PROBLEM TO BE SOLVED: To provide a device inserted into lumen facilitating the inserting operation of an endoscope insert section into a deep part and surely and smoothly inserting the endoscope insert section into the deep part.SOLUTION: The device 1 inserted into lumen includes a cam hole 15ac and also a seventh connecting pin of a first opening/closing member 15a. The device inserted into lumen includes a notch groove 14b and also a fourth connecting pin 34 of a first section group body 14. A first opening/closing link mechanism 15 includes: a first connecting section 15b including a first projection 15b2 slidably disposed in the cam hole 15ac of the first opening/closing member 15a, and a first engagement portion 15b3 turnably disposed on the fourth connecting pin 34 of the first section group body 14 and a first connecting plate 15c including a first opening/closing member fixing portion 15c5 turnably connected to the first connecting section 15b at a predetermined position and turnably disposed around the seventh connecting pin 37 of the first opening/closing member 15a, and a slider connecting portion 15c4 slidably disposed in the notch groove 14b of the first section group body 14.COPYRIGHT: (C)2013,JPO&INPIT【課題】内視鏡挿入部の深部への挿入操作が容易で、深部への挿入を確実、且つスムーズに行える、管内挿入デバイスを提供すること。【解決手段】管内挿入デバイス1は、第1開閉部材15aのカム孔15acを設ける一方、第7連結ピンを設けている。第1部組本体14の切欠溝14bを形成する一方、に第4連結ピン34を設けている。第1開閉リンク機構部15は、第1開閉部材15aのカム孔15acに摺動自在に配置される第1突起15b2および第1部組本体14の第4連結ピン34に回動自在に配置される第1係合部15b3を備える第1連結部15bと、第1連結部15bと予め定めた位置で回動自在に連結される、第1開閉部材15aの第7連結ピン37に回動自在に配置される第1開閉部材固定部15c5および第1部組本体14の切欠溝14bに摺動自在に配置されるスライダー連結部15c4を備えて構成された第1連結板15cと、を具備している。【選択図】図8