An apparatus is operable to communicate fluid. An exemplary apparatus comprises a housing and a fluid reservoir within the housing. An actuator is operationally engaged with the fluid reservoir. The actuator is operable to effect communication of fluid from or into the fluid reservoir. A sensor is in...http://www.google.ca/patents/US8066629?utm_source=gb-gplus-sharePatent US8066629 - Apparatus for adjustment and sensing of gastric band pressure
