Device for preparing a treatment liquid by filtration

Details Device for preparing a treatment liquid by filtration Device for preparing a treatment liquid by filtration

1995-06-05

1997-12-30

Fortuna, Ana

Liquid purification or separation

Recirculation

Serially connected distinct treating or storage units

2102572, 21032169, 21032171, 21032172, 210 90, B01D 6306, B01D 3702

Patent

active

057025975

ABSTRACT:
A device for treatment of blood by extracorporeal circulation comprises a dialysis liquid circuit having a supply tube (9a, 9b) on which is arranged a filter (21) having a first chamber and a second chamber (22, 23) which are separated by a filtering membrane (24), the supply tube having a first portion (9a) connecting a dialysis liquid source (10) to an inlet of the first chamber (22), and a second portion (9b) having an end connected to an outlet of the second chamber (23) of the filter (21) and another end which can be connected to an inlet of a compartment (3) of a dialyzer (1) with semipermeable membrane (4). A feedback tube (25) connects the inlet of the first chamber (22) of the filter (21) to the outlet of the first chamber (22). A flushing pump (26) is arranged on the feedback tube (25) for circulating liquid in the first chamber (22) of the filter (21) and causing cleaning of the membrane (24) by tangential flushing.

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H. Klinkmann et al, "Investigation of the Permeability of Highly Permeable Polysulfone Membrane for Pyrogens", Contr. Nephrol., 46:174-183 (1985).

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