To provide a prosthetic valve capable of assisting the function of a patients mitral valve in a minimally invasive manner.SOLUTION: In a prosthetic valve 1 including a ring 3, a first leaflet 5 and a second leaflet 7, the first leaflet 5 and the second leaflet 7 are connected to the artificial valve 1 , The first leaflet 5 and the second leaflet 7 are connected to each other at the lower connecting portion 9 which is present at the lower part of the prosthetic valve 1 and the first leaflet 5 and the second leaf 5 Wherein the valve leaf has a shape that decreases in width as it goes downward. The ring 3 may be collapsible and openable in the left atrium. The lower portions of the first leaflet 5 and the second leaflet 7 are preferably fixed to the apex of the left ventricle apex.(FIG.【課題】低侵襲で患者の僧帽弁の機能を助けることができる人工弁を提供する。【解決手段】リング3と,第1の弁葉5と,第2の弁葉7とを含む人工弁1であって,第1の弁葉5及び第2の弁葉7は,人工弁1の上部においてリング3と接続され,第1の弁葉5及び第2の弁葉7は,人工弁1の下部に存在する下部接続部9において接続され,第1の弁葉5及び第2の弁葉7は,下方に進むほど幅が狭くなる形状を有する,人工弁。リング3は,折りたたむことができ,左心房内で開くことができてもよい。第1の弁葉5及び第2の弁葉7の下部は,左室心尖部に固定されるものが好ましい。【選択図】図1
