ALEXANDRIA, Va., June 17 -- United States Patent no. 12,310,844, issued on May 27, was assigned to Novostia SA (Epalinges, Switzerland).

"Mechanical prosthetic heart valve" was invented by Philippe Perrier (Saint-Nom-la-Breteche, France).

According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to a mechanical prosthetic heart valve (10) comprising an annular support (12) having an internal peripheral wall (14) centered about a longitudinal axis (X) and delimiting an internal passage, and at least two mobile leaflets (40), preferably three leaflets (40), 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...