ENDOSCOPIC TREATMENT TOOL

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