Endoscopic therapies of gastroesophageal reflux disease

Figure 2 A: Drawing of the suturing device which is equipped with a vacuum chamber and a hollow needle in which there is a suture attached to a tag; B: Tissue is drawn into the chamber by suction. The needle passes through the tissue and the tag is captured in the distal chamber; C: The suction is then released; D: The procedure is repeated on an adjacent piece of tissue; E: On tightening the knot, the pieces of tissues are approximated; F: The knot, tied outside the animal, is advanced by a knot pusher which is attached to the tip of the endoscope.