PROBLEM TO BE SOLVED: To solve the following problem: when a user wants to rotate the whole of the tubing of a high frequency treatment instrument, the operator needs to release the handle once and again grip the handle after rotating it, so that continuous operation of the instrument is prevented.SOLUTION: A high frequency treatment instrument comprises: a flexible tube to be inserted into a body cavity an operation wire freely retractably inserted into the flexible tube a treating part which is disposed at a distal end side of the operation wire and treats a tissue of a living body by application of a high frequency current a main body part for fixing a distal end side of the flexible tube a slider fixing part for fixing a proximal end side of the operation wire led out of the proximal end of the flexible tube and for axially sliding the operation wire with respect to the main body part and a slider grip part which is provided so as to enclose at least a part of an external peripheral surface of the slider fixing part and which allows the slider fixing part to be slid manually by an operator. The slider fixing part is unrotatably fixed to the main part body and the slider grip part is rotatably connected to the slider fixing part.COPYRIGHT: (C)2015,JPO&INPIT【課題】高周波処置具において、使用者は、配管全体を回転させようとすると、操作ワイヤを進退させる把持を一旦緩め、回転後に再度把持し直す動作を要し、連続的な操作の妨げとなっていた。【解決手段】高周波処置具は、体腔内に挿入される可撓管と、可撓管内に進退自在に挿通された操作ワイヤと、操作ワイヤの先端側に配置され高周波電流の印加により生体組織を処置する処置部と、可撓管の基端側を固定する本体部と、可撓管の基端から導出された操作ワイヤの基端側を固定し、操作ワイヤを本体部に対して軸線方向へスライドさせるスライダー固定部と、スライダー固定部の外周面の少なくとも一部を環囲して設けられ、使用者の操作によりスライダー固定部をスライドさせるスライダー把持部とを備え、スライダー固定部は本体部に対して回転不能に連結され、スライダー把持部はスライダー固定部に対して回転自在に連結されている。【選択図】図4
