The operation device the device itself which possesses the pipe 3 which leads operation instrument such as forceps to the coelom while being interposed into 3 and pipe 2, has with needle 4, the stab does the inside needle 4 in body grain side system and in order to insert pipe 2 to the coelom, is constituted. The buckling feature 17 which buckles pipe 2 is provided in device itself 3. Pipe 2 is poured to the coelom and is in state by the fact that it buckles with buckling feature 17, it becomes possible to direct the operation instrument which is inserted to pipe 2 to the various directions inside the coelom.手術装置は、鉗子等の手術器具を体腔へ導く導管3を有する装置本体3と、導管2内に挿入される内針4とを備えており、内針4を体表側組織に穿刺して導管2を体腔へ差し込むように構成されている。装置本体3には、導管2を湾曲させる湾曲機構17が設けられている。導管2を体腔へ差し込んた状態で湾曲機構17により湾曲させることで、導管2へ差し込んだ手術器具を体腔内の様々な方向に向けることが可能になる。
