ALEXANDRIA, Va., June 6 -- United States Patent no. 12,279,951, issued on April 22, was assigned to Laplace Interventional Inc. (Plymouth, Minn.).

"Transcatheter heart valve prosthesis assembled inside heart chambers or blood vessels" was invented by Ramji Iyer (Plymouth, Minn.), Stephen Anderson (Minneapolis) and Samuel Thomas Johnson (Maple Grove, Minn.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Some embodiments described herein include a heart valve replacement system that may be delivered to the targeted heart valve site via a delivery catheter. In some embodiments, the heart valve replacement system can assemble a valve device after the valve device is delivered to the heart. In some embodiments, he...