PROBLEM TO BE SOLVED: To provide an endoscopic treatment tool which enables a reliable and easy treatment by interlocking advancing and retreating movements of an operational member with rotation control of a distal end treatment member, and has a stopper which is free from risks of deformations and falling-out and is effectively placed while preventing the distal end rigid portion from being long.SOLUTION: At least the distal end portion of a flexible sheath 1 is formed of a flexible tube and has a constricted portion 5 protruding inward. A tightening ring 6 which is made of a rigid material for tightening the constricted portion 5 from the peripheral side of the flexible tube is mounted on the flexible tube in a manner to be fixed to prevent the expansion of an inner diameter of the constricted portion 5. The proximal end wall portion of the inner surface of the constricted portion 5 becomes the stopper 8.COPYRIGHT: (C)2010,JPO&INPIT【課題】操作部材の進退動作と先端処置部材の回転規制とが連動するようにして処置を容易且つ確実に行うことができ、しかも、先端硬質部長が長くならないように変形や脱落等のおそれのないストッパを効果的に設けることができる内視鏡用処置具を提供すること。【解決手段】可撓性シース1の少なくとも先端部分が可撓性チューブで形成されて、そこに内方に突出する括れ部5が形成され、その括れ部5の内径が広がらないように括れ部5を可撓性チューブの外周側から締め付ける剛性のある材料からなる締付輪6が可撓性チューブに固定的に取り付けられて、括れ部5の内面後端壁部分がストッパ8になっている。【選択図】 図1
