Centrifugal blood pump assembly having magnetic material embedde

Details Centrifugal blood pump assembly having magnetic material embedde Centrifugal blood pump assembly having magnetic material embedde

1997-05-27

2000-02-29

Thorpe, Timothy S.

Pumps

Motor driven

Electric or magnetic motor

417365, 415900, F04B 1700

Patent

active

060301880

ABSTRACT:
A centrifugal fluid pump assembly includes a housing having fluid inlet and outlet ports and an impeller having magnetic pieces disposed therein and accommodated for rotation in the housing for feeding the fluid, typically blood by a centrifugal force developed during rotation. A rotational torque generating mechanism including a rotor having magnets for attracting the magnetic pieces in the impeller and a motor for rotating the rotor serves to impart a rotational torque to the impeller in a non-contact relationship for thereby rotating the impeller. The impeller has vanes which define radially outwardly extending fluid passages therebetween. The magnetic pieces are embedded in the vanes.

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T. Akamatsu et al., "Recent Studies of the Centrifugal Blood Pump with a Magnetically Suspended Impeller", Artif Organs., vol. 19, No. 7, 1995, pp. 631-634.
Garay, Paul; Pump Application Desk Book; pp. 66-67, Jan. 1996.

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