ALEXANDRIA, Va., June 16 -- United States Patent no. 12,653,515, issued on June 16, was assigned to Rex Medical LP (Conshohocken, Pa.).

"Vascular hole closure device" was invented by Stephen A. DeFonzo (Wayne, Pa.), James S. Tarmin (Penn Valley, Pa.) and Thanu Anidharan (Downingtown, Pa.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A device for closing an aperture in a vessel wall including a covering member positionable inside the vessel against the internal opening of the aperture and having a dimension to prevent egress of fluid through the aperture. The covering member has a proximal surface and a distal surface, the distal surface having a concave surface and the proximal surface having a raised surfa...