An initial version of the Esophageal Cooling Device was approved by the FDA in June 2015, with a newer version allowed it to be connected to more types of equipment.
http://www.upi.com/Health_News/2016/02/02/Esophageal-cooling-device-helps-doctors-control-body-temperature/3211454422489/
Esophageal cooling device helps doctors control body temperature