Apparatus and method for automatically controlling hemodialysis

Details Apparatus and method for automatically controlling hemodialysis Apparatus and method for automatically controlling hemodialysis

1978-11-06

1980-06-24

Wyse, Thomas G.

Liquid purification or separation

With alarm, indicator, register, recorder, signal or...

Responsive to fluid flow

210188, 210143, 210321B, 137 99, B01D 1900, G05D 1100, B01D 1104

Patent

active

042093910

ABSTRACT:
Apparatus for and method of automatically controlling the quantity and rate of liquid removed from blood during hemodialysis. The apparatus supplies dialysate in a single pass system in a closed, controlled volume circuit which includes an above atmospheric pressure portion and a below atmospheric pressure portion. The above atmospheric pressure portion includes a pair of chambers for alternate supply to and removal of the dialysate from the below atmospheric pressure portion which contains an artificial kidney and a third means for removing fresh dialysate from the above atmospheric pressure portion; the below atmospheric pressure portion includes means which isolates the kidney containing portion and restores pressure to spent dialysate to a pressure at least equal to or higher than the pressure of the dialysate fed into said closed circuit; the above atmospheric circuit also includes means for removing gas from the spent dialysate prior to filling the spent dialysate removal chamber before discard.

REFERENCES:
patent: 4008003 (1977-02-01), Pinkerton
patent: 4037616 (1977-07-01), Pinkerton
patent: 4054522 (1977-10-01), Pinkerton
patent: 4085046 (1978-04-01), Saporito, Jr.
patent: 4113614 (1978-09-01), Rollo et al.
patent: 4118314 (1978-10-01), Yoshida
patent: 4119113 (1978-10-01), Meginniss

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