1/1 summary "prosthetic heart valve" described herein is a prosthetic heart valve (1； 100) including: -a prosthetic valve circular crown (2； 200) defining a hole for the flow of blood, at least one prosthetic valve folding element (4； 400) including at least one matching surface (c1, c2, c3, c4； c100) configured to cooperate with at least one corresponding matching surface (c5, c6, c1； c100) of said prosthetic heart valve (1； 100) for regulating blood flow through said orifice, said first folding element (4, 400) being displaced by the blood flow between a closed position and an open position to correspondingly produce contact and separation of Cooperative coaptation surfaces (c1, c2, c3, c4, c5, c6, c1； c100), where in the open position the separation of cooperative coaptation surfaces (c1, c2, c4, c5, c6, c1 ； c100) allow the blood luxury through said orifice in a first direction (f1), and wherein in the closed position the contact of cooperative coaptation surfaces (c1, c2, c3, c4, c5, c6, c1； c100) prevents blood flow through said orifice in a second direction (f2) opposite said first direction. the prosthetic heart valve includes at least one device (8, 10； 100) configured to at least partially prevent contact between cooperative coaptation surfaces (c1, c2, c3, c4, c5, c6, c1； c100) of so that a blood regurgitation in said second direction (f2) is allowed, wherein said at least one device (8, 10； 110) is configured to cease its action after a predetermined amount of time.1/1 resumo “válvula cardíaca protética” é descrita aqui uma válvula cardíaca protética (1；100) incluindo: -uma coroa circular de válvula protética (2；200) definindo um orifício para a passagem do fluxo de sangue, -pelo menos um elemento desdobrável de válvula protética (4； 400) incluindo pelo menos uma superfície de coaptação (c1, c2, c3, c4； c100) configurada para cooperar com pelo menos uma superfície de coaptação correspondente (c5, c6, c1； c100) de dita válvula cardíaca protética (1； 100)
