Catheter simulation (IMAGE) University of California - San Diego Caption A steerable catheter allows surgeons to deliver therapies, in this case platinum coils that block blood flow to an aneurysm, in the deepest recess of the brain. Credit University of California San Diego Usage Restrictions Please credit University of California San Diego License Original 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.