Sleeve Compresses the Heart (VIDEO) Boston Children's Hospital This video is under embargo. Please login to access this video. Caption A soft robotic sleeve that is fitted around the heart, where it twists and compresses the heart's chambers just like healthy cardiac muscle would do. Credit Boston Children's Hospital, Harvard 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.