A transcatheter temporary artificial valve for blood vessels, comprising an expandable support structure (5''), a valve (7), a filter (12) and a conveyor (6); said support structure (5'). ') forms a tubular shape including a distal end and a proximal end when expanded, the valve (7) being located at the distal end, and the conveyor (6) at the support structure ( 5) A transcatheter temporary valve prosthesis including a central passageway extending through the proximal end to the distal end and adapted to act as an introducer for other devices.血管のための経カテーテル仮人工弁であって、拡張可能支持構造(5’’)と、弁(7)と、フィルタ(12)と、コンベヤ(6)とを含み;前記支持構造(5’’)は、拡張されると遠位端と近位端とを含む管状形状を形成し、前記弁(7)は、前記遠位端に位置し、前記コンベヤ(6)は、前記支持構造(5)内を前記近位端から前記遠位端まで延び他のデバイスのための導入器として働くように適用された中央通路を含む、経カテーテル仮人工弁。