PROBLEM TO BE SOLVED: To provide an insertion tool in which a procedure for burying an indwelling object for holding a biological tissue into a living body can be performed easily and safely.SOLUTION: An insertion tool comprises: a long urethra insertion part 41 inserted into a lumen of a living body having an opening on a body surface from the tip side through the opening a suction hole 44 which is provided in the urethra insertion part 41 and located in the lumen of the living body in an inserted state where the urethra insertion part 41 is inserted into the lumen of the living body an inflow reduction part 450 which is located closer to the base end side than the suction hole 44 of the urethra insertion part 41 in the inserted state and makes an inflow reduction state where the inflow of air to the lumen of the living body through the opening is reduced and a reduction state maintenance part for maintaining the inflow reduction state.COPYRIGHT: (C)2015,JPO&INPIT【課題】生体組織支持用留置物を容易に生体内に埋設する手技を安全に行うことのできる挿入具を提供すること。【解決手段】体表面に開口を有する生体管腔に、前記開口を介して先端側から挿入される長尺な尿道挿入部41と、尿道挿入部41に設けられ、尿道挿入部41が前記生体管腔に挿入された挿入状態で、前記生体管腔内に位置する吸引孔44と、前記挿入状態で、尿道挿入部41の吸引孔44よりも基端側に位置し、前記開口を介して前記生体管腔内へ空気が流入するのが低減された流入低減状態とする流入低減部450と、流入低減状態を維持する低減状態維持部とを備えている。【選択図】図54
