Hemolung RAS (IMAGE) University of Pittsburgh Caption The Hemolung® Respiratory Assist System is a minimally invasive device that does the work of the lungs by removing carbon dioxide directly from the blood. Credit ALung Technologies 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.