Flow visualization for the implantable ventricular assist device EVAHEART®

The hemocompatibility for the recently approved ventricular assist device EVAHEART(®) was examined through flow visualization with a 300 % scale-up model. The absence of flow separations around the centrifugal vanes indicated that the curvature of the open vanes was suitable. The flow in the vane-shaft clearance was found to effectively produce sufficient shear stresses along the stationary shaft surface. The hemocompatibility was verified for a...