Abstract: Example heat exchange pads are described herein. A heat exchange pad can include an input compartment, an output compartment arranged in fluid connection with the input compartment, and an internal member disposed between the input and output compartments. The internal member can include an array of holes formed therein. Additionally, the internal member can be configured to produce impinging flow convection heat transfer in proximity to a heat exchange surface of the output compartment.

Abstract: The present disclosure provides methods to improve the performance of heat exchangers used in thermoelectric cooling/heating devices, wherein improved heat conduction between heat exchanger and thermal exchange fluid is accomplished. Additionally, a method is disclosed to minimize the necessary delay used to protect the thermoelectric modules against thermal shock when switching from heat to cold, or vice versa. Thermal shock can damage thermoelectric modules when the direction of current passing through the modules is instantly switched.

Abstract: An anatomically designed egg-shaped or elliptical-shaped nasopharyngeal airway for providing a comfortable and safe air passage through a nose to a nasopharynx includes a cannula having a proximal open end, a distal end, and a sidewall surrounding a lumen of the cannula. The nasopharyngeal airway has a port, which includes two or more openings separated by one or more bridges, in the sidewall, at a distal portion of the cannula. Upper and lower conduits may be located in channels of the sidewall of the cannula for delivery of oxygen and measurement of CO2 or other purposes.