PROBLEM TO BE SOLVED: To provide an insertion instrument configured to reliably and stably perform simultaneous fixing of a plurality of linear members for varying an operating state of an action portion provided at an insertion portion in a simple structure.SOLUTION: The insertion instrument includes at least two inner guide sheaths, and a linear member fixing mechanism. The linear member fixing mechanism includes a guide member, brake members, and a cam having a shaft part 121 and a rod-like cam portion 122. The cam portion 122 is inserted into a hole 121h slidably in the shaft-part orthogonal direction C, the hole formed by penetrating, in the shaft-part orthogonal direction C, through an extention-direction intermediate position in the shaft part 121.COPYRIGHT: (C)2015,JPO&INPIT【課題】簡単な構成にて挿入部に設けられた動作部の動作状態を可変させる複数の線状部材の同時固定を確実かつ安定して行うことができる構成を有する挿入機器を提供する。【解決手段】2本の内側ガイドシースと、線状部材固定機構と、を具備し、線状部材固定機構は、ガイド部材と、ブレーキ部材と、軸部121と棒状のカム部122とを有するカムと、を具備し、カム部122は、軸部121における延在方向の中途位置に対して、軸部直交方向Cに貫通して形成された孔部121hに対し、軸部直交方向Cに摺動自在に挿通されている。【選択図】図12
