Device and process for regulating the sodium concentration in a dialysis liquid with a view to a prescription
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United States of America Patent
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Sep 26, 2000
Grant Date -
N/A
app pub date -
Aug 20, 1998
filing date -
Aug 21, 1997
priority date (Note) -
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Abstract
Dialysis apparatus including: structure (14) for preparing a dialysis liquid containing sodium, comprising structure (18) for regulating the sodium concentration; a dialysis liquid circuit comprising a feed line (12) and a discharge line (13), the feed line (12) having one end connected to the structure (14) for preparing dialysis liquid, and another end which can be connected to a dialyser (1), the discharge line (13) having an end which can be connected to the dialyser (1); structure (9, 10, 12) for infusing a patient with an infusion solution containing sodium and a substance A at determined concentrations [Na.sup.+ ]sol and [A]sol; structure (32) for determining the sodium concentration [Na.sup.+ ]dial of the dialysis liquid so that the patient's body tends towards a desired sodium concentration [Na.sup.+ ]des, as a function of the dialysance D of the dialyser (1) for sodium, of the desired sodium concentration [Na.sup.+ ]des inside the patient's body, of the infusion flow rate Qinf, and of the sodium concentration [Na.sup.+ ]sol of the infusion solution; control structure (32) for driving the structure (18) for regulating the sodium concentration of the dialysis liquid such that this concentration is equal to the determined concentration [Na.sup.+ ]dial.
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