PROBLEM TO BE SOLVED: To provide an insertion device that hardly causes a pitch deviation at a connection part of element wires even when compression force is applied to a coil pipe in an axial direction.SOLUTION: An insertion device includes an insertion part inserted into a subject, a wire 10 disposed in the insertion part, and a coil pipe 20 disposed in the insertion part, which is formed by the winding of element wires 50, and into which the wire 10 is inserted. A cross section of the element wires 50 along an axial direction of the coil pipe 20 includes a contact part 52 where the element wires 50 adjacent in an axial direction come in contact with each other, and all of the contact parts 52 are formed planarly.SELECTED DRAWING: Figure 3COPYRIGHT: (C)2020,JPO&INPIT【課題】コイルパイプに対して軸方向に圧縮力が付与されても、素線同士の接触部においてピッチずれがし難い構成を具備する挿入装置を提供する。【解決手段】被検体に挿入される挿入部と、挿入部内に配置されたワイヤ１０と、挿入部内に配置されるとともに素線５０が巻回されることによって形成され、内部にワイヤ１０が挿通されるコイルパイプ２０と、を具備し、コイルパイプ２０の軸方向に沿った素線５０の断面は、軸方向に隣接する素線５０同士が接触する接触部５２を有し、接触部５２の全てが、平面状に形成されている。【選択図】図３
