Left ventricle assist device (LVAD)
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United States of America Patent
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Dec 7, 2010
Issued Date -
N/A
app pub date -
Feb 27, 2007
filing date -
Feb 27, 2006
priority date (Note) -
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Abstract
A pump has an elongated shell with a generally elliptical shape, an outer convex surface and an inner concave surface. A peripheral side edge located between the inner and outer surfaces terminates in a bead edge. A flexible airtight membrane has a membrane edge bonded to the outer shell surface adjacent to the bead edge. Preforming the membrane edge looped with a maximum linear span of curvature that is greater than a maximal transverse linear extent of the bead edge, membrane operational wear during inflation and deflation cycles is reduced in the region around the bead edge. A process of forming a blood pump with a membrane preform is also provided.
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