| http://www.w3.org/ns/prov#value | - A centrifugal blood pump used for heart-lung machines or the like comprising an impeller provided with pump vanes and a magnet means such as permanent magnets, a casing having an inlet port and an outlet port and rotatably accommodating the impeller, and a magnet drive means disposed outside the casing, wherein the impeller is supported by at least three balls above the bottom plate of the casing,
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