Medical devices for obesity and/or obesity related diseases, namely, devices for intermittently obstructing a gastric opening or gastrointestinal lumen to slow gastric emptying and inducing satiety; medical devices for obesity, obesity related diseases, diabetes, diabetes related diseases and/or for modulating the regulation of hormones, peptides, or proteins, namely, intermittently obstructive devices for the delivery of one or more therapies within the stomach or gastrointestinal tract; and...