LaRose, Jeffrey A.,Shambaugh Jr., Charles R.,Trichi, Kartikeyan,Marquis, Richard A.,White, Daniel G.
申请号：
AU2006297779
公开号：
AU2006297779A8
申请日:
2006.06.02
申请国别(地区):
AU
年份:
2013
代理人:
摘要：
An axial-flow blood pump for pumping blood includes a substantially cylindricalouter enclosure. A tubular housing concentric with and located within the outerenclosure has at one end an inlet and at an opposite end an outlet. A motor statoris concentric with and located between the outer enclosure and the tubular housing.An impeller is concentric with and located within the tubular housing. The impelleris suspended in operation by a combination of passive magnetic forces betweenmagnets within the impeller or magnetized regions of the impeller and the motorstator and hydrodynamic thrust forces generated as blood flows between the tubularhousing and a plurality of hydrodynamic thrust bearing surfaces located on theimpeller. A volute may be in fluid-tight connection with the outlet of the tubularhousing for receiving blood in the axial direction and directing blood in a directionnormal to the axial direction. The volute has a flow-improving member extendingaxially from the volute and into and coaxially with the tubular housing.
