| abstract |
A blood pump comprising: a pump housing, and anrotor mounted for rotation within the housing. The rotornhas a rotational axis and an attached impeller. Thenblood pump has a blood flow path that passes about thenrotor, with the rotor having a peripheral edgensurrounding an end face. The end face has a profilednsurface that augments blood flow radially outwardly fromna central portion of the end face toward the peripheralnedge as the rotor rotates when compared with a flat endnface. |