The Tendyne system replaces mitral valves that are not functioning properly due to a buildup of calcium in the base of the valves, known as severe mitral annular calcification (MAC) Tendyne offers a new treatment option for patients who are not candidates for open-heart surgery or mitral repair This approval expands Abbott's portfolio of minimally invasive structural heart therapies in the U.S.ABBOTT PARK, Ill., May 27, 2025 /PRNewswire/ -- Abbott (NYSE: ABT) today announced the U.S. Food and Drug Administ ...