Nerve stimulator electrode wire and preparation method thereof

Abstract

The invention discloses a nerve stimulator electrode wire which comprises a guide tube frame and two electrode parts symmetrically assembled at the two ends of the guide tube frame. The electrode component comprises a C-shaped electrode ring and a C-shaped patch matched with the C-shaped electrode ring; risks caused by ring pressure forging of the electrode ring are solved, the circular electrode ring is divided into two parts, namely the C-shaped electrode ring and the C-shaped patch, the electrode wire is welded to the C-shaped patch through electric resistance welding, then the patch is welded to the C-shaped electrode ring through laser, and due to the fact that the outer diameter of the C-shaped electrode ring is consistent with the outer diameter of the electrode, ring pressure forging is not needed; therefore, risks caused by annular pressure satin beating are avoided, and the structure improves the connection reliability compared with an annular pressure forging process.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and more particularly to a neurostimulator electrode lead and a preparation method thereof. Background Art

[0002] The outer diameter of the neurostimulator electrode wire is generally around 1mm and has N wires inside. It is the component of the neurostimulator that transmits the current to the patient's treatment position. The host releases electrical signals according to the set channel and rhythm, and transmits them to the patient's nerves through the electrode wire, electrically stimulating the contacted nerve parts to treat or alleviate the patient's disease.

[0003] The existing neurostimulator electrode wire is mainly composed of a catheter, a ring electrode, a wire and the like, and its application part is to perform electrical stimulation treatment on the patient by discharge of the electrode ring.

[0004] The current process for manufacturing electrode wires for neurostimulators is to make an intermediate catheter, and the structures at both ends of the catheter are formed into a skeleton through mold opening and injection molding. The three parts are hot-melt-jointed to form a whole. The wires are then led out from the slots of the injection-molded skeleton, and the wires are connected to the inside or end face of the platinum-iridium ring by resistance welding or laser welding. The electrode ring is then put on the skeleton and forged to make it consistent with the outer diameter of the catheter, and finally glue is poured to form the overall structure.

[0005] The electrode rings and catheters in the existing neurostimulator electrode wires are made by the ring pressing forging process. The electrode rings with welded wires need to be ring pressed to make the outer diameter of the electrode ring consistent with the outer diameter of the injection-molded frame and catheter. However, the ring pressing forging process may bring the risk of the wires and electrode rings loosening or falling off. Summary of the invention

[0006] In view of this, the present invention provides a neurostimulator electrode lead and a preparation method thereof, aiming to solve the above technical problems.

[0007] In order to achieve the above object, the present invention adopts the following technical solution: A neurostimulator electrode lead comprises a catheter frame and two electrode components symmetrically assembled at two ends of the catheter frame.

[0008] Preferably, the electrode component includes a C-shaped electrode ring and a C-shaped patch matched with the C-shaped electrode ring.

[0009] Preferably, the C-shaped electrode ring is sleeved with the catheter frame.

[0010] Preferably, the C-shaped electrode ring is connected to the C-shaped patch by welding.

[0011] Preferably, it further comprises an electrode wire, one end of which is welded to the C-shaped patch, and the other end of which is inserted into the catheter frame.

[0012] The present invention provides a method for preparing a neurostimulator electrode wire, comprising the following steps: S1. Prepare a catheter frame, wherein both ends of the catheter frame have injection molded frames; S2. Put C-shaped electrode rings on both ends of the catheter frame; S3, welding one end of the electrode wire to the C-shaped patch, and inserting the other end into the catheter frame; S4, aligning the C-shaped patch and the C-shaped electrode ring, and laser welding multiple points on the butt joint surface to ensure a reliable connection; S5. Place the components assembled in step S4 into a tooling that matches the outer diameter of the catheter rack, and fill the inside of the tooling with glue to form an integral structure, thereby completing the preparation of the electrode wire of the neurostimulator.

[0013] It can be seen from the above technical solutions that, compared with the prior art, the present invention discloses a neurostimulator electrode lead and a preparation method thereof, which has the following beneficial effects: The present invention solves the risks caused by ring pressing and forging of the electrode ring. The circular electrode ring is divided into two parts, a C-shaped electrode ring and a C-shaped patch. The electrode wire is welded to the C-shaped patch by resistance welding, and then the patch is laser welded to the C-shaped electrode ring. Since the outer diameters of the C-shaped electrode ring and the electrode are consistent, ring pressing and forging are not required, thereby avoiding the risks caused by ring pressing and forging. This structure improves the reliability of the connection compared to the ring pressing and forging process. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0015] Figure 1 The accompanying drawing is a schematic diagram of the overall structure provided by the present invention; Figure 2 The accompanying drawing is a schematic diagram of the structure of the catheter frame provided by the present invention; in, 1. Catheter holder; 2. Electrode component; 3. C-shaped electrode ring; 4. C-shaped patch; 5. Electrode wire. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] See also Figure 1-2 The embodiment of the present invention discloses a neurostimulator electrode lead, including a catheter frame 1 and two electrode components 2 symmetrically assembled at two ends of the catheter frame 1.

[0018] In order to further optimize the above technical solution, the electrode component 2 includes a C-shaped electrode ring 3 and a C-shaped patch 4 adapted to the C-shaped electrode ring 3. The C-shaped electrode ring 3 is a C-shaped electrode ring 3 with a groove, and the C-shaped patch 4 is a C-shaped patch 4 with an electrode ring claw. The C-shaped electrode ring 3 with a groove and the C-shaped patch 4 with an electrode ring claw are adapted to each other and can be assembled and aligned to form an integral structure.

[0019] In order to further optimize the above technical solution, the C-shaped electrode ring 3 is sleeved with the catheter frame 1. The catheter frame 1 is a catheter with injection-molded frames at both ends. The process of forming the injection-molded frames at both ends of the catheter is an existing conventional technology and will not be repeated here.

[0020] In order to further optimize the above technical solution, the C-shaped electrode ring 3 is welded to the C-shaped patch 4. Specifically, the electrode ring with claws C-shaped patch 4 and the C-shaped electrode ring with grooves are assembled and aligned, and then laser welded at two or more points on the butt joint surface to make them reliably connected; the structure of the C-shaped electrode ring with grooves 3 and the C-shaped patch 4 with claws of the electrode ring avoids the problem of difficulty in aligning the two C-shaped butt joints.

[0021] In order to further optimize the above technical solution, an electrode wire 5 is also included. One end of the electrode wire 5 is welded to the C-shaped patch 4, and the other end thereof is inserted into the catheter frame 1.

[0022] An embodiment of the present invention provides a method for preparing a neurostimulator electrode wire, comprising the following steps: S1, preparing a catheter frame 1, wherein both ends of the catheter frame 1 have injection molded frames; S2, respectively putting C-shaped electrode rings 3 on both ends of the catheter frame 1; wherein both ends of the catheter frame 1 have injection-molded frames, and the C-shaped electrode rings 3 are put on the notches of the injection-molded frames; S3, welding one end of the electrode wire 5 to the C-shaped patch 4, and inserting the other end into the catheter frame 1; S4, aligning the C-shaped patch 4 and the C-shaped electrode ring 3, and laser welding multiple points on the butt joint surface to make them reliably connected; wherein, other required parts can be installed inside the assembled assembly; S5. Place the components assembled in step S4 into a tooling that matches the outer diameter of the catheter rack 1, and fill the inside of the tooling with glue to form an integral structure, thereby completing the preparation of the electrode wire of the neurostimulator.

[0023] The two ends of the neurostimulator electrode wire are the stimulation end and the connection end. The electrode rings at the two ends are assembled on the catheter to form a whole. The electrode rings at the two ends have the same structure and process.

[0024] The present invention solves the risks caused by ring pressing and forging of the electrode ring. The circular electrode ring is divided into two parts, a C-shaped electrode ring 3 and a C-shaped patch 4. The electrode wire 5 is welded to the C-shaped patch 4 by resistance welding, and then the patch is laser welded to the C-shaped electrode ring 3. Since the outer diameters of the C-shaped electrode ring 3 and the electrode are consistent, ring pressing and forging are not required, thereby avoiding the risks caused by ring pressing and forging. This structure improves the reliability of the connection compared to the ring pressing and forging process.

[0025] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0026] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A neurostimulator electrode lead, characterized in that: The invention comprises a catheter frame and two electrode components symmetrically assembled at two ends of the catheter frame.

2. A neurostimulator electrode lead according to claim 1, characterized in that: The electrode component includes a C-shaped electrode ring and a C-shaped patch matched with the C-shaped electrode ring.

3. A neurostimulator electrode lead according to claim 2, characterized in that: The C-shaped electrode ring is sleeved with the catheter frame.

4. A neurostimulator electrode lead according to claim 2, characterized in that: The C-shaped electrode ring is connected to the C-shaped patch by welding.

5. A neurostimulator electrode lead according to claim 2, characterized in that: It also includes an electrode wire, one end of which is welded to the C-shaped patch, and the other end of which is inserted into the catheter frame.

6. A method for preparing a neurostimulator electrode wire, characterized in that: The following steps are involved: S1. Prepare a catheter frame, wherein both ends of the catheter frame have injection molded frames; S2. Put C-shaped electrode rings on both ends of the catheter frame; S3, welding one end of the electrode wire to the C-shaped patch, and inserting the other end into the catheter frame; S4, aligning the C-shaped patch and the C-shaped electrode ring, and laser welding multiple points on the butt joint surface to ensure a reliable connection; S5. Place the components assembled in step S4 into a tooling that matches the outer diameter of the catheter rack, and fill the inside of the tooling with glue to form an integral structure, thereby completing the preparation of the electrode wire of the neurostimulator.

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