablation catheters, in particular to a renal artery radiofrequency ablation catheter which comprises a control handle and a connecting tube arranged at one end of the control handle, limiters are arranged on the outer surface of the connecting tube, and the connecting tube is located between the limiters. The limiting device comprises a pressing plate piece, the pressing plate piece comprises a first pressing plate and a second pressing plate on one side of the first pressing plate, through the limiting device, the connecting pipe is wound around the outer surface of the limiting device, the long connecting pipe is stored, the connecting pipe is prevented from making contact with other objects, and the connecting pipe is prevented from being damaged. One end of a connecting pipe enters a channel of a first limiting rod and a channel of a second limiting rod, then penetrates out and is sequentially wound on a limiter, and the first limiting rod and the second limiting rod move under the compression action of a spring, so that a first pressing plate and a second pressing plate move, a roller clamps the wound connecting pipe, and the connecting pipe is stored; and when in use, one end of the connecting pipe is pulled for use.

Description

Technical Field

[0001] The utility model relates to the technical field of renal artery ablation catheters, in particular to a renal artery radiofrequency ablation catheter. Background Art

[0002] The renal artery sympathetic nerves are divided into renal artery sympathetic afferent nerves and efferent nerves, which play an extremely critical role in the occurrence and development of refractory hypertension. Both are densely distributed in the renal artery adventitia in a reticular manner. In recent years, a new technology of percutaneous catheter renal sympathetic nerve radiofrequency ablation (RDN) has emerged internationally for the treatment of refractory hypertension. This method cuts off the renal sympathetic nerves through radiofrequency ablation without affecting other abdominal, pelvic or lower limb nerve innervations, achieving the purpose of lowering blood pressure while avoiding serious complications. Renal artery sympathetic nerve ablation has been widely carried out throughout the world and has been applied in the treatment of refractory hypertension with significant therapeutic effects. Utility Model Content

[0003] In view of the deficiencies of the prior art, the utility model provides a renal artery radiofrequency ablation catheter, which solves the technical problem that the ablation catheter is inconvenient to store when it is too long.

[0004] The renal artery radiofrequency ablation catheter of the utility model comprises a control handle and a connecting tube arranged at one end of the control handle, wherein the outer surface of the connecting tube is provided with a stopper, and the connecting tube is located between the stoppers;

[0005] The limiter includes a pressure plate component, which includes a first pressure plate and a second pressure plate on one side of the first pressure plate, the first pressure plate is located on the right side of the connecting tube and the second pressure plate is located on the left side of the first pressure plate, a spacing is set between the first pressure plate and the second pressure plate, a limiting component is fixedly provided on the side where the first pressure plate and the second pressure plate are close to each other, a movable component is provided at one end of the limiting component, and the connecting tube is arranged inside the spacing between the first pressure plate and the second pressure plate, and is located inside the limiting component.

[0006] As a further improvement of the present invention, the limiting member includes a first limiting rod fixedly arranged on one side of the first pressure plate and a second limiting rod fixedly arranged on one side of the second pressure plate. The first limiting rods are provided in plurality, and the plurality of the first limiting rods are provided at the four corners of one side of the first pressure plate. A channel is formed between the front and rear first limiting rods, the second limiting rod is provided symmetrically with the first limiting rod, and the connecting pipe is provided inside the channel.

[0007] As a further improvement of the utility model, the movable part is arranged at one end where the first limiting rod and the second limiting rod are close to each other, and the movable part includes a connecting tube sleeved on the outer surfaces of the first limiting rod and the second limiting rod and a spring arranged inside the connecting tube.

[0008] As a further improvement of the present invention, one end of the first limiting rod and the second limiting rod located inside the connecting tube is fixed with a limiting block, the size of the limiting block is adapted to the inner cavity of the connecting tube, and both ends of the spring are connected to the limiting block.

[0009] As a further improvement of the present invention, a protective pad and a protective handle are fixedly provided on the side of the first pressing plate and the second pressing plate that are away from each other, the protective pad is located between the protective handles, and the protective handles are in a U-shaped structure.

[0010] As a further improvement of the utility model, a roller is provided on the side where the first pressing plate and the second pressing plate are close to each other, and the roller includes a support leg and a leather wheel. One end of the support leg is fixed to one side of the first pressing plate or the second pressing plate, and the other end of the support leg is rotatably connected to the leather wheel, and the outer surface of the leather wheel is in contact with the connecting pipe.

[0011] As a further improvement of the present invention, the first pressing plate and the second pressing plate are both in an arc-shaped structure, and the connecting pipe is arranged around the first pressing plate and the second pressing plate.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] 1. The utility model uses a limiter to realize that the connecting pipe is wound around the outer surface of the limiter, and a longer connecting pipe is stored to prevent the connecting pipe from contacting other objects. After one end of the connecting pipe enters the channel of the first limit rod and the second limit rod, it passes through and is wound around the limiter in sequence. Under the action of spring compression, the first limit rod and the second limit rod move to the bottom, thereby moving the first pressure plate and the second pressure plate, so that the roller clamps the wound connecting pipe, and the connecting pipe is stored. When in use, one end of the connecting pipe can be pulled to use it.

[0014] 2. The utility model makes the rollers contact with the connecting pipe by arranging the rollers on the first pressing plate and the second pressing plate. In the process of pulling the connecting pipe, the rollers can be driven to rotate, thereby ensuring that the connecting pipe can be pulled more smoothly and preventing it from getting stuck. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0016] Figure 1 This is a schematic diagram of the overall front cross-sectional structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the three-dimensional structure of the limiter of the utility model;

[0018] Figure 3It is a schematic diagram of the top view of the limiter structure of the utility model.

[0019] In the figure: 1. Control handle;

[0020] 2. Connecting pipe;

[0021] 3. First limiting rod; 301. Second limiting rod;

[0022] 4. first pressing plate; 401. second pressing plate;

[0023] 5. Limit block;

[0024] 6. Connecting tube;

[0025] 7. Spring;

[0026] 8. Handlebar guard;

[0027] 9. Roller. DETAILED DESCRIPTION

[0028] The following will disclose multiple embodiments of the utility model with diagrams. For the purpose of clear description, many physical details will be described together in the following description. However, it should be understood that these physical details should not be used to limit the utility model. In other words, in some embodiments of the utility model, these physical details are not necessary. In addition, for the purpose of simplifying the diagram, some conventional structures and components will be depicted in a simple schematic manner in the diagram.

[0029] In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0030] See also Figure 1-3 The renal artery radiofrequency ablation catheter of the utility model, in the present application, includes a control handle 1 and a connecting tube 2 arranged at one end of the control handle 1, the outer surface of the connecting tube 2 is provided with a limiter, and the connecting tube 2 is located between the limiters; the limiter includes a pressure plate member, the pressure plate member includes a first pressure plate 4 and a second pressure plate 401 on one side of the first pressure plate 4, the first pressure plate 4 is located on the right side of the connecting tube 2 and the second pressure plate 401 is located on the left side of the first pressure plate 4, a spacing is set between the first pressure plate 4 and the second pressure plate 401, a limiting member is fixedly provided on the side where the first pressure plate 4 and the second pressure plate 401 are close to each other, a movable member is provided at one end of the limiting member, and the connecting tube 2 is arranged inside the spacing between the first pressure plate 4 and the second pressure plate 401, and is located inside the limiting member.

[0031] In this embodiment, the first pressure plate 4 and the second pressure plate 401 can be randomly distributed on the left and the right, and the first pressure plate 4 and the second pressure plate 401 are inclined in the same direction, so that the bending angle of the connecting tube 2 wrapped around the first pressure plate 4 and the second pressure plate 401 is more appropriate to prevent bending and jamming. The limiting member limits the connecting tube 2 so that the connecting tube 2 can be wrapped around the first pressure plate 4 and the second pressure plate 401 without falling off. Under the action of the movable member, the first pressure plate 4 and the second pressure plate 401 are brought close to each other, thereby clamping the connecting tube 2 and storing the longer connecting tube 2 to prevent the connecting tube 2 from contacting objects that it should not contact.

[0032] On the basis of the above embodiments, in this embodiment, the limiting member includes a first limiting rod 3 fixedly mounted on one side of the first pressure plate 4 and a second limiting rod 301 fixedly mounted on one side of the second pressure plate 401. Multiple first limiting rods 3 are provided, and multiple first limiting rods 3 are provided at the four corners of one side of the first pressure plate 4. A channel is formed between the front and rear first limiting rods 3. The second limiting rod 301 is symmetrically provided with the first limiting rod 3, and the connecting pipe 2 is provided inside the channel.

[0033] In this embodiment, the first limiting rod 3 and the second limiting rod 301 are each composed of four, wherein two first limiting rods 3 form a group, one group is arranged front and back, and a channel is formed between them, and the two groups of limiting rods are arranged up and down, located at the four corners of the rectangle, and the second limiting rod 301 and the first limiting rod 3 are symmetrically arranged and correspond to each other, so that the connecting tube 2 can enter the channel formed by the first limiting rod 3 and the second limiting rod 301, so as to facilitate the storage of the connecting tube 2.

[0034] Based on the above embodiments, in this embodiment, the movable part is arranged at one end where the first limiting rod 3 and the second limiting rod 301 are close to each other, and the movable part includes a connecting tube 6 which is sleeved on the outer surface of the first limiting rod 3 and the second limiting rod 301 and a spring 7 which is arranged inside the connecting tube 6.

[0035] In this embodiment, the positions of the first pressure plate 4 and the second pressure plate 401 can be changed under the action of the expansion and contraction of the spring 7. When the connecting tube 2 needs to be wound around the first pressure plate 4 and the second pressure plate 401, the first pressure plate 4 and the second pressure plate 401 are pulled down to stretch the spring 7. After the winding is completed, the spring 7 contracts, so that the first pressure plate 4 and the second pressure plate 401 clamp the connecting tube 2.

[0036] Based on the above embodiments, in this embodiment, a limit block 5 is fixedly provided at one end of the first limit rod 3 and the second limit rod 301 located inside the connecting tube 6. The size of the limit block 5 is adapted to the inner cavity of the connecting tube 6, and both ends of the spring 7 are connected to the limit block 5.

[0037] In this embodiment, the diameter of the limit block 5 is larger than the diameter of the first limit rod 3 and the second limit rod 301, and the size structure of the limit block 5 is adapted to the inner cavity of the connecting tube 6, thereby ensuring that the first limit rod 3 and the second limit rod 301 will not detach from the inside of the connecting tube 6, and ensuring that the first limit rod 3 and the second limit rod 301 move more smoothly in the connecting tube 6.

[0038] On the basis of the above-mentioned embodiment, in this embodiment, a protective pad and a protective handle 8 are fixedly provided on the side of the first pressing plate 4 and the second pressing plate 401 which are away from each other. The protective pad is located between the protective handles 8, and the protective handles 8 are in a U-shaped structure.

[0039] In this embodiment, it is convenient for the staff to hold the outer surfaces of the first pressing plate 4 and the second pressing plate 401 , so that the staff can pull the positions of the first pressing plate 4 and the second pressing plate 401 .

[0040] On the basis of the above embodiments, in this embodiment, a roller 9 is provided on the side where the first pressure plate 4 and the second pressure plate 401 are close to each other, and the roller 9 includes a support leg and a leather wheel. One end of the support leg is fixed to one side of the first pressure plate 4 or the second pressure plate 401, and the other end of the support leg is rotatably connected to the leather wheel, and the outer surface of the leather wheel is in contact with the connecting tube 2.

[0041] In this embodiment, the roller 9 is in contact with the connecting tube 2. During the process of pulling the connecting tube 2, the roller 9 can be driven to rotate, thereby ensuring that the connecting tube 2 can be pulled more smoothly and preventing it from getting stuck.

[0042] On the basis of the above-mentioned embodiment, in this embodiment, the first pressing plate 4 and the second pressing plate 401 are both in an arc-shaped structure, and the connecting pipe 2 is arranged around the first pressing plate 4 and the second pressing plate 401 .

[0043] In this embodiment, when the connecting tube 2 is wound around the first pressing plate 4 and the second pressing plate 401, it can fit the shape structure of the first pressing plate 4 and the second pressing plate 401, ensuring that the connecting tube 2 bends more naturally and preventing damage due to excessive bending.

[0044] When using the utility model: the connecting tube 2 is passed through the middle of the first limiting rod 3 and the second limiting rod 301, and the connecting tube 2 is wrapped around the first pressure plate 4 and the second pressure plate 401. Under the tension of the spring 7, the first limiting rod 3 and the second limiting rod 301 are pulled, so that the first pressure plate 4 and the second pressure plate 401 are moved, so that the roller 9 contacts the connecting tube 2 and clamps the connecting tube 2 for easy storage, and when the connecting tube 2 is pulled, the roller 9 is driven to rotate for easy pulling.

[0045] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the claims of the present invention.

Claims

1. A renal artery radiofrequency ablation catheter, comprising a control handle (1) and a connecting tube (2) arranged at one end of the control handle (1), characterized in that: The outer surface of the connecting pipe (2) is provided with a stopper, and the connecting pipe (2) is located between the stoppers; The limiter comprises a pressure plate component, the pressure plate component comprises a first pressure plate (4) and a second pressure plate (401) on one side of the first pressure plate (4), the first pressure plate (4) is located on the right side of the connecting tube (2) and the second pressure plate (401) is located on the left side of the first pressure plate (4), a spacing is set between the first pressure plate (4) and the second pressure plate (401), a limiter is fixedly provided on the side where the first pressure plate (4) and the second pressure plate (401) are close to each other, a movable part is provided at one end of the limiter, and the connecting tube (2) is arranged inside the spacing between the first pressure plate (4) and the second pressure plate (401), and is located inside the limiter.

2. A renal artery radiofrequency ablation catheter according to claim 1, characterized in that: The limiting member comprises a first limiting rod (3) fixedly arranged on one side of the first pressure plate (4) and a second limiting rod (301) fixedly arranged on one side of the second pressure plate (401). A plurality of first limiting rods (3) are provided. The plurality of first limiting rods (3) are provided at four corners of one side of the first pressure plate (4). A channel is formed between the front and rear first limiting rods (3). The second limiting rod (301) is symmetrically arranged with the first limiting rod (3), and the connecting pipe (2) is provided inside the channel.

3. A renal artery radiofrequency ablation catheter according to claim 2, characterized in that: The movable part is arranged at one end where the first limiting rod (3) and the second limiting rod (301) are close to each other, and the movable part comprises a connecting tube (6) sleeved on the outer surfaces of the first limiting rod (3) and the second limiting rod (301), and a spring (7) arranged inside the connecting tube (6).

4. A renal artery radiofrequency ablation catheter according to claim 3, characterized in that: A limiting block (5) is fixedly provided at one end of the first limiting rod (3) and the second limiting rod (301) located inside the connecting tube (6); the size of the limiting block (5) is adapted to the inner cavity of the connecting tube (6); and both ends of the spring (7) are connected to the limiting block (5).

5. The renal artery radiofrequency ablation catheter according to claim 1, characterized in that: A protective pad and a protective handle (8) are fixedly provided on the side of the first pressing plate (4) and the second pressing plate (401) that are away from each other. The protective pad is located between the protective handles (8), and the protective handles (8) are in a U-shaped structure.

6. The renal artery radiofrequency ablation catheter according to claim 1, characterized in that: A roller (9) is provided on one side of the first pressing plate (4) and the second pressing plate (401) that are close to each other. The roller (9) comprises a leg and a leather wheel. One end of the leg is fixedly arranged on one side of the first pressing plate (4) or the second pressing plate (401), and the other end of the leg is rotatably connected to the leather wheel. The outer surface of the leather wheel is in contact with the connecting pipe (2).

7. The renal artery radiofrequency ablation catheter according to claim 1, characterized in that: The first pressing plate (4) and the second pressing plate (401) are both in an arc-shaped structure, and the connecting pipe (2) is arranged around the first pressing plate (4) and the second pressing plate (401).

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