Pumps – With signal – indicator – or inspection means
Patent
1983-12-05
1985-02-26
Look, Edward K.
Pumps
With signal, indicator, or inspection means
340502, 340691, 604 67, 604123, F04B 4900
Patent
active
045015317
ABSTRACT:
An apparatus for the continuous flow fractionation of whole blood incorporates motor driven whole blood, anti-coagulant and replacement pumps, negative and positive pressure monitors, and a dual bubble detector which function in conjunction with a disposable single-use flow system and a hollow fiber filter to separate and collect plasma from whole blood. Operation of the pump motors, pressure monitors and bubble detector is controlled by a control circuit within the apparatus to provide one of several operator-selected operating modes, including run, prime and reinfuse modes. The control circuit provides an alarm which can be cancelled by the operator when certain system parameters fall outside of normal operating limits, and interrupts operation of the pumps when the parameters exceed maximum limits. A failsafe circuit independent of the control circuits interrupts power to the pump motors in the event the motors do not stop upon detection of a bubble or fluid absence in the flow system.
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Bilstad Arnold C.
Foley John T.
Baxter Travenol Laboratories Inc.
Cummings Eugene M.
Flattery Paul C.
Look Edward K.
Ryan Daniel D.
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