ALEXANDRIA, Va., July 15 -- United States Patent no. 12,661,221, issued on June 23, was assigned to Vactronix Scientific LLC (San Antonio).

"Methods of making vavlular devices" was invented by Julio C. Palmaz (Napa, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method of making a valvular medical device including a cell configured to flex out-of-plane upon application of a lateral or circumferential force applied to the biased cell, the biased cell having an elongate member projecting axially from an apex of the biased cell that flexes out-of-plane concomitantly with out-of-plane flexion of the biased cell. A monolithic hypotube is formed into a lattice structure having a plurality of biased cells ...