Mechanical prosthetic heart valve

Abstract

The invention relates to a mechanical prosthetic heart valve () comprising: an annular support () having an internal peripheral wall () centered about a longitudinal axis (X) and delimiting an internal passage, and at least two mobile leaflets, preferably three mobile leaflets (), arranged in such a way as to each be able to effect a rotational movement about an axis of rotation perpendicular to said longitudinal axis (X) so that the valve () can pass from a closed configuration to an open configuration and vice versa. Each leaflet () comprises a leading edge () designed to come against a portion of the internal peripheral wall () of the annular support () when the valve is in a closed configuration, an internal surface () extending from the leading edge (), and an external surface () opposite the internal surface () and extending from the leading edge (). The annular support () comprises two opposite edges () and as many extensions () as the number of leaflets (), which extend axially from one of the opposite edges. The annular support () further comprising, on the internal peripheral wall (), two lower bearing members () per leaflet which contact the internal surface () of the associated leaflet () at respective bearing zones () when the valve () is in a closed configuration. A distance between the center of respective bearing zones () and the leading edge () of each leaflet is greater than a thickness of the leaflet at the center of said respective bearing zones ().