ALEXANDRIA, Va., June 10 -- United States Patent no. 12,290,675, issued on May 6, was assigned to Board of Regents, The University of Texas System (Austin, Texas) and Cardio Vol LLC (Dallas).

"Method and apparatus for assisting a heart" was invented by Marc David Feldman (San Antonio), John Porterfield (Austin, Texas) and Clay Heighten (Dallas).

According to the abstract* released by the U.S. Patent & Trademark Office: "An apparatus for a heart of a patient having a cardiac assist device adapted to be implanted into the patient to assist the heart with pumping blood. The apparatus has a sensor adapted to be implanted into the patient. The sensor in communication with the cardiac assist device and the heart which measures native volume of ...