Aortic occlusion balloon cannula

摘要

A multi-lumen cannula device is provided having an occlusion balloon for partitioning a vessel, such as the aorta during a CPB procedure. The cannula has a first lumen for delivering fluid to a location distal to the balloon, a second lumen for delivering fluid to a location proximal to the balloon, and an inflation lumen through which the balloon may be inflated. In certain embodiments, the cannula has a flexible proximal portion and a more rigid distal portion maintained at an angle thereto. The distal and proximal structures of the balloon facilitate reliable balloon positioning and occlusion within the vessel.