SmallEnteroscopyDouble Balloon Endoscopy From new innovations, an electronic endoscopy system exclusively for the small intestine was born. The small intestine is the most difficult organ to access in GI tract endoscopy. Consequently, it is known as “The Dark Continent.” As well as facilitating smooth minimally-invasive investigation of this “Dark Continent,” the FUJINON Double Balloon Endoscopy System makes not only diagnosis but also treatment of the entire small intestine a reality.