Problem to be solved: to provide a fixing structure of a wire in an endoscope having a structure in which a tip end of a wire is easily fixed to a ring-shaped member with high positional accuracy and the durability of the wire is improved.Solution: a first curved frame 15 constituting a part of an insertion portion inserted into the subject, a through hole 50 formed in the first curved frame 15 and extending in the axial direction J with a predetermined width S1 in the circumferential direction s, a wire 17 extended in the longitudinal direction of the insertion portion, and is fixed to the tip of the wire The width S2 in the through hole 50 is substantially equal to the width S1 in the through-hole 50, and at least a part is inserted into the through hole 50 and is welded to the pipe 20 welded to the inner surface 50N of the through hole 50 and through holeA relief groove 51 is provided at the rear end 50t and is set larger in the circumferential direction s than the width S1 and the swinging range y of the wire 17.Diagram【課題】ワイヤの先端を位置精度良く容易にリング状部材に固定できるとともにワイヤの耐久性が向上された構成を具備する内視鏡におけるワイヤの固定構造を提供する。【解決手段】被検体内に挿入される挿入部の一部を構成する第1湾曲駒15と、第1湾曲駒15に形成され、周方向Sに所定の幅S1を有して軸方向Jに延びる貫通孔50と、挿入部の長手方向に延伸されたワイヤ17と、ワイヤ17の先端に外嵌されて固定され、貫通孔50における幅S1と略等しい幅S2を周方向Sに有し、少なくとも一部が貫通孔50に嵌入され、該貫通孔50の内面50nに溶接されるパイプ20と、貫通孔50における後端部50tに設けられ、幅S1及びワイヤ17の揺動範囲Yよりも周方向Sに大きく設定された逃げ溝51と、を具備する。【選択図】図8
