Endoscopic instrument with projection length adjusting member for the high frequency tool

摘要

An endoscopic instrument includes: a high-frequency knife (2) for carrying out incisional intervention; a wire (3) having a distal end connected to the high-frequency knife (2); an outer sheath (5) for allowing the wire (3) to pass therethrough; a main body having a proximal end of the sheath (5) fixed thereto; a first slider, capable of freely sliding on the main body, having the wire (3) fixed thereto; at least a stopper (7) projecting radially outward relative to the wire (3); a first abutment member (9) making contact with the stopper (7) and regulating distal sliding movement of the wire (3); and a projection-length-adjusting member (8), provided in the outer sheath (5), for regulating proximal sliding movement of the wire (3) by making contact with the stopper (7). This configuration allows the high-frequency knife (2) to be maintained at different projection lengths based on the stopper (7) making contact with the first abutment member (9) and the stopper (7) making contact with the projection-length-adjusting member (8).