In a centrifugal flow blood pump, usable in left ventricular assist applications, blood is pumped from an inlet (16) to an outlet (22) by a primary impeller (18). A portion of the blood that enters the pump follows a secondary channel (24) where a secondary impeller (70) routes the blood to lubricate a bearing between an impeller assembly (14) and a post formed by a component of the pump housing. The unique shape of the secondary impeller (70) prevents blood stagnation and provides for a well-washed fluid bearing.
申请公布号
WO0172351(A3)
申请公布日期
2002.04.18
申请号
WO2001US40329
申请日期
2001.03.19
申请人
THE CLEVELAND CLINIC FOUNDATION;HORVATH, DAVID;GOLDING, LEONARD, A., R.;SMITH, WILLIAM, A.
发明人
HORVATH, DAVID;GOLDING, LEONARD, A., R.;SMITH, WILLIAM, A.