PROBLEM TO BE SOLVED: To provide a medical treatment instrument which performs hemostasis of a treatment part and can easily place a medical material providing an epithelial function on the treatment part.SOLUTION: A medical treatment instrument comprises: a body part 110 which is inserted into a urinary tract 10, can extend and contract in a Y direction in the urinary tract 10, and forms a plurality of layers in a circumferential direction in a contracted state an extension part 111A which is provided on an innermost layer of the body part, extends the body part while moving to a tip side by being pushed out, and can maintain the position of the body part in the urinary tract in an extended state and a movable part 113C which is provided on an outermost layer of the body part in a state in which a medical material can be disposed on an outer periphery 113D, and contracts the body part while moving along the extension part.SELECTED DRAWING: Figure 4COPYRIGHT: (C)2016,JPO&INPIT【課題】処置部の止血を行うとともに、上皮機能を提供する医療材料を、容易に処置部に留置することのできる医療用処置具を提供する。【解決手段】尿道10内に挿通され、尿道10内のY方向に伸縮可能とし、収縮状態において周方向に複数の層をなす本体部110と、本体部の最内層に設けられ、押出されることにより先端側に移動して本体部を伸長させるとともに、伸長状態において本体部の尿道内における位置を維持可能とする伸長部111Aと、外周113Dに医療材料を配置可能な状態で本体部の最外層に設けられ、伸長部に沿って移動し本体部を収縮させる移動部113Cと、を有する。【選択図】図4
