Blood delivery instrument for regulating the amount of blood stored in an accumulator independent of the pumping operation
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United States of America Patent
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-
Aug 3, 1999
Grant Date -
N/A
app pub date -
Oct 3, 1996
filing date -
Oct 3, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A blood reservoir includes a blood tank, a blood accumulator connected in fluid communication with an outlet of the tank for receiving blood from the tank, and a pumping device for driving the accumulator to displace blood out of the accumulator. The accumulator typically in the form of a flexible bag is adapted to store blood in an amount proportional to the volume of blood in the tank when the volume of blood in the tank is reduced below a predetermined value. The pumping device is operated for intermittent blood delivery and can regulate the amount of blood displaced out of the accumulator.
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