A resonator device including an induction coil, a conductive member positioned adjacent the induction coil, and a dielectric layer between at least a portion of the induction coil and the conductive member to form a capacitor structure. In one embodiment, the conductive member can be a stent. In an alternative...http://www.google.com.au/patents/US7812290?utm_source=gb-gplus-sharePatent US7812290 - Resonator for medical device