Low priming volume centrifugal blood pump

Details Low priming volume centrifugal blood pump Low priming volume centrifugal blood pump

1992-07-21

1994-03-01

Hafer, Robert A.

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

415206, 604151, A61M 5142

Patent

active

052902366

ABSTRACT:
A low priming volume centrifugal pump comprising a disc shaped impeller having opposite faces and an inlet hole centrally disposed therein. The impeller has flow channels disposed on at least one of the faces of the impeller which radiate outward from said inlet hole. The volume of the flow channels is small relative to the total impeller envelope volume providing for efficient momentum transfer with a minimum of turbulence and backflow Thus, priming volume is reduced and flow within the pump is more efficient. The pump can be used as stand alone device, or it can be integrated with a blood oxygenator into a common housing.

REFERENCES:
patent: 312788 (1885-02-01), Yellott
patent: 700224 (1902-05-01), McRae
patent: 865900 (1907-09-01), Hunsaker
patent: 1022425 (1912-04-01), Kuechler
patent: 1372532 (1921-03-01), Monberg
patent: 1986836 (1935-01-01), MacNeille
patent: 2636442 (1953-04-01), Roth
patent: 3489340 (1970-01-01), Holzhausen
patent: 4253798 (1981-03-01), Sugiura
patent: 4826401 (1989-05-01), Clark et al.
patent: 5017103 (1991-05-01), Dahl
patent: 5106263 (1992-04-01), Irie

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