BOSTON, Mass.--(BUSINESS WIRE)--NMT Medical, Inc. (NASDAQ: NMTI), an advanced medical technology company that designs, develops, manufactures and markets proprietary implant technologies that allow interventional cardiologists to treat structural heart disease through minimally invasive, catheter-based procedures, today announced the addition of James J. Mahoney, Jr., 64, to its Board of Directors. Mr. Mahoney will fill the vacancy left by Harry A. Schult, who recently announced his resignation.