Blood pump with disposable rotor assembly
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United States of America Patent
Stats
-
Feb 28, 1995
Grant Date -
N/A
app pub date -
Jan 21, 1993
filing date -
Jan 21, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A centrifugal blood pump features a pump assembly including a cylindrical barrel insertable into a motor stator. The barrel contains a motor rotor which is directly coupled to the pump's impeller. The barrel can be oriented and locked in the motor stator in many different angular orientations. Hemolysis is prevented in spite of high speed operation by reducing the clearance between the impeller and the impeller chamber, rounding the edges of the impeller blades, and providing a deflector to prevent blood from being impelled more than once around the impeller chamber periphery. An efficient releasable locking mechanism is also disclosed, as is a preferred method of assembling the pump assembly with close tolerances.
First Claim
Family
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Cited Art Landscape
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