Disposal tool for this endoscope, in the soft flexible sheath and the aforementioned flexible sheath advance and retreat unrestrictedly is provided in the distal (2036) edge of the operation wire and the aforementioned operation wire which pass is provided in the distal (2036) edge of the basket section and the aforementioned elastic wire which are formed by the plural elastic wires has with the person in charge stopping section which collects the plural aforementioned elastic wires. The largest diameter section of the aforementioned diameter direction in the aforementioned basket section is categorized to the vicinity of the aforementioned person in charge stopping section than intermediate position of the proximal edge and the aforementioned person in charge stopping section of the aforementioned basket section in the aforementioned central axis direction. Each extending to total length, it is not, it goes to the aforementioned person in charge stopping section from the distal (2036) edge of the aforementioned operation wire following the spiral form which is wound leaning toward the same direction it winds and the plural aforementioned elastic wires, pitch gradually has become small.この内視鏡用処置具は、柔軟な可撓性シースと、前記可撓性シースに進退自在に挿通された操作ワイヤと、前記操作ワイヤの遠位端に設けられ、複数の弾性ワイヤにより構成されるバスケット部と、前記弾性ワイヤの遠位端に設けられ、複数の前記弾性ワイヤをまとめる係止部とを備える。前記バスケット部における前記径方向の最大径部は、前記中心軸線方向において前記バスケット部の近位端と前記係止部との中間位置よりも前記係止部の近くに位置する。複数の前記弾性ワイヤは、各々が全長に亘って同方向に向いて巻かれた螺旋形状をなし、前記操作ワイヤの遠位端から前記係止部に行くにしたがって巻きピッチが漸次小さくなっている。
