A restrictive device implanted in the upper part of the stomach, selectively divides the stomach into two chambers, effectively reducing the size of the stomach immediately available for the uptake of food. The restrictive device also includes an aperture, limiting the rate at which food can pass from...http://www.google.co.uk/patents/US20040220682?utm_source=gb-gplus-sharePatent US20040220682 - Anti-obesity devices
