Device and process for regulating the sodium concentration in a dialysis liquid with a view to a prescription
First Claim
1. Dialysis apparatus comprising:
- means for preparing a dialysis liquid containing sodium, comprising means for regulating the sodium concentration of the liquid;
a dialysis liquid circuit comprising a feed line and a discharge line, the feed line having one end connected to the means for preparing dialysis liquid, and another end which can be connected to a dialyser, the discharge line having an end which can be connected to the dialyser;
means for infusing a patient with an infusion solution containing sodium and a substance A at determined concentrations (Na+)sol and (A)sol;
means for determining the sodium concentration (Na+)dial of the dialysis liquid so that the patient'"'"'s body tends towards a desired sodium concentration (Na+)des, as a function of the dialysance D of the dialyser for sodium, of the desired sodium concentration (Na+)des inside the patient'"'"'s body, of the infusion flow rate Qinf, and of the sodium concentration (Na+)sol of the infusion solution;
control means for driving the means for regulating the sodium concentration of the dialysis liquid such that the concentration is equal to the determined concentration (Na+)dial.
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Accused Products
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+ ]sol and [A]sol;
structure (32) for determining the sodium concentration [Na+ ]dial of the dialysis liquid so that the patient'"'"'s body tends towards a desired sodium concentration [Na+ ]des, as a function of the dialysance D of the dialyser (1) for sodium, of the desired sodium concentration [Na+ ]des inside the patient'"'"'s body, of the infusion flow rate Qinf, and of the sodium concentration [Na+ ]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+ ]dial.
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Citations
15 Claims
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1. Dialysis apparatus comprising:
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means for preparing a dialysis liquid containing sodium, comprising means for regulating the sodium concentration of the liquid; a dialysis liquid circuit comprising a feed line and a discharge line, the feed line having one end connected to the means for preparing dialysis liquid, and another end which can be connected to a dialyser, the discharge line having an end which can be connected to the dialyser; means for infusing a patient with an infusion solution containing sodium and a substance A at determined concentrations (Na+)sol and (A)sol; means for determining the sodium concentration (Na+)dial of the dialysis liquid so that the patient'"'"'s body tends towards a desired sodium concentration (Na+)des, as a function of the dialysance D of the dialyser for sodium, of the desired sodium concentration (Na+)des inside the patient'"'"'s body, of the infusion flow rate Qinf, and of the sodium concentration (Na+)sol of the infusion solution; control means for driving the means for regulating the sodium concentration of the dialysis liquid such that the concentration is equal to the determined concentration (Na+)dial. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. Process for regulating the sodium concentration of a dialysis liquid to a determined value (Na+)dial so that a patient'"'"'s body tends towards a desired sodium concentration (Na+)des, the patient'"'"'s blood and the dialysis liquid being circulated on either side of a semipermeable membrane of a dialyser, the patient furthermore receiving an infusion of a solution containing sodium and a substance A at determined concentrations (Na+)sol and (A)sol;
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the process comprising the steps of; determining the sodium concentration (Na+)dial of the dialysis liquid as a function of the dialysance D of the dialyser for sodium, of the desired sodium concentration (Na+)des inside the patient'"'"'s body, of the infusion flow rate Qinf, and of the sodium concentration (Na+)sol of the infusion solution; and adjusting the sodium concentration of the dialysis liquid to the determined concentration (Na+)dial. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
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Specification