Balloons Inflating on both Sides (IMAGE) Boston Children's Hospital Caption Harvard John A. Paulson School of Engineering and Applied Sciences (SEAS) and the Karp Lab at Brigham and Women's Hospital have jointly designed a specialized catheter for fixing holes in the heart using a biodegradable adhesive and patch. Two balloons, one on either side of the hole, open and apply pressure to the patch to secure it in place. Here, the right balloon is being deployed. Credit Boston Children's Hospital 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.