Blood pump having rotor with internal bore for fluid flow

Details Blood pump having rotor with internal bore for fluid flow Blood pump having rotor with internal bore for fluid flow

1997-07-01

1999-08-17

Freay, Charles G.

Pumps

Motor driven

Electric or magnetic motor

41742314, 4174241, 417355, 415206, 415900, F04B 3504

Patent

active

059384123

ABSTRACT:
A pump for transferring fragile and aggressive fluids such as human blood and comprising a pumping chamber along with a fluid inlet port disposed on the chamber, and one or more outlet ports arranged transversely and medially of the inlet ports. A shrouded rotor is positioned within the pumping chamber having a core of dual-conical configuration converging toward opposed polar end regions and with an axis of rotation extending between the polar regions. The shrouded rotor includes magnets which are arranged at radially spaced locations and with a magnetic drive positioned to deliver rotational driving energy to the rotor. The sole support for the rotor are the hydrodynamic forces acting upon the rotor during its operation, with the rotor body having a relative density of between 10% and 90% of the relative density of the fluid being pumped.

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