ALEXANDRIA, Va., March 26 -- United States Patent no. 12,256,938, issued on March 25, was assigned to Conformal Medical Inc. (Nashua, N.H.).

"Devices and methods for excluding the left atrial appendage" was invented by David A. Melanson (Hudson, N.H.), Andy H. Levine (Newton Highlands, Mass.), James H. Loper (Wales, Mass.), Michael T. Radford (Nashua, N.H.), Carol Devellian (Topsfield, Mass.), Aaron V. Kaplan (Norwich, Vt.) and Ronald B. Lamport (Pelham, N.H.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Devices and methods are described for occluding the left atrial appendage (LAA). The device excludes the LAA from blood flow to prevent blood from clotting within the LAA and subsequently embolizing, partic...