An electrocautery instrument for endoscopic therapy of the present invention includes an operating handle and a rotatable positioning means. The operating handle includes a cylindrical portion, a clamping portion, and a positioning protruding portion. The clamping portion and the positioning protruding portion are disposed on the cylindrical portion which further has a first inner hole. The rotatable positioning means encloses the cylindrical portion and includes a rotatable part, a second inner hole, an engagement part, and fixing units. The engagement part is disposed inside a side wall of the second inner hole and engages with the clamping portion. The rotatable part is provided for rotating the rotatable positioning means, so that the positioning protruding portion can be positioned at any corresponding fixing unit. Therefore, an electrocautery rod can be connected with and controlled by the operating handle to move, thereby reducing components of the electrocautery instrument and the cost greatly.本發明是一種用於內視鏡醫療電燒器具,包括操作手柄及旋轉定位裝置。操作手柄設有圓筒部、卡固部及定位凸部。卡固部及定位凸部設於圓筒部,圓筒部更設有第一內孔。旋轉定位裝置套設於圓筒部上。旋轉定位裝置包含可旋轉部、第二內孔、卡合部及複數固定單元。卡合部設置於第二內孔側壁並與卡固部卡合。可旋轉部供旋轉定位裝置旋轉,使定位凸部定位在相應的任一固定單元上。如此,電燒桿可連動地被操作手柄操控,使電燒器具零組件最少,進而使成本大幅降低。10‧‧‧電燒桿100‧‧‧電燒器具120‧‧‧圓筒部122‧‧‧卡固部124‧‧‧凸緣126‧‧‧凹槽128‧‧‧導角130‧‧‧定位凸部132‧‧‧缺槽136‧‧‧破孔140‧‧‧第一內孔200‧‧‧旋轉定位裝置210‧‧‧可旋轉部220‧‧‧第二內孔230‧‧‧卡合部232‧‧‧延伸臂234‧‧‧倒勾部250‧‧‧固定單元260‧‧‧定位元件262‧‧‧蓋體270‧‧‧第三內孔280‧‧‧穿孔
