Cardioplegia Cannulae, Antegrade Aortic Root, with and without Vent Line, 18 Ga (4 Fr), AR-11018 The Aortic Root Cannula is designed to deliver cardioplegia solution during cardiopulmonary bypass surgery and aspirate air from the aorta at the end of the cardiopulmonary bypass procedure. The Aortic Root Cannula with vent line is designed to deliver cardioplegia solution and vent the heart during cardiopulmonary bypass surgery. Order Code AR-11018 Qty Per Box 10 Latex-Free