内視鏡的逆行性胆膵管造影法に限らず、胆管、又は膵管の内部の治療において、各種処置具を容易に導入し、適切な処置を行うことができる細長医療部材を実現すること。 To achieve an elongated medical member that can readily introduce various treatment instruments and perform a proper treatment in the bile duct or the pancreatic duct regardless of cholangiopancreatography. - 特許庁