Dialysis Machine Control
AssigneeQuanta Fluid Solutions Ltd.
InventorJames Coates
Life of this patent
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Abstract
A method of preparing a dialysate solution for hemodialysis, the method including the steps of providing a mixing pump comprising a pump chamber covered by an actuable membrane, the chamber having a first inlet for admitting water into the chamber, a second inlet for admitting dialysate base solution into the chamber, and an outlet from the chamber, the method including the further steps of providing pump means for dispensing a predetermined volume of dialysate solution base into the chamber at a first pressure, actuating the membrane to draw a volume of water or water mix into the mixing pump chamber at a second pressure, wherein the magnitude of the first pressure is higher than the magnitude of the second pressure so as to ensure the complete dispense of the dialysate solution base into the chamber.
Claims11
A method of preparing a dialysate solution for hemodialysis, the method comprising:
- providing a mixing pump comprising a pump chamber covered by an actuable membrane, the chamber having a first inlet for admitting water or a water mix into the chamber, a second inlet for admitting dialysate base solution into the chamber, and an outlet from the chamber;
- providing pump means for dispensing a predetermined volume of dialysate solution base into the chamber at a first pressure;
- and
- actuating the membrane to draw a volume of water or water mix into the mixing pump chamber at a second pressure;
- wherein the magnitude of the first pressure is higher than the magnitude of the second pressure so as to ensure the complete dispense of the dialysate solution base into the chamber.
A method of preparing a dialysate solution for hemodialysis, the method comprising:
- providing a mixing pump comprising a pump chamber covered by an actuable membrane, the chamber having a first inlet for admitting water or a water mix into the chamber, a second inlet for admitting dialysate base solution into the chamber, and an outlet from the chamber, providing pump means for dispensing dialysate solution base into the chamber via the second inlet;
- providing the water outlet, the base inlet and the pump outlet with respective valves to control flow there through;
- opening the second inlet valve, operating the pump means to dispense a predetermined volume of dialysate solution base into the chamber;
- closing the second inlet valve before the outlet valve is opened.
A method of preparing a dialysate solution for hemodialysis, the method comprising:
- providing a mixing pump comprising a pump chamber covered by an actuable membrane, the chamber having a first inlet for admitting water or a water mix into the chamber, a second inlet for admitting dialysate base solution into the chamber, and an outlet from the chamber in fluid communication with a balance pump chamber;
- and
- providing pump means for dispensing a predetermined volume of dialysate solution base into the chamber at a first pressure, wherein the volume of the mixing pump chamber is greater than the volume of the flow balance chamber.
Dependencies are inferred from the claim text.