Being interposed endoscopic into the coelom, the disposal tool for the endoscope which is used as for (1), the sheath which consists of the mixing material where at least part mixing is done the thermoplastics and the building a bridge accelerator (10) with, advance and retreat possibly the Interpolation the installation and others re it is the disposal section (20) with, the installation and others re it is in the aforementioned sheath the function part (30) with to have for the 2nd destal of the aforementioned manipulation wire for the 1st destal of the manipulation wire and the aforementioned manipulation wire which pass, as for the aforementioned sheath, ionization Characteristic radiation being irradiated by the aforementioned mixing material, the building a bridge section where the aforementioned thermoplastics build a bridge (11) With, the not yet building a bridge field where the aforementioned thermoplastics have not built a bridge (12) with it possesses.経内視鏡的に体腔内に挿入されて使用される内視鏡用処置具(1)は、少なくとも一部が熱可塑性樹脂と架橋促進剤とが混練された混練材料からなるシース(10)と、前記シースに進退可能に挿通された操作ワイヤと、前記操作ワイヤの第1の端部に取り付けられた処置部(20)と、前記操作ワイヤの第2の端部に取り付けられた操作部(30)とを備え、前記シースは、前記混練材料に電離性放射線が照射されて前記熱可塑性樹脂が架橋された架橋部(11)と、前記熱可塑性樹脂が架橋されていない未架橋領域(12)とを有する。
