Temperature-controlled electric device for heating transfusion f

Details Temperature-controlled electric device for heating transfusion f Temperature-controlled electric device for heating transfusion f

1987-03-24

1988-09-20

Bartis, Anthony

Electric heating

Heating devices

Combined with container, enclosure, or support for material...

165 46, 219303, 219305, 219308, 219328, 219330, H05B 102, A61F 700, B67D 562, F24H 112

Patent

active

047727780

ABSTRACT:
Device for heating transfusion fluids, such as blood and drugs in solution, prior to their intravenous drop-by-drop introduction to patients, which comprises a case having therein a heater and an electric circuit, a heating plate disposed in a front face of the case and having, on its surface, a groove following a winding course at its middle portion and adapted to receive therein a transfusion fluid conduit, and a lid for closing said case on the side of its front face. The heater is connected to the back side of the heating plate, so as to heat the heating plate. The electric circuit includes a fluid-temperature thermistor, a heater-temperature thermistor, and a heating-plate temperature thermistor. Electric input to the heater is controlled on the basis of the temperature determined by the fluid-temperature thermistor, so that the fluid through the conduit may have its predetermined temperature. The electric input to the heater is interrupted when the temperature of the heater-temperature thermistor or of the heating-plate temperature thermistor has increased beyond a certain predetermined value, thus preventing the fluid from being overheated even temporarily or partly.

REFERENCES:
patent: 3485245 (1969-12-01), Lahr et al.
patent: 4167663 (1979-09-01), Granzow et al.
patent: 4293762 (1981-10-01), Ogawa
patent: 4309592 (1982-01-01), Le Boeuf
patent: 4473739 (1984-09-01), Scheiwe et al.
patent: 4532414 (1985-07-01), Shah et al.
patent: 4680445 (1987-07-01), Ogawa

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