Device and method for controlling the balance of fluids in an ex

Details Device and method for controlling the balance of fluids in an ex Device and method for controlling the balance of fluids in an ex

1994-03-21

1995-11-28

Kim, John

Liquid purification or separation

Processes

Including controlling process in response to a sensed condition

210 85, 210 90, 210 97, 210130, 210134, 210137, 210254, 210258, 21032165, 210739, 210645, 210646, 210650, 210929, 604 4, 604 5, 604 6, B01D 6100, B01D 6118, B01D 6122, B01D 6132

Patent

active

054704839

ABSTRACT:
A device and method are provided for controlling the balance of fluids during an extracorporeal blood treatment session, according to which treatment, a certain quantity of liquid is withdrawn from the blood which is compensated for by the injection of a substitute liquid into the extracorporeal circuit. A recirculation circuit is provided and pressure is monitored. A pressure deviation within the recirculation circuit reflects a change in the balance between the quantity of liquid withdrawn from the blood and the quantity of liquid injected into the blood, and injection and/or withdrawal rates are altered to obtain a desired balance. The device and method are especially applicable to haemofiltration, haemodiafiltration and plasmapheresis.

REFERENCES:
patent: 4191182 (1980-03-01), Popovich et al.
patent: 4204957 (1980-05-01), Weickhardt
patent: 4711715 (1987-12-01), Polaschegg
patent: 4713171 (1985-12-01), Polaschegg
patent: 4894164 (1990-01-01), Polaschegg
patent: 4964976 (1990-10-01), Lysaght et al.
patent: 5178763 (1993-01-01), Delaunay
patent: 5211849 (1993-05-01), Kitaevich et al.

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