A - Human Necessities – 61 – M
Patent
A - Human Necessities
61
M
309/32, 128/80
A61M 1/36 (2006.01) A61M 5/44 (2006.01)
Patent
CA 1255729
Temperature-controlled Electric Device for Heating Transfusion Fluids Abstract of the Disclosure Device for heating transfusion fluids such as blood and drugs in solution prior to their intravenous drop-by-drop introduction to patients, which comprise 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.
532802
Ogawa Genshiro
R. William Wray & Associates
LandOfFree
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