WPI Heart Patch Close-up (IMAGE) Worcester Polytechnic Institute Caption A close-up of a heart patch developed by Worcester Polytechnic Institute (WPI) researchers and woven of biopolymer microthreads. The patch could one day be used to help cardiac muscle damaged by a heart attack beat more efficiently and strongly. Credit Worcester Polytechnic Institute 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.