Patent ID: 7094232

Claim:
An electrode rod for treating a biological tissue comprising: a metal core wire having a given diameter and being capable of being used in a predetermined bent shape; an electromagnetic wave irradiating electrode connected at a root thereof to an end tip of the metal core wire; a heat resisting non-metallic short tube loosely mounted onto the outer periphery of said metal core wire so as to cover the root of said electromagnetic wave irradiating electrode; a first heat resisting coating layer coating the outer periphery of said short tube at the distal end thereof with respect to said electromagnetic wave irradiating electrode and coating the outer periphery of said metal core wire to fix said short tube; a rod-shaped rigid metal core wire having a relatively larger diameter than the given diameter of the metal core wire, said rigid metal core wire being integrally connected to said metal core wire; and a second heat resisting coating layer integrally connected to said first heat resisting coating layer and coating the outer periphery of said rod-shaped rigid metal core wire, except the outer periphery of a metallic surface at the proximal end thereof.