2. Previous GI surgery that could preclude the ability to place the device. 3. Subjects with a history of abnormal GI anatomical findings documented on imaging study, which in the opinion of the investigator, may impair implantation of the IGB device 4. Subjects with severe GERD that are not responding to Proton Pump Inhibitor (PPI) 5. Known abnormal pathologies or conditions of the upper gastrointestinal tract.