A drug delivery system uses an electrically sensitive polymer to store a drug and applies an electric field onto the electrically sensitive polymer for quantitatively and temporally controlled drug delivery. In one embodiment, the drug delivery system is part of a cardiac rhythm management (CRM) system...http://www.google.co.uk/patents/US20060047318?utm_source=gb-gplus-sharePatent US20060047318 - Method and apparatus to deliver drug and pacing therapy for treatment of cardiac disorders
