Gastric banding is a type of weight loss surgery that involves placing an inflatable silicone band around the upper part of the stomach to decrease stomach size and reduce food intake.
The band is attached to a tube which is accessible through a port under the skin of the abdomen. Using this port, saline solution can be injected into the band to inflate it and likewise, deflate it if necessary.
Adjustments can alter the degree of constriction around the stomach. This affects the rate at which food passes from the pouch into the lower part of your stomach.