Intravascular blood pump
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United States of America Patent
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Jan 24, 2017
Grant Date -
Feb 19, 2015
app pub date -
Feb 14, 2013
filing date -
Feb 16, 2012
priority date (Note) -
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Abstract
An intravascular blood pump having a drive section (11), a catheter (14) fastened to the drive section proximally and a pump section (12) fastened to the drive section distally possesses an electric motor (21) whose motor shaft (25) is mounted in the drive section (11) with two radial sliding bearings (27, 31) and an axial sliding bearing (40). During operation, purge fluid is conveyed through the bearing gap of the axial sliding bearing (40) and further through the radial sliding bearing (31) at the distal end of the drive section (11). The purge fluid is highly viscous, for example 20% glucose solution.
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