PROBLEM TO BE SOLVED: To provide a treatment instrument which is inserted easily into a living body by being deformed flexibly and never moves during the treatment.SOLUTION: The treatment instrument 10 includes a treatment part 12 for applying a prescribed treatment to a target organ in a body cavity, a flexible tube part 20 having the treatment part 12 at the distal end, and an insertion portion 14 equipped with a switching tube part 22 which selectively switches a flexible state and a rigid state.COPYRIGHT: (C)2009,JPO&INPIT【課題】生体内へは柔軟に変形して容易に挿入でき且つ処置時には自体が動くことのない処置具を提供すること。【解決手段】処置具10は、体腔内において対象臓器に所定の処置を加える処置部12と、上記処置部12を先端に備えた軟性管部20及び、軟性状態及び硬性状態を選択的に切り替え可能な切り替え管部22を備える挿入部14と、を有する。【選択図】図1
