Patent ID: 6035102
Filing Date: 2000-03-07
Classification: A61M

Abstract:
A system for warming blood or other liquids to body temperature for infusion into a patient, said system comprising:A) a blood warmer apparatus having a closed elongated annular cylindrical condensation heating chamber with an outer cylindrical heat exchanging wall and an inner spaced apart tubular heat exchanging wall, a cylindrical heat retaining shell closely spaced from and surrounding said heating chamber, and a flat flexible heat exchanging liquid warming envelope held clamped between the outer wall of said heating chamber and surrounding shell,B) a tubular air heating unit housed within the inner tubular wall of the heating chamber including:1) a cool air inlet at one end of said unit,2) a plurality of heat transfer fins extending longitudinally and radially inward from the inner tubular wall of the heating chamber,3) a fan for conducting air from said inlet past said fins, and4) a warmed air outlet from said housing,C) an external outer elongated air hose connected at one end to said warmed air outlet and extending to the patient, said air hose adapted to receive an inner elongated liquid flow line therein.