Patent ID: 7131956
Filing Date: 2006-11-07
Classification: A61M

Abstract:
1. A method for controlling a dialysis machine comprising the following steps: providing a filter having a first and a second compartment separated by a semi-permeable membrane; connecting to the first compartment a first circuit for a liquid, said liquid including a liquid component, a cellular component that is retained by the membrane, and solutes that pass through the membrane; connecting to the second compartment a second circuit for a dialysis fluid; circulating the liquid to be filtered in the first compartment of the filter; causing a controlled flow of the liquid component and of the solutes through the membrane; determining a value of a first parameter correlated with the controlled flow of the liquid component through the membrane; determining a value of a second parameter correlated with the flow of the liquid component at an inlet of the first compartment, said second parameter being at least one selected in the group comprising: hematocrit, hemoglobin, blood viscosity, blood electrical conductivity, and blood density; calculating a filtration factor as a function of the value of the first and second parameters; and controlling the flow of the liquid component through the membrane or an inlet flow of the liquid to be filtered as a function of the filtration factor.