PROBLEM TO BE SOLVED: To enable to recognize that a processing part of a tip of a device reaches near the tip of an endoscope without depending on ones vision in a device of the endoscope.SOLUTION: In the device 10 for the endoscope, a regulating member 14 is provided on a sheath 13, and the regulating member is composed of a large-diameter part 14a with a diameter larger than the inner diameter of an inserting opening 23 for the endoscope 20, and a small-diameter part 14b arranged on a processing part side from the large-diameter part and with a diameter smaller than the inner diameter of the inserting opening. When the sheath is moved into the inserting opening by forwarding the sheath into the inserting opening, the small-diameter part is brought into contact with the inserting opening to increase a force resistant to delivering into the inserting opening, and the amount of projection of the processing part from the tip of the endoscope can be restricted by the large-diameter part.COPYRIGHT: (C)2012,JPO&INPIT【課題】内視鏡用デバイスにおいて、デバイス先端の処置部が内視鏡先端の近傍に到達したことを視覚に頼ることなく認識することができるようにする。【解決手段】内視鏡用デバイス10において、シース13上に規制部材14を設け、規制部材を、内視鏡20の挿入口23の内径よりも大きな径を有する大径部14aと、大径部よりも処置部側に配置され、挿入口の内径よりも小さな径を有する小径部14bとで構成し、シースが挿入口内へ送られることにより挿入口内へ移動するとき、小径部が挿入口に接触して挿入口内への送りに抗する力を増大させるようにするとともに、大径部により、内視鏡先端からの処置部の突出量を制限するようにする。【選択図】図1
