Kilpatrick Townsend & Stockton LLP
Centrifugal pump device
This centrifugal blood pump device comprises an impeller which is provided within a blood chamber, a permanent magnet which is provided to one surface of the impeller, a permanent magnet which is provided to the inner wall of the blood chamber, permanent magnets which are provided to the other surface of the impeller, and multiple sets of magnetic bodies and coils, which are disposed within a motor chamber and which rotationally drive the impeller with a partition wall located between the impeller and the sets of magnetic bodies and coils. The magnetic bodies are formed in a solid cylindrical shape. The configuration enables the impeller to be smoothly activated for rotation by controlling a coil current.
Thoratec Corporation
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A61M A61M A61M A61M A61M F04D A61M F04D F04D F04D F04D A61M
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Hiroyuki Ken
Yamada Sugiura