Motor assembly for catheter pump

摘要

A catheter pump is disclosed herein. The catheter pump can include a catheter assembly that comprises a drive shaft and an impeller coupled to a distal end of the drive shaft. A driven assembly can be coupled to a proximal end of the drive shaft within a driven assembly housing. The catheter pump can also include a drive system that comprises a motor and a drive magnet coupled to an output shaft of the motor. The drive system can include a drive assembly housing having at least one magnet therein. Further, a securement device can be configured to prevent disengagement of the driven assembly housing from the drive assembly housing during operation of the pump.

主权项

1. A catheter pump, comprising:
a catheter assembly comprising:
a drive shaft having a proximal end and a distal end;an impeller coupled with the distal end of the drive shaft; anda driven magnet assembly coupled with the proximal end of the drive shaft, the driven magnet assembly including a driven magnet housing having a driven magnet; a drive system comprising:
a motor having an output shaft; anda drive magnet assembly coupled with the output shaft, the drive magnet assembly including a drive magnet housing with a drive magnet disposed therein; and a securement device configured to secure the driven magnet housing into engagement with the drive magnet housing during operation of the pump, wherein the drive magnet and the driven magnet at least partially overlap along a rotational axis of the driven magnet.