Device for preparing dialysate for a dialysis machine
AssigneeGambro Lundia AB
InventorPaolo Rovatti
Life of this patent
Estimating the term…
Abstract
A device for preparing dialysate for a dialysis machine is provided with a cartridge (9) containing salts (S), a first line (6) for supplying purified water to the cartridge (9) to form a saturated solution in the said cartridge (9), a second lin (7) for supplying the said saturated solution from the cartridge (9) to the first line (6) and for mixing the saturated solution with the purified water and forming the dialysate, and a discharge line (18) for discharging the said saturated solution from the second line (7) and from the said cartridge (9) at the end of the dialysis treatment.
Claims8
A device for preparing a dialysis solution comprising:
- a first line having an inlet end connected to a supply of a solvent, an outlet end connected to a dialysate circuit, a first extraction point, a second extraction point located between the inlet end and the first extraction point, and an injection point;
- a cartridge containing at least one salt and having an inlet connected to the first extraction point and an outlet connected to the injection point;
- a branch connecting said cartridge inlet to the first extraction point for supplying the solvent to the cartridge and for forming a saturated solution of at least one salt and solvent;
- a second line connecting said cartridge outlet to said injection point for supplying said saturated solution from the cartridge to the first line and for mixing the saturated solution with the solvent;
- a pump located in said second line for circulating said saturated solution;
- a discharge line connected to the second line between the cartridge and the pump for discharging said saturated solution from the second line and from the cartridge;
- a Venturi tube connected to said discharge line for sucking said saturated solution from the second line and from the cartridge, said Venturi tube comprising a primary inlet, a primary outlet, and a secondary inlet, said discharge line being connected to said secondary inlet;
- and
- a supply line connected to said primary inlet and to said second extraction point for supplying a flow of solvent to the Venturi tube and for creating a pressure drop at the secondary inlet.
Dependencies are inferred from the claim text.