DEVICE FOR EXTRACORPOREAL BLOOD PURIFICATION Russian patent published in 2015 - IPC A61M1/30 

FIELD: medicine.

SUBSTANCE: present invention refers to extracorporeal blood purification. A device comprises a control unit controlling the arterial main opening and closing with simultaneous closing and opening of the venous main in a one-lumen instrument, an arterial main container, a venous main container, a sensor indicating if the amount of purified blood in the venous main container exceeds a threshold, a sensor indicating if the contaminated blood amount in the arterial main container is less than a threshold. An arterial main closing unit is used to close the arterial main with simultaneous opening of the venous main in response to signal A transmitted by the sensor to the arterial main closing unit. A venous main closing unit is used to close the venous main with simultaneous opening of the arterial main in response to signal B transmitted by the sensor to the venous main closing unit. A pump is used to pump over a phase volume V_phase at a pumping rate Q_BP. The control unit is configured to control the pumping rate Q_BP, if the actual supplied phase volume V_act deviates from V_nom, so that the mentioned deviation ΔV tends to zero.

EFFECT: device provides the adequate blood flow accompanying any problems, eg the tube bend.

8 cl, 4 dwg