Liquid purification or separation – Processes – Liquid/liquid solvent or colloidal extraction or diffusing...
Patent
1985-12-16
1990-02-06
Spear, Frank
Liquid purification or separation
Processes
Liquid/liquid solvent or colloidal extraction or diffusing...
210 90, 21032165, 21032175, B01D 1300
Patent
active
048986755
ABSTRACT:
A system, method and device for continuously fractionating blood in situ. The fractionating device is connected in a closed loop to the donor and includes interleaved blood plates and blood fraction plates separated by a semipermeable membrane. Grooves in the plates direct blood flow and blood fraction collection. Uniform distribution among the plates and intraplate is obtained by manifolds.
The input and output pressures of the blood pump are sensed and inputed to an microprocessor, into which donor data including weight, sex, and hematocrit is also keyed by the user. The microprocessor operates under program control to calculate, based on the donor data, the amount of plasma to be collected and the amount of anticoagulant to be added. The program controls the operation of the extracorporeal devices, regulates the operating parameters, and stops the procedure when the predetermined amount of plasma has been obtained.
REFERENCES:
patent: 4464172 (1984-08-01), Lichtenstein
patent: 4469593 (1984-09-01), Ishihara et al.
patent: 4582598 (1986-04-01), Bilstad et al.
patent: 4657529 (1987-04-01), Prince et al.
patent: 4668400 (1987-05-01), Veech
patent: 4729829 (1988-03-01), Duggins
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