PROBLEM TO BE SOLVED: To provide an insertion device having a movement member regulation mechanism which can stably and surely generate fixing force during fixing a guide sheath between a brake member and a guide member by using cam means to maintain the fixing of the guide member.SOLUTION: An endoscope being an insertion device includes an insertion part, an operation part 3, a bend part that operates by an operation of a bending operation knob 10, a bendable wire 7u and guide sheaths 40, 50 for operating the bend part, a guide member 27 provided with a guide groove 27g for guiding the inner guide sheath 40, a movement member regulation mechanism 20, and a switch lever 21. The movement member regulation mechanism 20 includes a brake member 26 brought into contact with the inner guide sheath 40 to regulate forward/backward movement, a slide link mechanism 24 for switching a state with the brake member 26 pressed against the inner guide sheath 40 and a state with the brake member 26 separated from the inner guide sheath 40 by an operation of the switch lever 21, and a force amount regulation part for regulating a pressing force amount with the brake member 26 in contact with the inner guide sheath 40.COPYRIGHT: (C)2016,JPO&INPIT【課題】カム手段を用いてガイドシースをブレーキ部材とガイド部材との間に固定する際の固定力を、安定かつ確実に発生させてガイド部材の固定を維持し得る移動部材規制機構を有する挿入機器を提供する。【解決手段】挿入機器である内視鏡は、挿入部と、操作部3と、湾曲操作ノブ10の操作で動作する湾曲部と、湾曲部を動作させる湾曲ワイヤ7u及びガイドシース40、50と、内側ガイドシース40を案内する案内溝27gを設けたガイド部材27と、移動部材規制機構20及び切替レバー21とを具備し、移動部材規制機構20は、内側ガイドシース40に当接して進退移動を規制するブレーキ部材26、切替レバー21の操作によってブレーキ部材26を内側ガイドシース40に押付けた状態と離間した状態とに切替えるスライドリンク機構24、及びブレーキ部材26が内側ガイドシース40に当接した状態で押圧力量を規制する力量規制部、を備える。【選択図】図6