Rotary liquid feeding type plasma operation electrode

Abstract

The invention relates to a plasma operation electrode, in particular to a rotary liquid feeding type plasma operation electrode. A protective jacket is made of an insulating material and is wrapped on a tubular external electrode, and the end of the tubular external electrode is exposed out of the protective jacket; an insulating internal electrode base is mounted at the end of the tubular external electrode; the internal electrode base is used for fixedly mounting an internal electrode and isolating the internal electrode from the external electrode; a drainage opening is formed in the internal electrode base and is communicated with a drainage pipe inside the external electrode; a spiral liquid feeding tank is arranged between the protective jacket and the tubular external electrode. The flow direction and flow field of liquid can be controlled by changing a spiral angle, the liquid flows along a spiral line due to an inertia effect after spraying out from a water injection port, and solution can be induced to enter an operation discharging area in a rotating mode, so that uniform and sufficient solution in the discharging area in the operation process is guaranteed, and the operation quality is improved. Meanwhile, without changing the structures of the tubular external electrode and the internal electrode, the processing difficulty and manufacturing cost of the plasma operation electrode can be reduced.

Description

technical field [0001] The invention relates to a plasma surgical electrode and belongs to the field of medical plasma surgical instruments. Background technique [0002] Low-temperature plasma ablation technology has been gradually applied to various fields of otolaryngology-head and neck surgery due to its advantages of safety, minimal invasiveness, simple operation, and less pain for patients. The electrolyte between the target tissue and the target tissue is converted into a low-temperature plasma state, and a highly concentrated plasma thin layer is formed at the front end of the surgical electrode. The strong electric field enables the free charged particles in the plasma thin layer to obtain sufficient energy and transfer the energy to The target tissue dissociates the molecular bonds that make up the cell components in the target tissue, disintegrates the cells in the target tissue in units of molecules, decomposes into carbohydrates and oxides, and causes the coagul...

AI Technical Summary

Problems solved by technology

Among them, whether the water injection structure is reasonable is the key issue that affects the solution delivery effect and flushing effect. At present, the product generally uses the cavity between the sheath and the tubular outer electrode as the liquid supply channel, and also uses the space between the tubular outer electrode and the internal suction tube. The cavity is used as a liquid supply channel, but there is no special consideration on the liquid supply channel for these two forms. There are few researches and reports on the liquid supply method of the plasma surgical electrode. In practical applications, the surgical fluid flows in through gravity. The liquid supply channel flows out through the water injection port of the liquid supply channel. When these two kinds of liquid supply channels are set up in clinical applications, problems of uneven liquid supply and unsmooth liquid flow will occur, which will affect the stability and efficiency of the operation.

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