Patent ID: 9339598
Filing Date: 2016-05-17
CPC Classification: A61M,F04D

Claim Text:
1. An axial flow blood pump, comprising: a pump housing; a rotor for pumping blood positioned in said housing, said rotor having an axis of rotation, a leading edge proximate an upstream end of said rotor, and a trailing edge proximate a downstream end of said rotor, and comprising peripheral land surfaces defined by one or more flow channels between the respective land surfaces, said one or more flow channels extending from said leading edge to said trailing edge, each said one or more flow channels being curved and having a substantially axially extending outlet channel proximate said trailing edge to drive blood in an axial direction as the rotor is rotated, wherein a collective width of said channels in a circumferential direction of said rotor at each of some axial positions on the radial periphery of the rotor being substantially equal to or less than the collective total width of said peripheral land surfaces in the circumferential direction at said axial positions; and a motor including a plurality of magnetic poles carried by the rotor, and a stator including an electrically activated coil to magnetically interact with said magnetic poles to cause said rotor to rotate.