A - Human Necessities – 62 – B
Patent
A - Human Necessities
62
B
257/21, 128/71,
A62B 7/00 (2006.01) A61M 16/00 (2006.01) A61M 16/10 (2006.01) A62B 7/10 (2006.01)
Patent
CA 1319678
ABSTRACT OF THE DISCLOSURE A heat exchanger, particularly useful as an inhalation rewarming apparatus for the treatment of hypothermia is provided herein. It includes an insulated container having one or more air inlets leading from lateral faces thereof to longitudinal inlet passages, then to transverse connecting passageways from the inlet passageways, and finally via a longitudinal hollow outlet conduit in the core thereof to an air outlet. A thermochemical heat source is disposed within the core of the container, such thermochemical heat source delineating two boundaries of the hollow conduit and one boundary of each of the inlet passageways. A wrapping of a wettable, absorbent material encases the thermochemical heat source, such wrapping providing the actual above described boundaries. A loose filling or an air-permeable porous material having a large surface area and high heat capacity and high heat conductivity is disposed in the above-described passageways and outlet conduit. In this way, air passing from the air inlet follows along a path through the above-described passageways and outlet conduit in heat- and vapour-transfer contact with the loose filling and the wrapping, so that air emerging from the air outlet is both heated and humidified.
599855
Douwens Robert J.
Hayward John S.
Douwens Robert J.
Hayward John S.
Marcus & Associates
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