Electrode rod for treating biological tissue

摘要

An electrode rod for treating a biological tissue is provided to properly carry out a surgical operation wherein a sufficient thermal shield is applied onto a core wire connected to an electrode at the root of the electrode. A heat resisting ceramic or polyimide non-metallic short tube 15 is loosely mounted onto the outer periphery of a small diameter metal core wire 14 (diameter, 0.7 mm or so) connected to an electromagnetic wave irradiating electrode 13 such that it covers the short tube at the root of the electrode 13 . The short tube 15 is fixed by a heat resisting coating layer 16 made of tetrafluoroethylene or the like. A rod-shaped rigid metal core wire 14 a having a relatively larger diameter is connected in a unified form to the small diameter metal core wire 14 and a heat resisting coating layer 16 a is also applied onto the core wire 14 a.