A valve prosthesis for implantation in a human, or near the heart, a valve site, including the site of valve one or more sinuses valve, comprising the prosthesis (2): a structure (6) anchorage comprising an annular member (21) output, an annular member (20) input and a plurality of arms (10), each coupled at one end to the annular member (21) output, having arms a first end coupled to member ring (21) output and a second end configured to contact with a base of the valvular sinus and a plurality of cusps (24a, 24b, 24c) coupled to the structure (6) anchor and adapted to substantially allow blood flow in a first direction and to substantially prevent blood flow in a second direction wherein the annular member (21) output has an expanded position configured generally to engage a vessel wall at a distal location relative to the valvular sinus, and wherein at least one of the plurality of arms ( 10) is shaped to fit substantially an entire surface extending longitudinally of the valvular sinus, in which each of the arms (10) includes a first leg and a second leg, wherein the first and second legs (60, 62) of each arm (10) are made in the form of straps which extend in a generally sinusoidal, including each of the plurality of arms of the prosthesis (1) valve further portion U-shaped extending characterized between the first and second (60, 62) pin, and that the first leg (60) includes folds or loops inclined away from the corresponding folds or loops in the second leg (62).Una prótesis de válvula para su implantación en un corazón humano, o cerca del mismo, en un sitio de válvula, incluyendo el sitio de válvula uno o más senos valvulares, comprendiendo la prótesis (2): una estructura (6) de anclaje que comprende un miembro anular (21) de salida, un miembro anular (20) de entrada y una pluralidad de brazos (10), acoplado cada uno en un extremo al miembro anular (21) de salida, teniendo los brazos un primer extremo acoplado al miembro anular (21) de salida y un segundo ex
