A variety of passive intragastric
implant devices for
obesity treatment are disclosed. Such passive implants do not autonomously change shape, but instead react within the
stomach to induce satiety. The implants may take up volume within the
stomach, thus reducing the digestive capacity. Additionally, the implants may contact areas within the
stomach, such as the cardia surrounding the
esophageal sphincter, to stimulate satiety-inducing nerves. Also, a number of implants slow
gastric emptying by blocking or otherwise impeding flow through the
pyloric sphincter. Other implants
delay digestion by providing a duodenal sleeve. A number of implants combine two or more of these satiety-inducing features. Methods of
implant are disclosed including compressing the implants within a delivery tube and transorally advancing the implants through the
esophagus to be deployed within the stomach. Removal of the implants occurs in the reverse.