Edwards Lifesciences Dispersion Aortic Perfusion Cannula with Duraflo Coating, Sterile, RX only For Single Use Only, || Product Usage: || Aortic perfusion cannulae are intended for perfusion of the ascending aorta during short-term (< 6 hours) cardiopulmonary bypass procedures. Aortic cannulae in sizes 6Fr to 18Fr can be used in pediatric patient populations. Extracorporeal circuit components with a Duraflo coating are intended for use in cardiopulmonary surgery when a heparin coated blood path is desired.