Document Detail

Feasibility of using piezohydraulic pumps as motors for pediatric ventricular assist devices.
MedLine Citation:
PMID:  23367196     Owner:  NLM     Status:  MEDLINE    
The feasibility of using piezohydraulic pumps in drivers for pediatric ventricular assist devices is presented in this article. In this study a 0.5 kg piezohydraulic pump is incorporated into a ventricular assist device driver to drive a pulsatile pediatric 30 mL stroke ventricular assist device (VAD). The driver consists of a piezoelectric-hydraulic hybrid actuator and volume amplification section. Mechanical tests were performed on the pump and the hybrid actuator and a maximum power output of 5.4 W and 1.6 W were recorded respectively. The driver was tested running at multiple heart rates from 50-80 beats per minute (BPM) in an in-vitro bench top mock circulation to characterize the performance of the driver under a circulatory load. The maximum drive pressure output by the driver was 35 kPa. Peak flow rate from the VAD driven by the new driver was 6 L/min against a 10 kPa back pressure. Mean flow rate from the VAD outlet was 2.35 L/min for 80 BPM operation.
John Valdovinos; Daniel S Levi; Ryan Williams; Gregory P Carman
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.    
Journal Detail:
Title:  Conference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual Conference     Volume:  2012     ISSN:  1557-170X     ISO Abbreviation:  Conf Proc IEEE Eng Med Biol Soc     Publication Date:  2012  
Date Detail:
Created Date:  2013-01-31     Completed Date:  2013-07-24     Revised Date:  2014-08-21    
Medline Journal Info:
Nlm Unique ID:  101243413     Medline TA:  Conf Proc IEEE Eng Med Biol Soc     Country:  United States    
Other Details:
Languages:  eng     Pagination:  5590-4     Citation Subset:  IM    
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MeSH Terms
Equipment Design
Feasibility Studies
Heart-Assist Devices*

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

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