A Radiofrequency Ablation Electrode Needle with Multi-Dimensional Neural Monitoring

Abstract

A radiofrequency ablation electrode needle with multi-dimensional nerve monitoring, comprising a nerve monitoring flexible electrode, a radiofrequency thermocoagulation electrode, and three knob modules for adjusting the angle of the nerve monitoring flexible electrode. The X-axis rotation knob, Y-axis rotation knob, and Z-axis telescopic knob are respectively arranged on a triangular fixing seat. The X-axis rotation knob, Y-axis rotation knob, and Z-axis telescopic knob are respectively connected to the nerve monitoring flexible electrode through control cables. The front end of the triangular fixing seat is fixedly connected to the radiofrequency thermocoagulation electrode, and the rear end is docked with a cable. Compared with the prior art, the multi-dimensionally extendable electrode head of the present invention penetrates from the head end of the radiofrequency thermocoagulation electrode, and can achieve deflection in the front, back, left, and right directions in the X / Y directions and telescoping in the Z direction. The detection position of the flexible electrode head can be controlled by the X / Y / Z knobs. The monitoring electrode of the present invention can comprehensively monitor the ablated nerve lesion part, and to a certain extent, avoid the problems of incomplete nerve destruction or excessive nerve destruction.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly relates to a radiofrequency ablation electrode needle with multi-dimensional nerve monitoring. Background Art

[0002] Radiofrequency treatment technology is to accurately output ultra-high frequency radio waves through special equipment and puncture needles to act on local tissues, playing a role in thermal coagulation, cutting or nerve regulation, so as to treat pain diseases. Since the 19th century, there have been animal experiments using electric current to damage the nervous system. By the mid-20th century, the first commercially applicable radiofrequency generator was manufactured, enabling the radiofrequency treatment technology to be applied clinically. After continuous improvement, the clinical application scope of radiofrequency treatment technology has been continuously expanded and has now become an effective means for treating various intractable pains. In traditional radiofrequency ablation surgeries, the process of puncturing the radiofrequency to the lesion requires doctors to perform the puncture based on experience. The accuracy depends on the doctor's experience and varies greatly. Moreover, some lesions are not clearly visible to the naked eye under ultrasound and are very difficult to puncture. Even when using some navigation visual devices for assistance during radiofrequency ablation, only the impedance display value on the radiofrequency host can be used to indirectly judge whether the nerve destruction is completed. For incomplete or excessive nerve destruction, there is no intuitive signal detection and judgment. More seriously, if the radiofrequency thermocoagulation destruction is excessive, there may be a risk of loss of function of the surrounding nerves. Summary of the Invention

[0003] In view of the above-mentioned defects in the prior art, the present invention provides a radiofrequency ablation electrode needle with multi-dimensional nerve monitoring as follows:

[0004] The technical solution of the present invention is realized as follows:

[0005] A radiofrequency ablation electrode needle with multi-dimensional nerve monitoring includes a nerve monitoring flexible electrode, a radiofrequency thermocoagulation electrode, a knob module for adjusting the angle of the nerve monitoring flexible electrode, and a cable. The knob module includes a triangular fixed seat, an X-axis rotation knob, a Y-axis rotation knob, and a Z-axis telescopic knob. The X-axis rotation knob, the Y-axis rotation knob, and the Z-axis telescopic knob are respectively arranged on the triangular fixed seat. The X-axis rotation knob, the Y-axis rotation knob, and the Z-axis telescopic knob are respectively connected to the nerve monitoring flexible electrode through control cables. The front end of the triangular fixed seat is fixedly connected to the radiofrequency thermocoagulation electrode, and the rear end is docked with the cable.

[0006] Preferably, a guide rail device is arranged inside the radiofrequency thermocoagulation electrode. The nerve monitoring flexible electrode is installed inside the radiofrequency thermocoagulation electrode through the guide rail device and is isolated from it. The nerve monitoring flexible electrode extends out of the front end of the radiofrequency thermocoagulation electrode.

[0007] Preferably, the control cable includes an X-axis cable, a Y-axis cable, and a Z-axis cable. X-axis cable fixing points, X-axis corner buckles, Y-axis cable fixing points, and Y-axis corner buckles are respectively arranged at the front end of the nerve monitoring flexible electrode. One end of the X-axis cable is wound around the X-axis rotary knob, and the other end passes through the X-axis corner buckle and is fixed at the X-axis cable fixing point. One end of the Y-axis cable is wound around the Y-axis rotary knob, and the other end passes through the Y-axis corner buckle and is fixed at the Y-axis cable fixing point. One end of the Z-axis cable is wound around the Z-axis telescopic knob, and the other end is connected to the side of the rear end of the nerve monitoring flexible electrode. A wire tube is arranged inside the radiofrequency thermocoagulation electrode, and the X-axis cable, Y-axis cable, and Z-axis cable are arranged through the wire tube.

[0008] Preferably, a thermocouple is arranged at the front end inside the radiofrequency thermocoagulation electrode.

[0009] Preferably, the bottom surface of the triangular fixing seat is an equilateral triangle. The triangular fixing seat includes an electrode communication socket, a triangular fixing seat body, and a cone with a 6% Luer taper. The X-axis rotary knob, Y-axis rotary knob, and Z-axis telescopic knob are respectively located at the three corner tips of the bottom surface of the triangular fixing seat. The electrode communication socket is located at the center of the triangular fixing seat. There is a cavity inside the triangular fixing seat. A cone with a 6% Luer taper is arranged at the top of the triangular fixing seat, and the radiofrequency thermocoagulation electrode is inserted into the cone with a 6% Luer taper, and the connection part is sealed and assembled with glue.

[0010] Preferably, electrode communication plugs and radiofrequency host connection plugs are respectively arranged at both ends of the cable. The electrode communication plug is used to connect the electrode communication socket of the triangular fixing seat, and the radiofrequency host connection plug is used to connect the radiofrequency host.

[0011] Preferably, the electrode communication plug is in a semi-circular shape, and the electrode communication socket is in a semi-circular shape.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] For the radiofrequency ablation electrode needle with multi-dimensional nerve monitoring of the present invention, a monitoring electrode with multi-dimensional extensibility is placed inside the radiofrequency thermocoagulation electrode. The electrode head with multi-dimensional extensibility penetrates out from the head end of the radiofrequency thermocoagulation electrode, and can realize the front-back, left-right deflection in the X / Y directions, and the telescopic movement in the Z direction. The detection position of the flexible electrode head can be controlled by the X / Y / Z knobs. The multi-dimensionally extensible nerve monitoring flexible electrode and the radiofrequency thermocoagulation electrode are independently insulated from each other to prevent the flexible electrode from discharging and ablating after conducting electricity. The metal electrode sheet of the multi-dimensionally extensible nerve monitoring flexible electrode is heat-insulated from the radiofrequency thermocoagulation electrode to prevent heat conduction to the monitoring area. The monitoring electrode of the present invention can comprehensively monitor the ablated nerve lesion part, and to a certain extent, avoids the problems of incomplete nerve destruction or excessive nerve destruction. Brief Description of the Drawings

[0014] Figure 1 It is a schematic structural diagram of the radiofrequency ablation electrode needle with multi-dimensional nerve monitoring of the present invention;

[0015] Figure 2 It is a schematic structural diagram of the nerve monitoring flexible electrode and the radiofrequency thermocoagulation electrode (front end) of the present invention;

[0016] Figure 3 It is a schematic structural diagram of the triangular fixing seat of the present invention;

[0017] Figure 4 It is a schematic diagram of the Z-axis rotation knob controlling the elongation of the nerve monitoring flexible electrode of the present invention;

[0018] Figure 5 It is a schematic diagram of the Z-axis rotation knob controlling the retraction of the nerve monitoring flexible electrode of the present invention;

[0019] Figure 6 It is a schematic diagram of the X-axis rotation knob controlling the deflection and bending of the nerve monitoring flexible electrode along the X-axis of the present invention;

[0020] Figure 7 It is a schematic diagram of the Y-axis rotation knob controlling the deflection and bending of the nerve monitoring flexible electrode along the Y-axis of the present invention.

[0021] In the figure: nerve monitoring flexible electrode 100, radiofrequency thermocoagulation electrode 200, cable 300, electrode communication plug 310, radiofrequency host connection plug 320, triangular fixing seat 410, electrode communication socket 411, triangular fixing seat body 412, vertebral body 413 with a 6% Luer taper, X-axis rotation knob 420, X-axis cable fixing point 421, X-axis corner buckle 422, Y-axis rotation knob 430, Y-axis cable fixing point 431, Y-axis corner buckle 432, Z-axis telescopic knob 440, control cable 500, guide rail device 600, wire tube 700, thermocouple 800. Detailed Embodiment

[0022] Next, the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention.

[0023] As Figures 1 to 3As shown in the figure, a radiofrequency ablation electrode needle with multi-dimensional nerve monitoring includes a nerve monitoring flexible electrode 100, a radiofrequency coagulation electrode 200, a knob module for adjusting the angle of the nerve monitoring flexible electrode 100, and a cable 300. The knob module includes a triangular fixing base 410, an X-axis rotation knob 420, a Y-axis rotation knob 430, and a Z-axis telescopic knob 440. The X-axis rotation knob 420, Y-axis rotation knob 430, and Z-axis telescopic knob 440 are respectively arranged on the triangular fixing base 410. The X-axis rotation knob 420, Y-axis rotation knob 430, and Z-axis telescopic knob 440 are respectively connected to the nerve monitoring flexible electrode 100 through control pull wires 500. The front end of the triangular fixing base 410 is fixedly connected to the radiofrequency coagulation electrode 200, and the rear end is docked with the cable 300. A guide rail device 600 is arranged inside the radiofrequency coagulation electrode 200. The nerve monitoring flexible electrode 100 is installed inside the radiofrequency coagulation electrode 200 through the guide rail device 600 and is isolated from it. The guide rail device 600 is used for the Z-axis sliding of the electrode head of the nerve monitoring flexible electrode 100, and at the same time plays a role in heat insulation and insulation for the nerve monitoring flexible electrode 100. The nerve monitoring flexible electrode 100 extends out of the front end of the radiofrequency coagulation electrode 200.

[0024] The control pull wire 500 includes an X-axis pull wire, a Y-axis pull wire, and a Z-axis pull wire. The front end of the nerve monitoring flexible electrode 100 is respectively provided with an X-axis pull wire fixing point 421, an X-axis corner buckle 422, a Y-axis pull wire fixing point 431, and a Y-axis corner buckle 432. One end of the X-axis pull wire is wound around the X-axis rotation knob 420, and the other end passes through the X-axis corner buckle 422 and is fixed at the X-axis pull wire fixing point 421. One end of the Y-axis pull wire is wound around the Y-axis rotation knob 430, and the other end passes through the Y-axis corner buckle 432 and is fixed at the Y-axis pull wire fixing point 431. One end of the Z-axis pull wire is wound around the Z-axis telescopic knob 440, and the other end is connected to the side of the rear end of the nerve monitoring flexible electrode 100. A wire conduit 700 is arranged inside the radiofrequency coagulation electrode 200. The X-axis pull wire, Y-axis pull wire, and Z-axis pull wire are arranged through the wire conduit 700.

[0025] A thermocouple 800 is arranged at the front end inside the radiofrequency coagulation electrode 200. The thermocouple 800 is used to detect the ablation temperature near the radiofrequency coagulation electrode 200.

[0026] The bottom surface of the triangular fixing base 410 is an equilateral triangle. The triangular fixing base 410 includes an electrode communication socket 411, a triangular fixing base body 412, and a vertebral body 413 with a 6% Luer taper. The X-axis rotation knob 420, Y-axis rotation knob 430, and Z-axis telescopic knob 440 are respectively located at the three corner tops of the bottom surface of the triangular fixing base body 412. The cranks of the three knobs are fixed respectively by a nut locking method and are sealed with UV glue. The front surface of each knob forms a 90° angle with the triangular fixing base 410, and the 3 knobs form a 120° angle respectively; the surface of the knob panel is engraved with the convex letters "X / Y / Z"; the knob can be rotated clockwise or counterclockwise and has a stop position. The electrode communication socket 411 is located at the center position of the triangular fixing base body 412. There is a cavity inside the triangular fixing base body 412 for installing parts. It is composed of an upper cover and a lower cover and can be assembled by snap-fastening. The top of the triangular fixing base 410 is provided with a vertebral body 413 with a 6% Luer taper. The radiofrequency ablation electrode 200 is inserted into the vertebral body 413 with a 6% Luer taper, and the connection part is sealed and assembled with glue.

[0027] Both ends of the cable 300 are respectively provided with an electrode communication plug 310 and a radiofrequency host connection plug 320. The electrode communication plug 310 is used to connect the electrode communication socket 411 of the triangular fixing base 410, and the radiofrequency host connection plug 320 is used to connect the radiofrequency host.

[0028] The electrode communication plug 310 is semi-circular, the electrode communication socket 411 is semi-circular, the electrode communication plug 310 and the electrode communication socket 411 are matched, and the electrode communication socket 411 is at the center position of the triangular fixing base 410 and has copper pin female pins for connection inside.

[0029] The specific steps for the X-axis rotation knob 420, Y-axis rotation knob 430, and Z-axis telescopic knob 440 to drive the angle adjustment or telescopic adjustment of the nerve monitoring flexible electrode 100 are as follows:

[0030] (1) As Figure 4 、 Figure 5 shown, by rotating the Z-axis rotation knob clockwise or counterclockwise, the nerve monitoring flexible electrode 100 can be controlled to extend or shorten along the Z-axis;

[0031] (2) As Figure 6 shown, by rotating the X-axis rotation knob clockwise or counterclockwise, the nerve monitoring flexible electrode 100 can be controlled to deflect and bend along the X-axis;

[0032] (3) As Figure 7 shown, by rotating the Y-axis rotation knob clockwise or counterclockwise, the nerve monitoring flexible electrode 100 can be controlled to deflect and bend along the Y-axis.

[0033] The usage method of the present invention is as follows:

[0034] Use a puncture needle to puncture to the area to be treated. Insert the radiofrequency ablation electrode with multiple dimensions and the flexible nerve monitoring electrode into the working area through the puncture needle cannula, and observe under CT whether the accurate position has been reached.

[0035] Adjust the flexible nerve monitoring electrode through the Z knob to extend it to the nerve to be monitored, and adjust the deflection angle of the monitoring probe through the X / Y knob to make it reach the optimal monitoring position.

[0036] Start radiofrequency ablation on the affected area, and observe the pain signals returned by the monitored nerve to judge how to perform radiofrequency ablation.

[0037] Based on the structure and usage method of the present invention, it can be known that the radiofrequency ablation electrode needle with multi-dimensional nerve monitoring of the present invention has a monitoring electrode with multi-dimensional extension placed inside the radiofrequency thermocoagulation electrode. The multi-dimensionally extended electrode head penetrates out from the head end of the radiofrequency thermocoagulation electrode, and can achieve deflection in the front, back, left, and right directions in the X / Y directions and telescoping in the Z direction. The detection position of the flexible electrode head can be controlled through the X / Y / Z knobs; the multi-dimensionally extended flexible nerve monitoring electrode and the radiofrequency thermocoagulation electrode are independently insulated from each other to prevent the flexible electrode from discharging and ablating after conducting electricity; the metal electrode sheet of the multi-dimensionally extended flexible nerve monitoring electrode is heat-insulated from the radiofrequency thermocoagulation electrode to prevent heat conduction to the monitoring area. The monitoring electrode of the present invention can comprehensively monitor the ablated nerve lesion part, and to a certain extent, avoid the problems of incomplete nerve destruction or excessive nerve destruction.

Claims

1. A radiofrequency ablation electrode needle with multi-dimensional nerve monitoring, characterized in that, It includes a neural monitoring flexible electrode, a radiofrequency thermocoagulation electrode, a knob module for adjusting the angle of the neural monitoring flexible electrode, and a cable. The knob module includes a triangular fixing base, an X-axis rotation knob, a Y-axis rotation knob, and a Z-axis telescopic knob. The X-axis rotation knob, Y-axis rotation knob, and Z-axis telescopic knob are respectively arranged on the triangular fixing base. The X-axis rotation knob, Y-axis rotation knob, and Z-axis telescopic knob are respectively connected to the neural monitoring flexible electrode through control cables. The front end of the triangular fixing base is fixedly connected to the radiofrequency thermocoagulation electrode, and the rear end is docked with the cable. A guide rail device is arranged inside the radiofrequency thermocoagulation electrode. The neural monitoring flexible electrode is installed inside the radiofrequency thermocoagulation electrode through the guide rail device and is isolated from it. The neural monitoring flexible electrode extends out of the front end of the radiofrequency thermocoagulation electrode. A thermocouple is arranged at the front end inside the radiofrequency thermocoagulation electrode. The bottom surface of the triangular fixing base is an equilateral triangle. The triangular fixing base includes an electrode communication socket, a triangular fixing base body, and a cone with a 6% Luer taper. The X-axis rotation knob, Y-axis rotation knob, and Z-axis telescopic knob are respectively located at the three corner tips of the bottom surface of the triangular fixing base. The electrode communication socket is located at the center of the triangular fixing base. There is a cavity inside the triangular fixing base. The top end of the triangular fixing base is provided with a cone with a 6% Luer taper. The radiofrequency thermocoagulation electrode is inserted into the cone with a 6% Luer taper, and the connection part is sealed and assembled with glue.

2. The radiofrequency ablation electrode needle with multi-dimensional nerve monitoring according to claim 1, characterized in that, The control cables include an X-axis cable, a Y-axis cable, and a Z-axis cable. The front end of the neural monitoring flexible electrode is respectively provided with an X-axis cable fixing point, an X-axis corner buckle, a Y-axis cable fixing point, and a Y-axis corner buckle. One end of the X-axis cable is wound around the X-axis rotation knob, and the other end passes through the X-axis corner buckle and is fixed at the X-axis cable fixing point. One end of the Y-axis cable is wound around the Y-axis rotation knob, and the other end passes through the Y-axis corner buckle and is fixed at the Y-axis cable fixing point. One end of the Z-axis cable is wound around the Z-axis telescopic knob, and the other end is connected to the side of the rear end of the neural monitoring flexible electrode. A wire conduit is arranged inside the radiofrequency thermocoagulation electrode. The X-axis cable, Y-axis cable, and Z-axis cable are arranged through the wire conduit.

3. The radiofrequency ablation electrode needle with multi-dimensional nerve monitoring according to claim 1, characterized in that, Electrode communication plugs and radiofrequency host connection plugs are respectively arranged at both ends of the cable. The electrode communication plug is used to connect the electrode communication socket of the triangular fixing base, and the radiofrequency host connection plug is used to connect the radiofrequency host.

4. The radiofrequency ablation electrode needle with multi-dimensional nerve monitoring according to claim 3, characterized in that The electrode communication plug is semi-circular, and the electrode communication socket is semi-circular.

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