INGESTIBLE DEVICE FOR THE RELEASE OF SUBSTANCES AT DISTINCT LOCATIONS IN THE ALIMENTARY CANAL

摘要

An ingestible device has openable reservoir (12) which is sealed by bung (14). A piston (16) operatively connected to an energy source is provided in the reservoir. A releasable latch (18) controls the actuation of piston. An electromagnetic wave receiver consisting of air core and wire coil, operates the latch when it detects radiation in a predetermined characteristics range. Independent claims are also included for the following: (a) electromagnetic radiation transmitting apparatus; (b) ingestible device operating method.