Autonomous cardiovascular implant, which has: an entrance on the high pressure side (16), which is determined to be connected by flow to an artery of a cardiovascular system (52)； an outlet on the low pressure side (18), which is determined to be connected by flow to a vein, especially a vein of the heart muscle (66), of the cardiovascular system (52)； a flow path (46) from the inlet on the high pressure side (16) to the outlet on the low pressure side (18)； a conduit segment (20) that moves away from the inlet on the high pressure side (16), located upstream with an extensible region (22) of bubble type, and a conduit segment located downstream (26), which leads to the outlet on the low pressure side (18) and which has a cross section of flow (24)； characterized in that the duct segment (20) located upstream is disposed with its bubble-type extensible region (22), or next to the duct segment (26) located downstream or inside (84) of the duct segment ( 26) located downstream (26)； wherein the extensible region (22) of the bubble type can be reciprocated between a state of relaxation (30) with a resting cross section (34) and an extension state (32) with a larger working cross section (36) with respect to the resting cross section (34)； in such a way that the flow cross-section (24) of the duct segment (26) located downstream is unlocked, in the relaxed state (30) of the bubble-type extensible region (22)； and the flow cross-section (24) of the duct segment (26) located downstream is reduced at least almost completely, in the extension state (32) of the bubble-type extensible region (22).Implante cardiovascular autónomo, que presenta: una entrada en el lado de alta presión (16), que está determinada para estar unida por flujo a una arteria de un sistema cardiovascular (52)； una salida en el lado de baja presión (18), que está determinada para estar unida por flujo a una vena, en especial a una vena del músculo cardiaco (66), del sistema cardiovascular (52)； una ruta
