Adjustable Gastric Banding
This type of procedure is one of the least invasive available. Basically an inflatable band is placed around the stomach to squeeze it into two sections. The upper portion is kept smaller. While the stomach is still connected, there is only a small passage between the two. This causes food to move slowly from the smaller portion of the stomach. People will get full very quickly. Part of the dietary change after this procedure is eating soft food or well-chewed to prevent clogging the small passage.
There are a few different versions of banding such as vertical banded gastroplasty and the popular Lap-Band surgery. In all cases this is one of the simpler and safer procedures because it is less invasive. Recovery times are faster as a result of less tissue being damaged and the procedure can be reversed by removing the band.
However this type of surgery typically shows a less dramatic loss of weight and sometimes the band can become loose or slip.