Pulsatile flow hemodialysis

Details Pulsatile flow hemodialysis Pulsatile flow hemodialysis

1988-02-17

1990-11-06

Jones, W. Gary

Liquid purification or separation

Casing divided by membrane into sections having inlet

With membrane cleaning or sterlizing means

21032172, 2104161, B01D 6128

Patent

active

049684221

ABSTRACT:
The use of a pulsatile flow blood pump in a hemodialysis system is disclosed. In comparison to the customary steady flow blood pump of the prior art, the pulsatile flow blood pump clears urea, a low molecular weight molecule, from the bood approximately three times as fast as does the steady flow roller pump commonly used on a worldwide basis for hemodialysis. Large molecules, such as vitamin B.sub.12 are also cleared more rapidly by the pulsatile flow pump, but less rapidly than the smaller molecules. Total time of dialysis is reduced and the results obtained by using the pulsatile flow blood pump are more physiologic, in that the more harmful molecules, urea, are selectively cleared more rapidly while the larger more desirable molecules, vitamin B.sub.12, are retained.

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patent: 4370983 (1983-02-01), Lichtenstein
patent: 4492531 (1985-01-01), Kenji et al.
patent: 4662829 (1987-05-01), Nehring

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