Patent ID: 8562604

Claim:
A bipolar high frequency treatment device comprising: a catheter tube insertable into a human body through a treatment device passage of an endoscope; a first forceps blade and a second forceps blade at the distal end of the catheter tube, wherein the first forceps blade and the second forceps blade can be opened and closed by operating from outside a human body; a support member for supporting the first forceps blade and the second forceps blade so that the blades are able to open and close; and a voltage supplier for supplying a high frequency voltage to the first forceps blade and the second forceps blade, wherein the first forceps blade comprises a first grip portion, a first pivot support portion coupled with a first wire transmitting an operating force from outside of a human body, a first supported portion located midway between the first grip portion and the first pivot support portion and pivotably supported by the support member, and the first forceps blade is made of an electrically conductive material; wherein the second forceps blade comprises a second grip portion, a second pivot support portion coupled with a second wire transmitting an operation force from outside a human body, a second supported portion located midway between the second grip portion and the second pivot support portion and pivotably supported by the support member, and the second forceps blade is made of an electrically conductive material; and wherein the support member is made of an insulating material, and comprises; a tube receiving portion formed in the shape of a cylinder, into which the distal end of the catheter tube is fitted; a pair of side portions separated and extended in the direction opposite the receiving space for the catheter tube in the tube receiving portion; and a separation element located between the side portions and having: a first receiving groove for receiving the first pivot support portion, a second receiving groove for receiving the second pivot support portion a central element with first and second opposite faces for separating the first receiving groove and the second receiving groove, the central element located at a distal end portion, opposite the tube receiving portion, of the support member, and a protruding portion extending toward the tube receiving portion of the support member, a proximal end of the protruding portion located beyond the first and second pivot support portions when the first and second forceps blades are in closed state.