DEVICE FOR PUMPING BLOOD IN AN EXTRACORPOREAL CIRCUIT

摘要

The invention relates to a device for pumping blood in an extracorporeal circuit, comprising a centrifugal pump (1), which suctions the blood to be pumped via a venous hose line (2) connected to the suction side of the pump and releases it via an arterial hose line (3) connected to the release side of the pump, which device comprises a flow sensor (5), which detects the released quantity on the release side of the pump and emits a measurement signal corresponding to the released quantity, a pressure sensor (6), which detects the pressure on the release side of the pump and emits a measurement signal corresponding to the pressure, and an evaluation unit (4), to which the measurement signals of the sensors are fed and which determines a value corresponding to the pressure on the suction side of the pump, taking into consideration the two measurements signals and the rotational speed of the centrifugal pump.