Patent ID: 8685244

Claim:
A disposable hemodialysis machine cartridge for use in a hemodialysis machine having a dialyser, the cartridge comprising: a blood flow path for carrying a volume of blood to be treated in the dialyser; and a dialysate flow path, isolated from the blood flow path, for delivering a flow of dialysate solution through the dialyser, the dialysate flow path including: a sterile water inlet which admits sterile water onto the cartridge from the hemodialysis machine; a first mixing pump having a pump chamber which receives a predetermined volume of sterile water, and a dispenser which dispenses into the pump chamber a predetermined volume of a first dialysate solution base, wherein the first mixing pump is operable to form a homogeneous mixture of sterile water and first dialysate solution base and pump the homogeneous mixture out of the pump chamber.