Electric heating – Heating devices – With power supply and voltage or current regulation or...
Patent
1979-06-29
1982-02-02
Rubinson, Gene Z.
Electric heating
Heating devices
With power supply and voltage or current regulation or...
219506, 219505, 73362AR, 128214B, H05B 102
Patent
active
043141439
ABSTRACT:
An apparatus for warming blood and other parenteral fluids as they are infused through a disposable flow system includes a pair of heating elements which heat the blood as it passes through a warming bag provided in the flow system. The heating elements are recurringly switched on and off with a duty cycle dependent on both the temperature of the blood at the output of the warming bag and the temperature differential between the output and input of the bag to maintain the blood at a predetermined temperature independent of flow rate. A digital display and monitoring circuit provides a highly accurate digital indication of blood temperature and interrupts the application of power to the heating elements in the event the temperature exceeds a predetermined maximum level.
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Bilstad Arnold C.
Foley John T.
Baxter Travenol Laboratories Inc.
Cummings Eugene
Flattery Paul
Paschall Mark H.
Rubinson Gene Z.
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