Liquid purification or separation – Flow – fluid pressure or material level – responsive – Discharge of treated material
Patent
1984-01-27
1987-12-15
Richman, Barry S.
Liquid purification or separation
Flow, fluid pressure or material level, responsive
Discharge of treated material
2103213, 210929, 422 44, A61M 114, A61M 134, B01D 1300
Patent
active
047131713
ABSTRACT:
Apparatus for removing water from blood, advantageously by the single-needle method, in which by means of an air-operated bellows pump blood is sucked into an expandable pump chamber and thereafter water is forced into a hemofilter and collected in an ultrafiltrate measuring chamber to which a collecting bag is connected. The inlet and the outlet of the ultrafiltrate measuring chamber to which a collecting bag is connected. The inlet and the outlet of the ultrafiltrate measuring chamber can be opened and closed by clamps controlled in opposite phase and the amount of ultrafiltrate collected in the ultrafiltrate measuring chamber can be controlled and determined. The ultrafiltrate measuring chamber is divided by a hose-like wall into two chamber portions, one chamber portion receiving filtrate and the other chamber portion being adapted in a preferred embodiment to receive infusion solution. Thus, the infusion solution can be proportioned and supplied to the patient in volume equivalent manner.
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Delahunty C. M.
Fresenius AG
Richman Barry S.
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