A perfusion filter catheter is used to capture potential emboli within the aorta during heart surgery and cardiopulmonary bypass. An expandable embolic filter assembly having fine filter mesh for capturing macroemboli and microemboli is mounted on a catheter shaft having a perfusion lumen with perfusion...http://www.google.com.au/patents/US6361545?utm_source=gb-gplus-sharePatent US6361545 - Perfusion filter catheter
