Method and apparatus to deliver drug and pacing therapy for treatment of cardiac disorders

A system, comprising:

• an implantable drug delivery device including:
• a drug storage device including a polymeric matrix made of an electrically sensitive polymer having a structure that is electrically controllable by applying an electric field on the electrically sensitive polymer, the structure including an electrically controllable porosity or an electrically controllable binding affinity;
• a drug embedded in the polymeric matrix;
• and
• a plurality of electrodes, coupled to the drug storage device, the plurality of electrodes to apply a plurality of electric fields each on a portion of the electrically sensitive polymer and having an individually controllable amplitude;
• and
• an implantable lead including a proximal end including a lead connector providing for a detachable connection to an implantable cardiac rhythm management (CRM) device and a distal end at the implantable drug delivery device, the implantable lead providing for electrical connections between the implantable CRM device and the plurality of electrodes to allow a plurality of drug delivery signals controlling the application of the plurality of electric fields to be delivered from the implantable CRM device to the plurality of electrodes.