Dialysis apparatus and technique

Details Dialysis apparatus and technique Dialysis apparatus and technique

1977-08-25

1980-08-19

Spear, Jr., Frank A.

Liquid purification or separation

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

Responsive to fluid flow

73149, 210 87, 210 95, 210321B, B01D 300, B01D 1300

Patent

active

042183138

ABSTRACT:
Dialysis apparatus is arranged to enable convenient measuring of ultrafiltration rate from liquid, such as blood, that is to be dialyzed. Dialyzer can have, downstream of a dialysis chamber, a dialyzate passageway through which the ultrafiltration flow rate can be readily measured as by introducing a gas bubble into the dialyzate and timing its movement through the passageway. An air-injection attachment can be fitted to the dialyzer or to a dialyzate supply system, to inject the gas bubble for such measurement. Bubble injection can also be effected in a flow rate measuring passageway downstream of the dialyzer. Flow rates of dialyzate into and out of dialyzer can be compared to show ultrafiltration while dialyzing.

REFERENCES:
patent: 3669880 (1972-06-01), Marantz et al.
patent: 3844940 (1974-10-01), Kopf et al.
patent: 3946731 (1976-03-01), Lichtenstein
patent: 3976574 (1976-08-01), White
patent: 3990973 (1976-11-01), Boag et al.
patent: 4021341 (1977-05-01), Cosentino et al.

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