Electric resistance heating devices – Heating devices – Continuous flow type fluid heater
Patent
1990-05-09
1994-03-22
Reynolds, Bruce A.
Electric resistance heating devices
Heating devices
Continuous flow type fluid heater
604114, 392379, A61F 700
Patent
active
052972348
ABSTRACT:
The temperature of bags of blood or blood components is varied by directing a heated or refrigerated flow of air through vents (138) of pairs of opposing ducts (130A, 130B) longitudinally spaced across gaps to present thermal processing chambers (136) into which the bags are received. The vents are centrally located on vertical tubes (132) laterally separated by vertical air return slots (135), and act to direct the airflow substantially perpendicular and with turbulence against the bags. In a described thermal processing unit (110), the spacings of the vents and tubes are chosen to match the corresponding spacing of vertical tubular chambers (62) of a preferred bag (10) with which the unit (110) can be used. A central system automatically regulates airflow temperature in accordance with bag internal core temperature measurements taken externally of the bags by a sensor (140) having a sensing tip (142) that is pressed inwardly into bag flexible sheet material (11, 12) when airflow is present, and retracted when airflow is stopped.
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Beard John R.
Duncan Alexander
Harms Frank H.
Franz Warren L.
Jeffery John A.
LifeSource Advanced Blood Bank Systems, Inc.
Reynolds Bruce A.
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