MECHANISM FOR INCREASING STIFFNESS FOR A MAGNETIC BEARING, A MAGNETIC BEARING AND A BLOOD PUMP Russian patent published in 2022 - IPC F16C32/04 F16C39/06 A61M60/00 

FIELD: medical equipment.

SUBSTANCE: invention relates to a mechanism (23) for increasing stiffness for a magnetic suspension bearing (20), a magnetic suspension bearing (20) including a mechanism (23) for increasing stiffness, and a blood pump. The magnetic suspension bearing (20) contains a stator (21) having teeth (211) of the stator and a rotor (22) located in the stator (21). The mechanism (23) for increasing rigidity contains: a permanent magnet (231) of the rotor, a permanent magnet (232) of the stator, as well as an axial drive unit (233). The permanent magnet (231) of the rotor and the rotor (22) of the bearing (20) on a magnetic suspension form a rotor assembly that has an asymmetric design relative to the main plane (P) of the rotor (22). The mechanism (23) for increasing rigidity is designed so that the permanent magnet (232) of the stator generates a radial attractive force for the permanent magnet (231) of the rotor, and the axial drive unit (233) generates an axial repulsive force for the permanent magnet (231) of the rotor, while the magnitude of the axial repulsive force changes with a change in the axial distance between axial drive unit (233) and permanent magnet (231) of the rotor. The mechanism (23) for increasing stiffness can increase the torsional stiffness of the bearing rotor (20) on a magnetic suspension and contributes to the miniaturization of the bearing (20) on a magnetic suspension.

EFFECT: expansion of the range of equipment for blood circulation support.

19 cl, 7 dwg