Radio frequency needle electrode structure for short-term implantation

Abstract

The invention discloses a radio frequency needle electrode structure for short-term implantation, which comprises an electrode tip, a hose, a connecting end electrode ring and an insulating part which are connected in sequence, a lead is connected between the electrode tip and the connecting end electrode ring; the temperature sensor is fixedly sealed in the electrode tip; the defects that an existing radio frequency electrode cannot be placed in a human body for a short time due to the fact that the outer diameter of the existing radio frequency electrode mostly adopts a metal tube hard electrode, repeated puncture is needed, and the comfort of a patient is poor are overcome; the diameter size is small, the operative wound is smaller, the patient feels comfortable, the device is soft and implantable, and the problem that the number of puncture times is too large due to periodic treatment is solved; meanwhile, the electrode is made of a flexible material, a temperature sensor is additionally arranged in the electrode, compared with a nerve stimulation electrode wire, larger energy can be output, and a more lasting curative effect is achieved under the assistance of the radio frequency heat effect.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and more particularly to a radio frequency needle electrode structure for short-term implantation. Background Art

[0002] Radiofrequency electrodes are surgical devices that introduce high-frequency energy into tissues, causing the tissue water molecules to oscillate and heat, resulting in aseptic necrosis of the target site while performing nerve regulation at the same time.

[0003] Neurostimulator electrode wire: The outer diameter is generally about 1mm and there are N wires inside. It is the component of the neurostimulator that conducts 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 wires, electrically stimulating the contacted nerve parts to treat or relieve the patient's disease; the existing neurostimulator electrode wire is mainly composed of catheters, electrode rings, electrode ring patches, wires and other parts. The application part is the electrode ring discharge to electrically stimulate the patient; although it can be used for short-term or long-term nerve stimulation, it cannot perform radio frequency treatment because it has no temperature sensor, and its stimulation energy is relatively small, and the effect cannot be guaranteed for a long time, so the patient needs to wear the device permanently, which greatly increases the risk of electrode wires in the body and increases patient discomfort; and the electrode processing technology is difficult and costly.

[0004] Cardiac radiofrequency electrode: The outer diameter is generally around 2mm, with N wires inside and a handle at the tail end for adjusting the bending of the head. The electrode catheter is delivered to a specific part of the heart cavity through veins or arteries, releasing radiofrequency current to cause local endocardial and subendocardial myocardial coagulative necrosis, thereby achieving the goal of blocking the abnormal conduction bundle and origin of rapid arrhythmias. Although it can be used for radiofrequency treatment, it is an interventional device, and at the same time, it has a large handle at the rear end, which makes it impossible for the puncture needle to be withdrawn from the human body, so that it cannot remain in the body and cannot be used for periodic treatment. The diameter size is mostly around 2.0mm, which is not suitable for minimally invasive treatments such as intraspinal.

[0005] The outer diameter of existing radio frequency electrodes is mostly made of metal tube hard electrodes, which makes it impossible to place them in the human body for a short period of time. Periodic treatment requires repeated punctures, which causes poor patient comfort. Summary of the invention

[0006] In view of this, the present invention provides a radio frequency needle electrode structure for short-term implantation, which overcomes the shortcomings of existing radio frequency electrodes that are mostly made of metal tube hard electrodes and cannot be placed in the human body for a short period of time, require repeated punctures, and have poor patient comfort; the diameter is small, the surgical trauma is smaller, the patient comfort is better, it is soft and implantable, and the problem of excessive puncture times caused by periodic treatment is reduced.

[0007] In order to achieve the above object, the present invention adopts the following technical solution: A radio frequency needle electrode structure for short-term implantation, comprising an electrode head, a hose, a connection end electrode ring and an insulating portion connected in sequence; A wire is connected between the electrode head and the connection end electrode ring; It also includes a temperature sensor, which is fixed and sealed in the electrode head.

[0008] Preferably, the hose is bonded to the electrode head via implantable glue.

[0009] Preferably, the hose is made of polytetrafluoroethylene, polyurethane, silicone or polyether block polyamide.

[0010] Preferably, the number of the connection end electrode rings is not less than three.

[0011] Preferably, one end of the wire is welded to the electrode head, and the other end is welded to the connecting end electrode ring.

[0012] Preferably, the temperature sensor is fixed and sealed in the electrode head by implantable glue.

[0013] Preferably, the temperature sensor is connected to the connection end electrode ring by welding.

[0014] Preferably, the tail of the insulating portion is sealed with implantable glue to form a sealing portion.

[0015] It can be seen from the above technical solutions that, compared with the prior art, the present invention discloses a radio frequency needle electrode structure for short-term implantation, which has the following beneficial effects: The present invention overcomes the shortcomings of existing radio frequency electrodes that are mostly made of metal tube hard electrodes, which make them incapable of being placed in the human body for a short period of time, require repeated punctures, and cause poor patient comfort. The electrode has a small diameter, less surgical trauma, better patient comfort, is soft and can be implanted, and reduces the problem of too many punctures due to periodic treatment. At the same time, the electrode itself is made of flexible material, and a temperature sensor is added inside. Compared with the nerve stimulation electrode wire, it can output greater energy and has a more lasting therapeutic effect with the assistance of radio frequency thermal effect.

[0016] The present invention solves the problem that the nerve stimulation electrode wire cannot measure temperature and cannot transmit radio frequency. Relying on the thermal effect of radio frequency treatment, compared with the nerve stimulation electrode wire, only short-term implantation treatment is required to achieve long-term effect; compared with the cardiac radio frequency electrode, the structure is simplified, the size is reduced, and the damage to the human body during puncture is reduced; at the same time, since the overall structure is a unified columnar structure before and after, the puncture needle can be withdrawn from the human body, and the electrode itself is soft and can be placed in the affected area of ​​the body for a short period of time, reducing the number of punctures; the electrode has a simple structure, is easy to use, has a small outer diameter, has less surgical trauma, and provides better patient comfort, which is conducive to production and processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] 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.

[0018] Figure 1 The accompanying drawing is a schematic diagram of the overall structure provided by the present invention.

[0019] in, 1. Electrode head; 2. Hose; 3. Connection end electrode ring; 4. Insulation part; 5. Temperature sensor; 6. Sealing glue sealing part. DETAILED DESCRIPTION

[0020] 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.

[0021] See also Figure 1 The embodiment of the present invention discloses a radio frequency needle electrode structure for short-term implantation, comprising an electrode head 1, a hose 2, a connection end electrode ring 3 and an insulating portion 4 connected in sequence; A wire is connected between the electrode head 1 and the connection end electrode ring 3; It also includes a temperature sensor 5 which is fixed and sealed in the electrode head 1 .

[0022] In order to further optimize the above technical solution, the hose 2 is bonded to the electrode head 1 by implantable glue.

[0023] Specifically, the material of the hose 2 is polytetrafluoroethylene, polyurethane, silicone or polyether block polyamide. The material of the soft hose 2 is not limited to polytetrafluoroethylene, polyurethane, silicone, pebax (polyether block polyamide), etc., which will not be repeated here.

[0024] Specifically, the number of the connection end electrode rings 3 is not less than three. In this embodiment, the number of the connection end electrode rings 3 is three, but is not limited to three, and can be more than one, depending on the specific situation, and is not limited here.

[0025] Specifically, one end of the wire is welded to the electrode head 1 , and the other end is welded to the connecting end electrode ring 3 .

[0026] In order to further optimize the above technical solution, the temperature sensor 5 is fixed and sealed in the electrode head 1 by means of implantable glue.

[0027] In order to further optimize the above technical solution, the temperature sensor 5 is connected to the connection end electrode ring 3 by welding.

[0028] In order to further optimize the above technical solution, the tail of the insulating part 4 is sealed with an implantable glue to form a sealing part 6 .

[0029] In the present invention, the electrode is divided into two ends, a radio frequency end and a connection end. The radio frequency end is used for energy output and temperature detection at the target point; the connection end is used for connecting to an energy output device.

[0030] The specific implementation method of the present invention is to use laser welding to weld the wire to the electrode head 1, and then use implantable glue to fix and seal the temperature sensor 5 in the electrode head 1; use implantable glue to bond the processed electrode to the hose 2, and after bonding, lead out the wire and the temperature sensor 5 from the tail end of the hose 2, and weld the wire and the temperature sensor 5 to the three connecting end electrode rings 3 respectively, and install the insulating part 4 in the middle at the same time. The insulating part 4 can be bonded or sleeved, etc., which is not limited here. Finally, use implantable glue to seal the tail of the insulating part 4 to form a sealing and sealing part 6 structure.

[0031] Among them, the electrode head 1 is used to output radio frequency energy to the tissue to achieve the treatment purpose; the temperature sensor 5 is used to monitor the temperature and energy output stroke closed loop; the wire is used to conduct radio frequency energy from the connection end electrode ring 3 to the electrode head 1; the hose 2 is used to protect internal parts, provide an externally sealed cavity, and provide a medical biocompatible environment; while providing a soft structure for the overall electrode, it connects the radio frequency end and the connection end; the material of the hose 2 is not limited to polytetrafluoroethylene, polyurethane, silicone and pebax, etc.; the insulating part 4 is used to isolate the multiple connection end electrode rings 3 at the connection end to achieve the effect of mutual insulation; the sealing glue sealing part 6 is used to finally isolate the internal and external spaces to prevent any unexpected liquid from entering the interior of the electrode.

[0032] 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.

[0033] 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 radiofrequency needle electrode structure for short-term implantation, characterized in that: It includes an electrode head, a hose, a connection end electrode ring and an insulating part connected in sequence; A wire is connected between the electrode head and the connection end electrode ring; It also includes a temperature sensor, which is fixed and sealed in the electrode head.

2. The radio frequency needle electrode structure for short-term implantation according to claim 1, characterized in that: The hose is bonded and connected to the electrode head via implantable glue.

3. The radio frequency needle electrode structure for short-term implantation according to claim 1, characterized in that: The hose is made of polytetrafluoroethylene, polyurethane, silicone or polyether block polyamide.

4. The radio frequency needle electrode structure for short-term implantation according to claim 1, characterized in that: The number of the connection end electrode rings is not less than three.

5. The radio frequency needle electrode structure for short-term implantation according to claim 1, characterized in that: One end of the wire is welded to the electrode head, and the other end is welded to the connecting end electrode ring.

6. The radio frequency needle electrode structure for short-term implantation according to claim 1, characterized in that: The temperature sensor is fixed and sealed in the electrode head by implantable glue.

7. The radio frequency needle electrode structure for short-term implantation according to claim 1, characterized in that: The temperature sensor is connected to the connection end electrode ring by welding.

8. The radio frequency needle electrode structure for short-term implantation according to claim 1, characterized in that: The tail of the insulating part is sealed with implantable glue to form a sealing part.

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