High-frequency treatment instrument (10) is arranged and operated electrically conducting wire which is inserted so as to advance and retreat, a tip portion of the operation wire flexible tube that is inserted into a body cavity (50), the flexible tube (50) and the torque is rotating the operation wire to operate the treatment portion (60) by retracting operation of the operation wire is attached treatment portion for treating the affected area by application of the high-frequency current (60), the proximal end (50) the flexible tube I have the operating unit to rotate (60) Te a treatment unit, and (20). Body portion to be mounted (70) for supplying high frequency current code frequency current treatment unit (60) and (22), an operation unit (20) is provided rotatably on the shaft front end side body portion (22) and a retracting operation portion for advancing and retracting the operation wire is provided movably in the axial direction of the rotation operation portion for a torque rotating the operation wire Te (24), the base body portion (22) and (26).高周波処置具(10)は、体腔内に挿入される可撓管(50)と、可撓管(50)に進退自在に挿通された導電性の操作ワイヤと、操作ワイヤの先端部に配置され高周波電流の印加により患部を処置する処置部(60)と、可撓管(50)の基端部に付設され操作ワイヤを進退操作して処置部(60)を操作し操作ワイヤをトルク回転させて処置部(60)を回転させる操作部(20)と、を有する。操作部(20)は、処置部(60)に高周波電流を供給する高周波電流コード(70)が装着される本体部(22)と、本体部(22)の先端側に軸回転自在に設けられて操作ワイヤをトルク回転させる回転操作部(24)と、本体部(22)の基端側に軸方向に進退自在に設けられて操作ワイヤを進退させる進退操作部(26)と、を備える。
