History of endoscopic devices for the exploration of the small bowel.

The small bowel has gained new attention since the development of the wireless videocapsule in 2000, opening up the last 'black box' of the gastrointestinal tract. Although conventional push enteroscopy has been available for decades, since the wireless videocapsule new enteroscopes have been developed to examine the entire small bowel endoscopically in order to perform all conventional endoscopic procedures. The present review highlights the historic evolution of enteroscopy, from the first complete enteroscopy in 1971 over the current balloon-assisted and over-tube-guided methods of enteroscopy to future directions of evolutions towards perfection.