The working principle of high-frequency electrosurgical tungsten needle is based on the skin effect and proximity effect generated by high-frequency current on the surface of the metal tungsten electrode. When high-frequency current passes through the tungsten electrode, the current is concentrated on the surface layer of the electrode, so that the electrode generates high temperature when it contacts the tissue, achieving the purpose of cutting and cauterizing the tissue. At the same time, the proximity effect of high-frequency current generates a strong electric field around the electrode, which promotes the decomposition of water molecules in the tissue, produces hydrogen and oxygen, and thus helps tissue coagulation and hemostasis.
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