Centrifugal blood pump with impeller
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United States of America Patent
Stats
-
May 20, 1986
Grant Date -
N/A
app pub date -
Jul 9, 1984
filing date -
Jul 9, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A centrifugal blood pump has an impeller with a hub, a blade support ring and alternating long and short blades. A tapered seal between a pump housing wall and a hub of an impeller which provides a fluid tight seal interface surrounding a shaft. The long blades of the impeller have rear edges which are closer to the wall than is the seal interface and inner edges which extend from the rear edges to the hub. This provides high flow in the vicinity of the seal interface to enhance heat dissipation from the seal interface.
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