Gastroduodenal balloon tubes and methods for use in localized hypothermia

A gastroduodenal device comprising:

• a balloon catheter comprising a proximal end and a distal end;
• a gastric balloon attached to and located along the hollow balloon catheter between the proximal end and the distal end of the balloon catheter, wherein the gastric balloon further comprises a posterior chamber and an anterior chamber;
• a posterior chamber delivery lumen passing through the balloon catheter and in fluid communication with the posterior chamber, wherein the posterior chamber delivery lumen is configured to deliver gastric balloon cooling fluid to the posterior chamber of the gastric balloon;
• and
• an anterior chamber delivery lumen in fluid communication with the anterior chamber, wherein the anterior chamber delivery lumen is configured to deliver anterior chamber fluid to the anterior chamber of the gastric balloon.

A gastroduodenal device comprising:

• a balloon catheter comprising a proximal end and a distal end;
• a gastric balloon attached to and located along the hollow balloon catheter between the proximal end and the distal end of the balloon catheter;
• a duodenal balloon attached to and located along the balloon catheter between the gastric balloon and the distal end of the balloon catheter, wherein the duodenal balloon is spaced from the gastric balloon along the balloon catheter by a distance that, when the gastric balloon is in the stomach of a patient, is configured to place a first portion of the duodenal balloon in the duodenum of a patient proximal from the ampulla of Vater and a second portion of the duodenal balloon in the duodenum distal from the ampulla of Vater, and wherein the duodenal balloon comprises an intermediate portion proximate the ampulla of Vater that is configured to define a space in the duodenum for the ampulla of Vater, wherein the intermediate portion comprises a constricted size relative to the first portion and the second portion;
• and
• a duodenal balloon lumen passing through the balloon catheter and in fluid communication with the duodenal balloon, wherein the duodenal balloon lumen is configured to deliver duodenal balloon cooling fluid to the duodenal balloon.