Electric blood warmer utilizing heating by condensation

Details Electric blood warmer utilizing heating by condensation Electric blood warmer utilizing heating by condensation

1990-01-05

1991-05-07

Reynolds, Bruce A.

Electric resistance heating devices

Heating devices

Continuous flow type fluid heater

392401, 392403, H05B 320

Patent

active

050138898

ABSTRACT:
An apparatus for warming refrigerated blood to physiologic temperature during transfusion at flow rates from zero to greater than 160 milliliters per minute. The apparatus consists primarily of two hollow metal rectangular box shaped heating units containing a water reservoir in equilibrium with a larger volume of water vapor. Heat is applied to the water reservoir, generating steam which condenses on one wall of each heating unit serving as a heating plate. Heat is then transferred by conduction to a thin metal cartridge or plastic pouch type conduit sandwiched between the two heating plates. Very high heat transfer coefficients maintain heating plates at constant temperature without the possibility of damage to blood by local overheating.

REFERENCES:
patent: 3879599 (1975-04-01), Kodaira

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