Rotary kinetic fluid motors or pumps – With shaft connected fluid force subjected thrust balancing...
Reexamination Certificate
2011-07-12
2011-07-12
Look, Edward (Department: 3745)
Rotary kinetic fluid motors or pumps
With shaft connected fluid force subjected thrust balancing...
C415S900000, C604S006110
Reexamination Certificate
active
07976271
ABSTRACT:
A rotary blood pump includes a casing defining a pumping chamber. The pumping chamber has a blood inlet and a tangential blood outlet. One or more motor stators are provided outside of the pumping chamber. A rotatable impeller is within the pumping chamber and is adapted to cause blood entering the pumping chamber to move to the blood outlet. The impeller has one or more magnetic regions. The impeller is radially constrained in rotation by magnetic coupling to one or more motor stators and is axially constrained in rotation by one or more hydrodynamic thrust bearing surfaces on the impeller.
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LaRose Jeffrey A.
Shambaugh Charles R.
Cooper & Dunham LLP
Ellis Ryan H
Heartware, Inc.
Look Edward
White John P.
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