Blood pump has liquid feed element in rotating hollow axle carrying rotor of collectorless 3-phase motor with permanent magnets driven by electrically regulated rotary field in stator coils

摘要

The implantable blood pump has a liquid feeding element (5) mounted in a rotating hollow axle carrying the rotor of a collectorless 3-phase motor with permanent magnets (4) driven by an electrically regulated rotary field in the stator windings (3). The hollow axle is simulated by a revolution rate varying in intervals.