A manipulating section for an endoscopic treatment instrument a frame plate adapted to be fixed to or disengaged from an entrance of a treatment instrument insertion channel in an endoscope, an outer sheath lock nut by which a basal end portion of an outer sheath can be moved back and forth on an elongation...http://www.google.com/patents/US20010004676?utm_source=gb-gplus-sharePatent US20010004676 - Manipulating section for an endoscopic treatment instrument
