Patent ID: 6730233
Filing Date: 2004-05-04
Classification: A61M

Abstract:
A dialysis machine comprising:a filter having a blood compartment and a dialysis liquid compartment separated by a semi-permeable membrane; an extracorporeal blood circuit having an arterial pipe connected to an inlet of the blood compartment and a venous pipe connected to an outlet of the blood compartment; a dialysis liquid circuit having a supply pipe connected to an inlet of the dialysis liquid compartment and a drain pipe connected to an outlet of the dialysis liquid compartment; an infusion circuit having a pre-dilution pipe connected to the arterial pipe and a post-dilution pipe connected to the venous pipe; means for varying the flow of an infusion liquid in the pre-dilution pipe and in the post-dilution pipe, and control means for controlling the flow varying means so that the flow of the infusion liquid in the pre-dilution pipe and the post-dilution pipe matches a determined sequence, wherein the control means comprises means for determining the infusion sequence from at least one characteristic value correlated with concentration of the blood (CE) and/or filtration efficiency of the filter, said at least one characteristic value being selected from at least one of filtration factor (FF), mean transmembrane pressure (TMPave), and actual permeability of the membrane (Kuf).