Patent ID: 9717862
Date: 2017-08-01
CPC Classifications: A61M,G05D,H05B

Claim:
1. An infusion fluid warmer comprising: a casing shell having an upper wall structure and a lower, opposing, wall structure; said casing shell enclosing: a fluid channel extending through the casing; fluid inlet and outlet ports coupled to opposite ends of the fluid channel to allow a flow of infusion fluid through the casing shell; a housing shell formed in a thermally conducting and electrically insulating material and comprising a plate shaped upper wall structure and an opposing plate shaped lower wall structure; a first heating element bonded to the plate shaped upper wall structure and thermally coupled thereto; a second heating element bonded to the plate shaped lower wall structure and thermally coupled thereto, and an aluminum heat exchanger sandwiched between the plate shaped upper wall structure and the opposing plate shaped lower wall structure and thermally coupled to the plate shaped upper wall structure and plate shaped lower wall structure, wherein a straight portion of the fluid channel possesses a rectangular cross-sectional profile and extends through the aluminum heat exchanger such that heat energy is transferred to the infusion fluid by direct physical contact with aluminum heat exchanger material, wherein the first heating element is bonded to a surface of the plate shaped upper wall structure facing away from the straight portion of the fluid channel and the second heating element is bonded to a surface of the plate shaped lower wall structure facing away from the fluid channel, and wherein at least one surface of the plate shaped upper and lower wall structures facing away from the fluid channel comprises a pair of electrical coupling terminals for receipt of electrical power to the first heating element or the second heating element.