Percutaneous axial flow blood pump
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United States of America Patent
Stats
-
Jul 31, 1990
Grant Date -
N/A
app pub date -
Feb 23, 1989
filing date -
Feb 23, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The reliability and compactness of a percutaneously insertable intravascular axial flow blood pump are improved by connecting the pump's rotor and drive cable through a resiliently extendable rotor extension. The rotor extension and drive cable fitting are so designed that the thrust bearing surfaces of the purge seal and cable fitting can be preloaded by strongly pulling the cable fitting against the resiliency of the rotor extension to move one of the bearings away from the other, then relaxing it to a predetermined preload, and finally immobilizing the bearing in the position corresponding to that preload.
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