The disclosure describes an optical fiber pressure sensor to measure sphincter pressure which may be incorporated into a therapeutic sphincter control system. The system senses sphincter pressure and sends the information to a stimulator that is capable of stimulation therapy to control sphincter contractility,...http://www.google.com/patents/US20060247724?utm_source=gb-gplus-sharePatent US20060247724 - Implantable optical pressure sensor for sensing urinary sphincter pressure