Abstract: A blood pump device comprising: a centrifugal blood pump having: a pump housing defining an inlet to receive blood and direct blood onto an impeller, the pump housing having a top bezel and a central column directed into the middle of a cavity within the pump housing; the impeller is adapted, in use, to rotate in the cavity around the central column and to be suspended on a pivot bearing mounted between the middle of the lower surface of the impeller and the middle of the upper surface of the central column; the impeller is stabilised, in use, by the rotation of blades generating a centrifugal force acting on the blades in radial direction away from the central column.

Abstract: A cardiac assist device comprising: an implantable pump having a first and second end and adapted to be mounted within a blood vessel, wherein the pump further comprises an impeller that rotates about an axis parallel to the flow of blood through the pump and wherein the impeller lateral movement is restrained between the first and second end by bearings positioned at respective first and second ends; and wherein the pump is powered by a first implanted coil and a second external coil mounted on either side of a skin barrier of a patient, wherein the first and second coils are in electrical communication to relay power across the skin barrier.