Radiofrequency ablation electrode needle and manufacturing method thereof

Abstract

The invention relates to a radio frequency ablation electrode needle, which comprises an electrode and a handle; the external surface of the electrode is coated with an insulating coating; the electrode of the radio frequency ablation electrode needle comprises a first portion and a second portion connected with the first portion; the second portion comprises a radio frequency puncture portion; the second portion has a silicide film to reduce a puncture resistance of the radio frequency puncture portion; and the silicide film is a non-insulating layer. By silicicating the electrode, the problem of inaccurate positioning when puncturing a tumour phyma due to large electrode needle frictional force, and the problem of small radio frequency ablation scope because protein is adhered to the electrode needle to influence radio frequency current conducting in the electrode needle radio frequency ablation process are solved.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of medical devices, in particular to a radiofrequency ablation electrode needle. Background technique [0002] Radiofrequency ablation (radiofrequency ablation, RFA) is a kind of physical therapy that uses radiofrequency current to excite high-speed oscillations of ions in tissues to collide and rub against each other to generate high heat to dehydrate tumor tissue cells and tissues to form local coagulation necrosis to treat tumors. [0003] The radiofrequency ablation treatment of tumor also depends on the biological characteristics of the tumor tissue itself. Due to the anatomical and histological defects of tumor tissue, there are characteristics such as insufficient blood supply, hypoxia, partial warming, and heat resistance, which provide a theoretical basis for radiofrequency ablation therapy. Tumor tissue cannot dissipate heat after absorbing heat energy, and its internal tempe...

AI Technical Summary

Problems solved by technology

[0008] Aiming at the existing shortcomings, the present invention provides a radiofrequency ablation electrode needle to solve the problem of inaccurate positioning when puncturing a tumor mass due to the high friction force of the electrode needle

[0009] Further, the purpose of the present invention is to solve the problem that the radiofrequency ablation electrode needle does not penetrate enough depth into the tumor tissue

[0010] A further object of the present invention is to solve the problem that during the working process of the electrode needle, the protein will adhere to the electrode needle and affect the conduction of the radio frequency current, resulting in a small range of radio frequency ablation

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