Over time a small percentage of gastric bypass patients will start regaining some of their weight. One reason for the weight gain is that the connection between the stomach pouch and small intestines which starts out very small may start to dilate over time. The patients lose the sense of satiety because the stomach pouch can now empty faster.
Also over time the gastric pouch can stretch and accommodate more food when eating. This procedure involves no incisions and no recovery and involves placing an endoscope through the mouth into the stomach pouch and suturing the connection between the stomach pouch and small intestines resulting in slower emptying of the stomach and earlier satiety and more weight loss. The procedure also shrinks the stomach pouch and makes it small (similar to the original gastric bypass procedure).
The procedure can also be used to close a gastric-gastric fistula if necessary. Doctors are on the forefront of this new technology and looking at ways to apply this technology to maybe one day perform a bariatric surgical procedure completely endoscopically with no incisions at all.