The invention discloses a blood
passive control suspension bearing applied to an implantable
centrifugal blood pump, which is a novel
blood pump supporting device, wherein annular permanent
magnet steel is arranged on a rotor, an
electromagnetic coil is fixed on a
stator, the top and the bottom of the
stator are provided with spiral grooves, an inner ring of the
stator is provided with an arc-shaped groove, the upper top surface of the rotor is provided with an
impeller which is arranged in a pump shell, and the pump shell is connected with the stator and a base into an integral body; and blood flows in from the inlet of the pump shell, most of the blood flows out from the outlet of the pump shell through the rotation of the
impeller, and a small amount of the blood passes through a circular hole in the center of the rotor, a gap between the lower surface of the rotor and the base, the spiral groove at the bottom of the stator, a gap between the rotor and the stator and the spiral groove on the top of the stator which form a secondary flow passage, and then converges with the blood at the outlet. The blood
passive control suspension bearing has a simple structure, can ensure less
bearing wear, small heat productivity and small
power consumption, and is advantageous for the
blood pump to be developed towards a light and portable direction.