 The esophagus is in close proximity to blood flow from the heart and great vessels, and the Esophageal Cooling Device ECD is designed to take advantage of this heat exchange environment. The ECDs ability to decompress the stomach and avoid distention of the esophagus away from the device ensures good contact with the esophageal mucosa, and thus maximizes heat transfer from the patient. The ECD replaces the standard gastric tube which is placed in the target patient population as a routine standard of care, is made of standard medical-grade silicone, and is generally similar in size and shape to the gastric tubes currently used. Initial mathematical, animal, and human data have shown strong support for the efficacy and safety of the ECD. 