A plasma surgical knife head and plasma surgical device

Abstract

A plasma surgical knife head and a plasma surgical device. The plasma scalpel head includes an excitation electrode, a return electrode, and a cable assembly connected with the excitation electrode and the return electrode. The return electrode is tubular, with a hollow surface, and an insulating layer is provided on the surface of the return electrode, and the insulating layer does not cover the cross section of the hollow part of the return electrode; the excitation electrode is columnar, with an insulating layer and at least two protrusions on the surface, and no insulating layer on the protrusion , the excitation electrode is inserted into the return electrode, and the protrusion is exposed from the hollow of the return electrode. Or, the return electrode is columnar, and is provided with an insulating layer, and there are N openings on the insulating layer to expose the return electrode; the excitation electrode is tubular, and there are N openings on the surface, and the size of the opening is larger than the size of the opening on the insulating layer of the return electrode. The return electrode is inserted into the excitation electrode, and each opening on the insulating layer of the return electrode is located in each opening on the excitation electrode. The area of ​​the plasma layer formed when the cutter head is working is relatively large, which improves the working efficiency of the cutter head.

Description

technical field [0001] The present application relates to the field of medical instruments, in particular to a plasma surgical knife head and a plasma surgical device. Background technique [0002] Low-temperature plasma radiofrequency ablation is a new technology developed on the basis of electrochemistry in recent years. It uses radio frequency to generate plasma at a relatively low temperature of 40-70 degrees to break the molecular bonds of tissues and vaporize tissues, so as to achieve tissue ablation. Functions such as cutting, ablation and hemostasis are increasingly used in clinical practice. The energy generated by the bipolar radio frequency converts the electrolyte between the radio frequency cutter head and the tissue into a thin layer of plasma. After the charged particles in the plasma are accelerated by the electric field, the energy is transferred to the tissue and the constituent cells in the target tissue are dissociated. The molecular bonds of the constit...

AI Technical Summary

Problems solved by technology

[0003] However, the current plasma scalpel has low working efficiency, which may lead to longer operation time and increase the difficulty of operation

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