HOUSTON, TX -- (MARKET WIRE) -- May 22, 2007 -- MicroMed Cardiovascular, Inc. (OTCBB: MMCV) is pleased to announce that on Monday, May 14, 2007, doctors at Freeman Hospital in Newcastle upon Tyne, England, United Kingdom(UK), successfully implanted the latest design DeBakey VAD® “X2" pump in a 59-year-old man.