Blood circulation assistance device and the biological diagnostic device of the blood flow circulation state of using a continuous flow blood pump

摘要

The device comprises a current measuring unit (7) for measuring current flowing through a motor (4) for driving the pump (1) used as information corresponding to a blood flow rate through the pump and an amplitude detection unit (8) for detecting an amplitude of fluctuation of current flowing through the motor used as information corresponding to the magnitude of a flow rate amplitude due to flow rate fluctuation. The amplitude of this fluctuation is divided by an average current value to be output as an amplitude index. The revolutions of the motor (4) controlled so that an amplitude index output from the amplitude detection unit is a preset value can keep an auxiliary blood feeding in an optimum state matching a blood circulation state in an organism. The blood circulation auxiliary device uses a continuous blood flow pump (1) for auxiliary blood feeding to remove blood through a blood removing pipe (2) and drive out blood at a preset flow rate through a blood feed pipe (3).