| A cost-effective extracorporeal magnetically-levitated centrifugal blood pump employing a disposable magnet-free impeller. | |
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MedLine Citation:
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PMID: 22320054 Owner: NLM Status: In-Process |
Abstract/OtherAbstract:
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In the field of rotary blood pumps, contactless support of the impeller by a magnetic bearing has been identified as a promising method to reduce blood damage and enhance durability. The authors developed a two-degrees-of-freedom radial controlled magnetic bearing system without a permanent magnet in the impeller in order that a low-cost disposable pump-head for an extracorporeal centrifugal blood pump could be manufactured more easily. Stable levitation and contactless rotation of the 'magnet-free' impeller were realized for a prototype blood-pump that made use of this magnetic bearing. The run-out of the impeller position at between 1000 r/min and 3000 r/min was less than 40 microm in the radial-controlled directions. The total power consumption of the magnetic bearing was less than 1 W at the same rotational speeds. When the pump was operated, a flow rate of 5 l/min against a head pressure of 78.66 kPa was achieved at a rotational speed of 4000 r/min, which is sufficient for extracorporeal circulation support. The proposed technology offers the advantage of low-cost mass production of disposable pump heads. |
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Authors:
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W Hijikata; T Mamiya; T Shinshi; S Takatani |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Proceedings of the Institution of Mechanical Engineers. Part H, Journal of engineering in medicine Volume: 225 ISSN: 0954-4119 ISO Abbreviation: Proc Inst Mech Eng H Publication Date: 2011 Dec |
Date Detail:
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Created Date: 2012-02-10 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8908934 Medline TA: Proc Inst Mech Eng H Country: England |
Other Details:
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Languages: eng Pagination: 1149-57 Citation Subset: IM |
Affiliation:
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Tokyo Institute of Technology, Precision and Intelligence Laboratory, Yokohama, Japan. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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