| 摘要 |
An intravascular blood pump designed to be advanced through the blood vessel system of the patient, comprises a housing ( 15 ) accommodating an electric motor ( 12 ), the proximal end of the housing ( 15 ) being connected to a catheter ( 23 ) and the distal end thereof carrying a pump ( 11 ). The electric motor ( 12 ) includes a stator winding ( 17 ) forming a load-bearing component of the housing ( 15 ). The stator winding ( 17 ) is embedded in a matrix made of synthetic resin. The housing ( 15 ) is of an ironless design without any magnetic reflux device. The motor is operated with a rotational speed of about 50,000 upm. The magnetic stray field generated with such high frequencies does not disturb the cardiac rhythm of the patient. The motor can be given a compact size and thus has a high mechanical output power. |
