TUBULAR INDWELLING IMPLEMENT

To facilitate insertion of a tool into the inside of a tubular indwelling implement.SOLUTION: A tubular indwelling implement 1 to be indwelt in a biological lumen (a bile duct V) comprises: a tubular body 2; a valve 3 which is provided downstream of the body 2 in the flowing direction of a fluid (bile) flowing inside the biological lumen and has an outflow port 23 for the fluid to flow out; and an interconnecting part 4 detachably interconnecting the body 2 and the valve 3. The connecting part 4 separates the body 2 and the valve 3 from each other based on the displacement of the valve 3 toward downstream in the flowing direction with respect to the body 2.SELECTED DRAWING: Figure 1 【課題】管状留置具の内側への冶具の挿入を容易に行う。【解決手段】生体管腔（胆管Ｖ）内に留置される管状留置具１であって、筒形状をなす本体部２と、本体部２よりも生体管腔内を流れる流体（胆汁）の流れ方向の下流側に設けられ、流体が流出する流出口２３を有する弁部３と、本体部２と弁部３とを分離可能に接続する接続部４と、を備え、接続部４は、弁部３の本体部２に対する流れ方向の下流側への変位に基づいて、本体部２と弁部３とを分離させる。【選択図】図１