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In infrared contact coagulation the tissue is coagulated not by means of an electric current but with infrared radiation. In treatment mechanical pressure and radiation energy are applied simultaneously. The process of electrocoagulation used to date is based on the heat of resistance (joule heat) produced when high-frequency currents flow through body tissue. This requires two electrodes – one inactive, with a large surface area and usually applied to a region on the upper leg, and one small, active, operating electrode. A basic shortcoming of this method is the adhesion of the metal electrod
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