HeartMate II LVAD (IMAGE) Michigan Medicine - University of Michigan Caption The HeartMate II left ventricular assist device, which is implanted into the body and helps pump blood in patients with severe heart failure. Credit Thoratec Corp. (used with permission) Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.