Embodiments of a lumenally-active system and method of use and control thereof are disclosed. According to various embodiments, a lumenally-active device is positioned in a body lumen of an organism, where the device may sense a parameter of a fluid in the body lumen and perform an action on the fluid....http://www.google.es/patents/US20070066929?utm_source=gb-gplus-sharePatente US20070066929 - Lumenally-active device
