The present invention relates to a high efficiency cardiac valve structure, which substantially consists of an annular portion having, at one axial end thereof, a pair of valve members of substantial arc-shaped configurations, which valve members are hinged or pivoted to the annular body.
More specifically, said valve members are so arranged and designed as to provide a one-way valve able of opening as the blood flows in a direction, and of automatically closing as the blood flows in the opposite direction.
Cardiac valves are generally known which, even if they have been found to be satisfactory from the operational standpoint, are however susceptible to further improvements, mainly with respect to the coupling of the valve members to the ring element.