Large Heart Patch, Duke University (VIDEO) Duke University This video is under embargo. Please login to access this video. Caption Duke engineers have engineered a heart patch large enough to cover most damage caused by heart attacks. These videos show the patch contracting on its own, a 3-D visualization the patch's cells, and the rocking bath that proved critical to the heart patch's record-breaking size. Credit Nenad Bursac, Duke University 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.