Ultrafiltration regulation by differential weighing

Details Ultrafiltration regulation by differential weighing Ultrafiltration regulation by differential weighing

1984-02-02

1988-03-01

Spear, Frank

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

210 85, 2103213, 210929, 21032171, B01D 1300

Patent

active

047284331

ABSTRACT:
Hemodialysis ultrafiltration apparatus comprises a hemodialyzer, a supply line for supplying fresh dialysate to the hemodialyzer. A drain line is provided for removing spent dialysate from the hemodialyzer. The dialyzer is adapted to be connected to a patient so that the patient's blood may be supplied to and removed from the hemodialyzer. A weighing mechanism allows a fixed amount of fresh dialysate, by weight, to flow through the hemodialyzer. Spent dialysate emerging from the hemodialyzer is then weighed by the weighing device to determine the weight differential therebetween to monitor and control the amount and rate of ultrafiltrate removed from blood in the hemodialyzer.
A method of hemodialytic ultrafiltration is carried out substantially in accordance with the above-described apparatus.

REFERENCES:
patent: 4132644 (1979-01-01), Kolberg
patent: 4178240 (1979-12-01), Pinkerton
patent: 4204957 (1980-05-01), Weickhardt
patent: 4324663 (1982-04-01), Hirel et al.
patent: 4582598 (1986-04-01), Bilstad et al.
Holmes, et al., "Removal of Fluid from the Patient During Hemodialysis", from Trans Amer. Soc. for Artif. Int. Organs, vol. 2, received in PTO 3-17-69, pp. 58-68.

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