Apparatus for drug administration is provided, including an ingestible capsule, which includes a drug, stored by the capsule, and an environmentally-sensitive mechanism, adapted to change a state thereof responsively to a disposition of the capsule within a gastrointestinal (GI) tract of a subject. The...http://www.google.es/patents/US20050058701?utm_source=gb-gplus-sharePatente US20050058701 - Active drug delivery in the gastrointestinal tract
Active drug delivery in the gastrointestinal tract
