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 wide range of flow conditions.
National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki, 305-8564, Japan. yamane@mech.kobe-u.ac.jp
Takashi
T
Yamane
Masahiro
M
Nishida
Hiroshi
H
Kawamura
Takayuki
T
Miyakoshi
Kenji
K
Yamazaki
D001783:Blood Flow Velocity; D004867:Equipment Design; D006353:Heart-Assist Devices; D006801:Humans; D013314:Stress, Mechanical