The Society for Metabolic and Bariatric Surgery estimates that 18 million adults in the U.S. qualify for weight-loss surgery, but only about 1 percent actually do it. The length of recovery and cost concerns are the main reasons more people don't have such procedures.
Endoscopic Sleeve Gastroplasty is a non-surgical weight loss procedure that is commonly referred to as ESG and also known as the incisionless gastric sleeve or the accordion procedure.
Instead of incisions, stapling and removing parts of the stomach, a tiny camera and tools go down a patient's throat with a needle and thread. Specialized tools mark out guidelines in the stomach, sutures are placed in triangular patterns and the area is cinched together.
Stomach size is reduced by 70 to 80 percent.
ESG works by reducing the space inside your stomach and by slowing down the rate at which food empties from your stomach. Unlike the band, sleeve, and bypass, however, which are surgical procedures, the ESG procedure is non-surgical. Access to the stomach is gained not through incisions in the abdomen but endoscopically, i.e. through the mouth. Like the surgical procedures, the ESG is performed under general anesthesia, and it takes about 1 hour to complete.
A device called the 'Overstitch' is inserted into the stomach and reduces the stomach capacity from the inside by stitching the stomach together with a series of approximately 6 stitches.
https://www.healthierweight.co.uk/non-surgical-gastric-sleeve/esg-or-gastric-sleeve/
https://www.mooremetabolics.com/weight-loss/endoscopic-sleeve-gastroplasty/
http://bmiclinic.com.au/endoscopic-sleeve-gastroplasty/