Patent ID: 6186665
Filing Date: 2001-02-13
Classification: A61M,F04D

Abstract:
A motor rotor assembly for use in a blood pump comprising:an inflow bearing disposed within the blood flow conduit proximal to an inflow port of the blood flow conduit;an outflow bearing disposed within the blood flow conduit proximal to an outflow port of the blood flow conduit; anda motor rotor disposed within a blood flow conduit and rotatably mounted between the inflow bearing and the outflow bearing, an inflow end of the rotor forming an inflow ball-and-cup bearing interface with the inflow bearing, and an outflow end of the rotor forming an outflow ball-and-cup bearing interface with the outflow bearing, wherein an outer diameter of the outflow ball-and cup bearing interface is larger than an outer diameter of the inflow ball-and-cup bearing interface.