PROBLEM TO BE SOLVED: To provide a trocar for endoscopic operation and an endoscopic operation system having no risk of breakage even when a cylindrical trocar endoscopic operation for guiding an endoscope insertion part to a body cavity comes into contact (interference) with another surgical instrument (for example, the tip part of forceps or cautery) in the body cavity.SOLUTION: A trocar for endoscopic operation includes: a hard cylindrical body located at the base end side and a flexible cylindrical part having flexibility, which is extended forward from the hard cylindrical part. The flexible cylindrical part has a net-like tube body formed by braided body of a thin metallic wire or a carbon fiber on the outermost periphery thereof.COPYRIGHT: (C)2014,JPO&INPIT【課題】内視鏡挿入部を体腔内に案内する筒状の内視鏡手術用トロッカーにおいて、体腔内で他の手術器具(例えば鉗子や焼灼器の先端部)と接触(干渉)しても破損のおそれがない内視鏡手術用トロッカー及び内視鏡手術システムを得る。【解決手段】トロッカーは、基端側に位置する硬質筒状体と、この硬質筒状体から前方に延びる可撓性のある可撓筒状部と、を有し、可撓筒状部は、その最外周に、金属細線またはカーボン繊維の編組体からなる網状チューブ体を有している内視鏡手術用トロッカー。【選択図】図9
