Patent ID: 9446181
Filing Date: 2016-09-20
CPC Classification: A61M

Claim Text:
1. A method of treating blood in a blood treatment apparatus including: a blood treatment unit configured to receive untreated blood and fresh blood treatment fluid, and emit treated blood and used blood treatment fluid, the blood being passed on a blood side of a semi-permeable membrane and the blood treatment fluid being passed on a fluid side of said semi-permeable membrane in the unit; at least one fluid pump configured to pass blood treatment fluid through the blood treatment unit; and at least one blood pump configured to extract untreated blood from a blood source, pass extracted blood through the blood treatment unit and deliver treated blood to a target vessel, the method comprising: pumping blood by the at least one blood pump while driving the at least one blood pump with blood treatment fluid pumped by the at least one fluid pump, during a first period, the pumping by the at least one blood pump extracts the untreated blood from the blood source and during a second period the treated blood is pumped by the at least one blood pump into the target vessel, and controlling a trans-membrane flow between the blood side and the fluid side of the blood treatment unit through the semi-permeable membrane.