Method of preparing a solution, in particular a dialysis or infusion solution
AssigneeFresenius Medical Care Deutschland GmbH
InventorsThomas Knerr, Wendelin Backhaus
Life of this patent
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Abstract
A method of preparing a solution is described, in particular a dialysis or infusion solution, and a storage system for preparing such a solution. An acid-reacting component comprising a solid acid and/or a solid salt which is water-soluble and is not hygroscopic, is dissolved in water in a first container and mixed with an alkaline-reacting bicarbonate solution in a second container. The quantity ratios are selected so that the acid and/or salt content does not exceed 6 mmol per liter of finished solution and the bicarbonate content does not exceed 40 mmol per liter of finished solution.
Claims19
A method of preparing a dialysis or infusion solution, comprising the steps of:
- dissolving in a first container an acid-reacting component comprising at least one of a solid acid and a solid salt, said acid-reacting component being water-soluble and non-hygroscopic;
- selecting quantity ratios of the acid-reacting component and an alkaline-reacting bicarbonate solution so that an acid-reacting component content does not exceed about 6 mmol per liter of solution, and an alkaline-reacting bicarbonate content does not exceed about 40 mmol per liter of solution;
- and
- mixing said dissolved acid-reacting component with the alkaline reacting bicarbonate solution in a second container.
A dialysis or infusion solution, comprising:
- an alkaline-reacting bicarbonate component;
- and
- an acid-reacting component comprising at least one of an acid and a salt,
- wherein the acid-reacting component is a water-soluble and non hygroscopic solid, and wherein the acid-reacting component concentration is less than about 6 mmol per liter of finished solution, and an alkaline-reacting bicarbonate concentration is less than about 40 mmol per liter of finished solution.
A storage system for preparing a dialysis or infusion solution, comprising:
- a first container having an acid-reacting component;
- and
- a second container having an alkaline-reacting bicarbonate component,
- wherein the acid-reacting component is formed of at least one of a solid acid and a solid salt which is water-soluble and not hygroscopic, and which has a buffer capacity resulting in a finished solution having an acid and salt concentration of no greater than about 6 mmol per liter of solution and a bicarbonate concentration of up to about 40 mmol per liter of solution.
Dependencies are inferred from the claim text.