A medical device for implantation within a patient comprising a lead body including a conductor within the lead body and a transducer supported by the lead body. The conductor is electrically coupled to the transducer by a conductive fluid, paste or gel. The conductive fluid, paste or gel may be contained...http://www.google.com.au/patents/US7684872?utm_source=gb-gplus-sharePatent US7684872 - Contactless interconnect for transducers
