ALEXANDRIA, Va., April 15 -- United States Patent no. 12,599,339, issued on April 14, was assigned to Cardionomix Inc. (Fort Mill, S.C.).

"Systems and methods for affecting cardiac contractility and/or relaxation" was invented by Steven L. Waldhauser (Savage, Minn.), Todd Alan Kerkow (Stacy, Minn.) and Alan David Eskuri (Hanover, Minn.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A system for application of neurostimulation includes an outer sheath, an elongate inner member in the outer sheath and movable relative to the outer sheath. The inner lumen has a distal end. An expandable member is coupled to the distal end of the inner member and is in the outer sheath. The expandable member is self-expanding up...