Single balloon enteroscopy technique

(A) With the balloon at the tip of the overtube inflated to anchor the small bowel, the enteroscope is advanced as deeply into the small bowel as possible (except for the initial insertion, when the enteroscope is advanced with the overtube balloon deflated).
(B) Once forward motion is no longer possible, the tip of the enteroscope is agulated to create a "hook" that will help anchor the enteroscope. Once the small bowel is anchored by the tip of the enteroscope, the overtube balloon is deflated.
(C) The overtube is advanced to the end of the enteroscope.
(D) The overtube balloon is inflated to anchor the small bowel.
(E) Both the enteroscope and the overtube are gently withdrawn to pleat the small bowel onto the overtube. The enteroscope is then advanced as in (A), and the process is repeated until forward progress with the enteroscope is no longer possible or the area of interest within the small bowel is reached.