This describes a high pressure system with banding. It's not good for our esophagus. It was published on a competing website, so left off that portion of the link. I also posted a link to his blog, which this is a part.

articles/choice-of-bariatric-procedure-a-philosophy-obtained-in-20-years-of-bariatric-practice-2/ Dr Michael Roslin

http://nwhsurgicalweightloss.org/blog/choice-of-bariatric-procedure-part-1-a-philosophy-obtained-in-20-years-of-bariatric-practice/

Excerpt:

Most importantly, the band does not impact any of the hunger signals that we have been able to study. I also question its mechanism of action. The band functions to create a high pressure zone just past the esophagus, the tube that transports food from the mouth to stomach. As the pressure is raised, the esophagus has to work harder. Until the pressure reaches a certain point, the patient feels little restriction. Once too high, the pressure has an adverse impact on the muscular esophagus. This results in patients having heartburn or dysphagia when the band is too tight, and then feeling no restriction when loosened. Proponents of banding believe that there is an ideal point, or green zone. My experience has shown that this exists for some people. For others, the band can be frustrating to both patient and provider.