Provided are artificial muscle patches, which are adapted to be implanted adjacent a patient's heart, and artificial sphincter cuffs, which are adapted to be implanted around a body lumen, such as the urethra, the anal canal, or the lower esophagus. The devices of the present invention comprise: (a)...http://www.google.se/patents/US6749556?utm_source=gb-gplus-sharePatent US6749556 - Electroactive polymer based artificial sphincters and artificial muscle patches
