Centrifugal Blood Pump - REVOLUTION USD$2,900 - one pack 8 pcs Revolution, You Will Achieve Desired Flow Rates with Minimal Revolutions Per Minute: Its open impeller design makes it easy to prime and debubble. The ferrous particle-impregnated nylon magnet is injection molded with features that, combined with the impeller, improve durability. Sealless, low friction bearings improve pump head reliability and reduce heat build-up and resultant hemolysis. The impeller design with six large wash-out holes maintains a continuous flow path free of vane-tip vortices. Relying on Relevant Safety Features Revolution combines superior efficiency and air handling capability with: Low prime volume Low heat generation The low index of hemolysis Available PC biocompatible coating Return Policy Items are sold as-is with no returns or refunds available unless explicitly stated.