Sealless rotodynamic pump with radially offset rotor

Details Sealless rotodynamic pump with radially offset rotor Sealless rotodynamic pump with radially offset rotor

1991-05-03

1994-06-28

Bertsch, Richard A.

Pumps

Motor driven

Electric or magnetic motor

4174237, 604151, 415900, F04B 1700

Patent

active

053241770

ABSTRACT:
A sealless centrifugal blood pump is provided in which a rotatable impeller is supported in a pump housing by fluid bearings during operation. Rotational movement of the impeller is accomplished with an inverted motor for magnetically driving of the impeller and maintenance of the axial running position of the impeller relative to the housing. In an alternative embodiment, the axis of the rotor housing is radially displaced relative to the axes of drive element of the motor and the motor housing.

REFERENCES:
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patent: 3608088 (1971-09-01), Dorman et al.
patent: 3647324 (1972-03-01), Rafferty et al.
patent: 3960468 (1976-06-01), Boorse et al.
patent: 4135253 (1979-01-01), Reich et al.
patent: 4382199 (1983-05-01), Isaacson
patent: 4625712 (1986-12-01), Wampler
patent: 4645733 (1987-02-01), Hauenstein
patent: 4688998 (1987-08-01), Olsen et al.
patent: 4704121 (1987-11-01), Moise
patent: 4714405 (1987-12-01), Schaefer et al.
patent: 4806080 (1989-02-01), Mizobuchi et al.
patent: 4812108 (1989-03-01), Kotera
patent: 5049134 (1991-09-01), Golding et al.

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