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Use of Zirconia Ceramic in the DexAide Right Ventricular Assist Device Journal Bearing
Author(s) -
Saeed Diyar,
Horvath David J.,
Massiello Alex L.,
Ootaki Yoshio,
Benefit Stephen,
Golding Leonard A.R.,
Fukamachi Kiyotaka
Publication year - 2010
Publication title -
artificial organs
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.684
H-Index - 76
eISSN - 1525-1594
pISSN - 0160-564X
DOI - 10.1111/j.1525-1594.2009.00757.x
Subject(s) - cubic zirconia , stator , zirconium , bearing (navigation) , materials science , battery (electricity) , ceramic , titanium , power (physics) , mechanical engineering , composite material , engineering , computer science , metallurgy , physics , quantum mechanics , artificial intelligence
Our aim was to evaluate the potential use of zirconium oxide (zirconia) as a blood journal bearing material in the DexAide right ventricular assist device. The DexAide titanium stator was replaced by a zirconia stator in several blood pump builds, without changing the remaining pump hardware components. In vitro pump performance and efficiency were evaluated at a predetermined pump speed and flow. Motor power consumption decreased by 20%, and DexAide battery life was extended to over 12 h on two fully charged batteries. The zirconia stator was also successfully evaluated in a severe start/stop test pre‐ and postexposure of the zirconia to accelerated simulated biologic aging. This study's outcomes indicated the advantages of zirconia as an alternate journal bearing material for the DexAide device.