Patent ID: 8025630

Claim:
A treating device comprising: a transmitting member having an end face at a distal end thereof for transmitting energy to living body tissue; an outer sheath through which the transmitting member is passed; and a grasping section supported at a tip end portion of the outer sheath so as to be capable of turning with respect to the transmitting member, wherein the grasping section allows the living body tissue to be grasped against the transmitting member, wherein a curved portion is formed on the transmitting member; and wherein an edge portion is formed by a tapered face protruding forwarding from the end face of the transmitting member and a bottom face of the transmitting member, wherein the tapered face and the bottom face cross each other at an acute angle is provided to at a tip end portion of the transmitting member, the edge portion being linearly formed along a width direction of the transmitting member, wherein the edge portion is orthogonal to two directions including an extending direction of the transmitting member and an opening closing direction of the grasping section with respect to the transmitting member, wherein the opening closing direction of the grasping section is orthogonal to the extending direction of the transmitting member, to perform dissecting treatment of the living body tissue in the width direction.