HeartMate III: pump design for a centrifugal LVAD with a magnetically levitated rotor

A long-term, compact left ventricular assist device (LVAD), the HeartMate III, has been designed and fabricated, featuring a centrifugal pump with a magnetically levitated rotor. The pump has been optimized by in vitro testing to achieve a design point of 7 L/min against 135 mm Hg at high hydrodynam...

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Bibliographic Details
Published inASAIO journal (1992) Vol. 47; no. 4; p. 401
Main Authors Bourque, K, Gernes, D B, Loree, 2nd, H M, Richardson, J S, Poirier, V L, Barletta, N, Fleischli, A, Foiera, G, Gempp, T M, Schoeb, R, Litwak, K N, Akimoto, T, Watach, M J, Litwak, P
Format Journal Article
LanguageEnglish
Published United States 01.07.2001
Subjects
Animals
Cattle
Heart-Assist Devices
Magnetics
Prosthesis Design
Pulsatile Flow
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Summary:A long-term, compact left ventricular assist device (LVAD), the HeartMate III, has been designed and fabricated, featuring a centrifugal pump with a magnetically levitated rotor. The pump has been optimized by in vitro testing to achieve a design point of 7 L/min against 135 mm Hg at high hydrodynamic efficiency (30%) and to be capable of up to 10 L/min under such a load. Furthermore, the pump has demonstrated no mechanical failures, low hemolysis (4-10 mg/dl plasma free Hb), and low thrombogenicity during six (40, 27, 59, 42, 27, and 49-day) in vivo bovine studies.
ISSN:1058-2916
DOI:10.1097/00002480-200107000-00020