PROBLEM TO BE SOLVED: To provide a medical treatment tool capable of expanding an expansion body without feeding any fluid.SOLUTION: A medical treatment tool 1 comprises: an insertion tube 2 to be inserted into a body of a patient a rotor 4 extended into said insertion tube 2 and made rotatable on the axial direction of the insertion tube 2 an expansion body 6 disposed at a leading end part of the insertion tube 2 and made expandable in a radial direction of the insertion tube 2 and a rotation force transmission mechanism 7 for transmitting a rotation force of the rotor 4 to the expansion body 6 thereby to expand the expansion body 6.COPYRIGHT: (C)2015,JPO&INPIT【課題】流体を供給せずに拡張体を拡張できる医療用処置具を提供すること。【解決手段】医療用処置具1は、患者の体内に挿入される挿入管2と、前記挿入管2内に延設され、当該挿入管2の軸方向を回転中心として回転自在に設けられた回転体4と、前記挿入管2の先端部に設けられ、当該挿入管2の径方向に拡張自在に構成された拡張体6と、前記回転体4の回転力を前記拡張体6に伝達して当該拡張体6を拡張させる回転力伝達機構7とを備えている。【選択図】図2
