Radiofrequency ablation device for tumors

Abstract

The invention relates to a radiofrequency ablation device for tumors. The radiofrequency ablation device comprises a needle tube, a needle tip, a fixed handle, an electrode needle, an electrode pushing rod and a rotary rod, wherein the inner left part of the needle tube is fixedly provided with a cylindrical guiding part, the middle of the cylindrical guiding part is provided with a first channel along the axial direction, a plurality of second channels are arranged along the axial circumferential direction, and the left end of each second channel is outwards bent; the needle tip is of a cone shape, is fixedly arranged on the left end of the needle tube and is provided with a fourth channel and a fifth channel, wherein the fourth channel and the fifth channel independently correspond to the first channel and the second channel, a master electrode needle penetrates out of the tip end of the needle tip in a straight line way, and slave electrode needles penetrate out of the side surface of the needle tip to carry out outward divergent distribution; the fixed handle is integrally of a cylinder shape, and the left end of the fixed handle is fixedly connected with the needle tube; the electrode needle comprises the master electrode needle and the slave electrode needles, wherein the right end of the master electrode needle and the right ends of the slave electrode needles are fixedly connected with an electrode needle seat, the master electrode needle is a tube-shaped needle, and the electrode needle is electrically connected with an electrical plug; the left end of the electrode pushing rod is fixedly connected with the electrode needle seat; and the left end of the rotary rod is rotatably hinged to the right end of the electrode pushing rod.

Description

Technical field[0001]The present invention relates to a tumor radio frequency ablation device, which specifically belongs to the technical field of medical devices.Background technique[0002]RFR ablation, RFA is a thermocoagulant, which is a radio frequency alternating current of 460 to 500 kHz, and the charged particles in the surrounding tissue are oscillated through the radio frequency electrode needle, and the temperature can reach 50. ~ 110 ° C, the electrode surrounding tumor cells caused solidarity necrosis, thereby inactivating a new micro-invasive treatment of tumor cells, the degree of heat generation and current intensity and duration are positively correlated with impedance, and tissue The water content, tissue flow, and the speed of heating are closely related. Radio frequency ablation has a wide range of applications, small trauma, and exact curative effect. It can repeat multiple treatments, low cost, etc., for patients who are unable to accept or unwilling to accept s...

AI Technical Summary

Problems solved by technology

Due to the small cross-sectional area of ​​the existing radio frequency electrodes, the treatment range is limited, and the shape of the electrodes cannot meet the needs of most clinical cases, which limits its application, and with the increase in the number of uses, the needle tube is easy to fall off, affecting the progress of treatment

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