A centrifugal clinical blood pump comprises a bell-shape or conical housing with a suction inlet at the apex and a tangential outlet adjacent the base. A conical rotator comprising at least one downwardly outflaring skirt surrounding a central cone is rotatably mounted in the housing by a jewelled pivot...http://www.google.fr/patents/US4507048?utm_source=gb-gplus-shareBrevet US4507048 - Centrifugal clinical blood pump
