A laparoscopic ajustable gastric band is a restrictive device implanted via bariatric surgery and designed for obese patients with a body mass index (BMI) of 40 or greater—or between 35–40 in cases of patients with certain comorbidities that are known to improve with weight loss, such as sleep apnea, diabetes, osteoarthritis, or metabolic syndrome, among others. The gastric band is an inflatable silicone prosthetic device that is placed around the top portion of the stomach, usually via laparoscopic surgery.