PROBLEM TO BE SOLVED: To provide a structure for a soft portion of an endoscope capable of varying the flexibility of a soft portion longitudinally.SOLUTION: A structure for a soft portion of an endoscope includes: in the soft portion of an insertion portion, a metal strand cylinder obtained by making metal strands 631 cylindrical. The metal strand cylinder has overlapping portions of the constituent metal strands 631, and the metal strands 631 have a density non-uniform longitudinally and a flexibility different longitudinally.COPYRIGHT: (C)2014,JPO&INPIT【課題】軟性部の可撓性を長さ方向に変化させることができる内視鏡の軟性部構造を提供する。【解決手段】挿入部の軟性部内に、金属素線631を円筒状にした金属素線円筒体を含ませた内視鏡の軟性部構造であって、上記金属素線円筒体は、構成する金属素線631に重なり部分が存在し、金属素線631の密度が長さ方向に非一様で可撓性が長さ方向に異なっている内視鏡の軟性部構造。【選択図】図5
