Liquid purification or separation – Flow – fluid pressure or material level – responsive – Maintaining stream pressure or flow
Patent
1978-12-04
1981-01-06
Hart, Charles N.
Liquid purification or separation
Flow, fluid pressure or material level, responsive
Maintaining stream pressure or flow
210472, 2103213, 2104162, B01D 3100
Patent
active
042435307
ABSTRACT:
A haemofiltration apparatus includes a combined blood pump (1a) and filtrate pump (1b). The pressure on the inlet side of the filtrate pump may be adjusted by a cone valve (14) mounted on a diaphragm (12) which opens to admit air when the inlet pressure falls below a predetermined value which is set by a valve spring (16) provided with an adjustment screw (15). The other side of the diaphragm may be connected to the atmosphere or to an air trap (6) in the blood pump circuit.
REFERENCES:
patent: 3140726 (1964-07-01), Arenhold
patent: 3212642 (1965-10-01), Kylstra
patent: 3242942 (1966-03-01), Gould
patent: 3520298 (1970-07-01), Lange
patent: 3626670 (1971-12-01), Pecker
patent: 3939069 (1976-02-01), Granger et al.
patent: 3946731 (1976-03-01), Lichtenstein
patent: 4060485 (1977-11-01), Eaton
Hamilton, R. et al., "Blood Cleansing By Diafiltration in Uremic Dog and Man", A.S.A.I.O. vol. 17, 1971, pp. 259-265.
Perry, R. H. et al., Chemical Engineers Handbook, 5th Edition, McGraw Hill Book Co., 1973, pp. 22-88 to 22-91.
Henderson, L. et al., "Uremic Blood Cleaning by Diafiltration . . .", A.S.A.I.O., vol. 16, 1970, pp. 107-114.
Lehnhoff Kurt
Schael Wilfried
Dr. Eduard Fresenius Chemisch-pharmazeutische Industrie KG, Appa
Fasse W. G.
Gould D. F.
Hart Charles N.
Sadowski David R.
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