Patent ID: 8298427
Filing Date: 2012-10-30
Classification: A61M

Abstract:
1. A method for controlling an apparatus for treating blood outside the human body, with a view to improving the operation of said apparatus, said apparatus comprising a semi-permeable membrane carrying out an exchange of solutes, referred to as dialysis, and of liquid, referred to as ultrafiltration, with the blood, said method comprising at least one iteration of the following steps: determination of a so-called instantaneous value, of an ultrafiltration coefficient corresponding to the ratio of an ultrafiltration flow rate to a difference in pressure, the so-called transmembrane pressure, on either side of said semi-permeable membrane, comparison of said instantaneous value with at least one previously determined characteristic value; and control of said treatment apparatus so as to reach a maximum value of said ultrafiltration coefficient, said control comprising a variation of the ultrafiltration flow rate up to a value corresponding to said maximum value of said ultrafiltration coefficient.