Patent ID: 7715700
Filing Date: 2010-05-11
Classification: A61M

Abstract:
1. An infusion fluid warming apparatus for warming an infusion fluid to a predetermined temperature prior to supply of the infusion fluid into a living body through an infusion fluid tube, said apparatus comprising: a tube holding device detachably holding the infusion fluid tube; and a heat accumulator member generating a latent heat in phase change thereof from liquid phase to solid phase, said heat accumulator member being disposed in said tube holding device, so as to warm the infusion fluid passing through the infusion fluid tube that is held by said tube holding device, by the latent heat generated in the phase change from the liquid phase to the solid phase, wherein the latent-heat-type heat accumulator member is constituted by a heat accumulating material, a trigger member which initiates the phase change of the heat accumulating material from the liquid phase to the solid phase in response to a heat generation initiating operation, and a flexible accommodating bag which fluid-tightly accommodates the heat accumulating material and the trigger member, the flexible accommodating bag has an outer bag constituted by a flexible sheet, and a heat conducting member including a portion held in contact with a warming surface of the flexible sheet that is to be opposed to the infusion fluid and another portion separated from the warming surface of the flexible sheet, and the heat conducting member is provided by a plurality of flexible heat conducting fins each including an end portion connected to the warming surface of the flexible sheet that is to be opposed to the infusion fluid and another end portion separated from the warming surface of the flexible sheet.