Gastric Sleeve surgery is technically the procedure to remove the large part of the stomach that functions as storage. 

In this method weight reduction occurs due to the installation of a balloon under the control of an endoscope into the stomach and inflation of the balloon with air in the amount of 550-720 cm ³.

Sleeve gastrectomy - this bariatric surgery is usually performed using a laparoscopic, minimally invasive technique. During the operation, the surgeon removes 75 percent of the stomach.