Patent ID: 8226646
Filing Date: 2012-07-24
Classification: A61B

Abstract:
1. A monopolar type high frequency treatment instrument for performing a high frequency treatment of a living tissue, the monopolar type high frequency treatment instrument comprising: an insertion portion comprising an electrical insulating member formed on the exterior of the insertion portion; and a treatment portion provided in connection with the insertion portion and provided with a treatment electrode including an incision electrode portion configured to perform an incision treatment of the living tissue and a coagulation electrode portion configured to perform a coagulation treatment of the living tissue, the monopolar type high frequency treatment electrode including on an outer circumferential surface side thereof an electrical insulating member, the incision electrode portion and the coagulation electrode portion having electrode surfaces which are exposed by the electrical insulating member, wherein the treatment electrode is configured to flow current through the living tissue from the electrode surface of one electrode portion which is one of the incision electrode portion and the coagulation electrode portion and which contacts a living tissue as a portion to be treated to a counter electrode plate which is a separate body from the treatment electrode and which is brought into surface contact with a body surface other than the portion to be treated.