Document Detail

Development of the pulsation device for rotary blood pumps.
MedLine Citation:
PMID:  16266306     Owner:  NLM     Status:  MEDLINE    
A rotary blood pump (RP) is desirable as a small ventricular assist device (VAD). However, an RP is nonpulsatile. We tried to develop a device that attaches a pulse to the RP. We also tried to develop a pulse-generating equipment that was not air-pressure driven. The ball screw motor was considered a candidate. The application of a small-sized shape memory alloy was also attempted. An electrohydraulic system was adopted, and actuator power was connected to the diaphragm. The diaphragm was placed on the outer side of the ventricle. Most RPs that have been developed all over the world drain blood from the ventricle. The wave of a pulse should be generated if a pulse is added by the drawn part. The output assistance from the outer side of the ventricle was attempted in animal experiments, and the device operated effectively. This device can be used during implantable operation of RP. This may serve as an effective device in patients experiencing problems in peripheral circulation and in the function of internal organs.
Tomoyuki Yambe; Yasuyuki Shiraishi; Kazumitsu Sekine; Mune-ichi Shibata; Tasuku Yamaguchi; Liu Hong Jian; Makoto Yoshizawa; Akira Tanaka; Hidetoshi Matsuki; Fumihiro Sato; You-ichi Haga; Masayoshi Esashi; Kouichi Tabayashi; Yoshinori Mitamura; Hiroshi Sasada; Shin-ichi Nitta
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Artificial organs     Volume:  29     ISSN:  0160-564X     ISO Abbreviation:  Artif Organs     Publication Date:  2005 Nov 
Date Detail:
Created Date:  2005-11-03     Completed Date:  2006-01-23     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  7802778     Medline TA:  Artif Organs     Country:  United States    
Other Details:
Languages:  eng     Pagination:  912-5     Citation Subset:  IM    
Department of Medical Engineering and Cardiology, Institute of Development, Aging and Cancer, Tohoku University, Sendai, Japan.
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MeSH Terms
Blood Flow Velocity / physiology*
Blood Pressure / physiology*
Equipment Failure Analysis
Heart-Assist Devices*
Prosthesis Design
Pulsatile Flow / physiology*

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

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