Document Detail

Use of zirconia ceramic in the DexAide right ventricular assist device journal bearing.
MedLine Citation:
PMID:  19821816     Owner:  NLM     Status:  MEDLINE    
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.
Diyar Saeed; David J Horvath; Alex L Massiello; Yoshio Ootaki; Stephen Benefit; Leonard A R Golding; Kiyotaka Fukamachi
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Publication Detail:
Type:  Journal Article     Date:  2009-10-11
Journal Detail:
Title:  Artificial organs     Volume:  34     ISSN:  1525-1594     ISO Abbreviation:  Artif Organs     Publication Date:  2010 Feb 
Date Detail:
Created Date:  2010-04-27     Completed Date:  2010-07-21     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7802778     Medline TA:  Artif Organs     Country:  United States    
Other Details:
Languages:  eng     Pagination:  146-9     Citation Subset:  IM    
Department of Biomedical Engineering, Lerner Research Institute, The Cleveland Clinic, Cleveland, OH 44195, USA.
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MeSH Terms
Assisted Circulation
Dental Porcelain
Equipment Design
Heart-Assist Devices*
Materials Testing*
Pulsatile Flow
Reg. No./Substance:
0/Ceramics; 12001-21-7/Dental Porcelain; 1314-23-4/zirconium oxide; 7440-67-7/Zirconium

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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