Liquid purification or separation – With alarm – indicator – register – recorder – signal or... – Fluid pressure responsive
Patent
1987-12-30
1990-12-25
Spear, Frank
Liquid purification or separation
With alarm, indicator, register, recorder, signal or...
Fluid pressure responsive
210104, 2101952, 21032184, 210456, B01D 6118
Patent
active
049800540
ABSTRACT:
A system, method and device for continuous mass transfer in fluids, such as blond. A mass transfer device is connected in a closed path between a blood source and a reservoir. Pumps and valves are provided to move the blood through the mass transfer device sequentially in a first path from the blood source to the reservoir and in a second pass from the reservoir to the blood source. Material may be added to the blood flowing from the source. The mass transfer device may be a fractionating device, In that case the system and method may be used for plasma collection, or for displacement of water preparatory to freezing of the blood, or for the formation of washed blood cells from either whole blood or thawed blood. The system and method may be used for hemodialysis, in which case the mass transfer device is a dialyzer.
The fractionating device includes interleaved blood plates and blood fraction collection plates separated by semipermeable membranes. The device is arranged with two separate passages therethrough, each comprising a pair of parallel blood flow channels; the passages being connected in series by external tubing.
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