Balloon tamponade of bleeding esophageal varices was described as early as the 1930s. A double-balloon tamponade system originally developed by Sengstaken and Blakemore in 1950 has undergone relatively few changes to the current day. The 3 major components of a Sengstaken-Blakemore tube are a gastric balloon, an esophageal balloon, and a gastric suction port. The addition of an esophageal suction port to help prevent aspiration of esophageal contents resulted in what is called the Minnesota tube. Another nasogastric (NG) device with a single gastric balloon is most effective at terminating bleeding from gastric varices and is known as the Linton-Nachlas tube. The advent of endoscopy has reduced the use of balloon tamponade, but the use of such devices can still be temporizing or lifesaving, despite their potential for serious complication]
See the images below.
Sengstaken-Blakemore tube. Image courtesy of Richard Treger, MD. 
Linton-Nachlas tube. Image courtesy of Richard Treger, MD
See the images below.
Sengstaken-Blakemore tube. Image courtesy of Richard Treger, MD. Linton-Nachlas tube. Image courtesy of Richard Treger, MD
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