Consumer Guide to Bariatric Surgery now includes information about Endoluminal Sleeve; a type of incision–free weight loss surgery in which a liner is inserted and removed through the mouth. The device lines the upper part of the small intestine. Initial results in clinical trials show the device can help patients to lose weight and reverse diseases related to obesity, such as diabetes. As of Oct 2009, the product was not yet approved for use in the United States.