LAROSE, JEFFREY A.,SHAMBAUGH, CHARLES R., JR.,TRICHI, KARTIKEYAN,MARQUIS, RICHARD A.,WHITE, DANIEL G.
申请号：
CA2624704
公开号：
CA2624704C
申请日:
2006.06.02
申请国别(地区):
CA
年份:
2014
代理人:
摘要：
An axial-flow blood pump for pumping blood includes a substantiallycylindrical outer enclosure. A tubular housing concentric with and locatedwithin the outer enclosure has at one end an inlet and at an opposite end anoutlet. A motor stator is concentric with and located between the outerenclosure and the tubular housing. An impeller is concentric with and locatedwithin the tubular housing. The impeller is suspended in operation by acombination of passive magnetic forces between magnets within the impeller ormagnetized regions of the impeller and the motor stator and hydrodynamicthrust forces generated as blood flows between the tubular housing and aplurality of hydrodynamic thrust bearing surfaces located on the impeller. Avolute may be in fluid-tight connection with the outlet of the tubular housingfor receiving blood in the axial direction and directing blood in a directionnormal to the axial direction. The volute has a flow-improving memberextending axially from the volute and into and coaxially with the tubularhousing.
