Medical systems and devices are provided. A medical system includes implantable devices and an external device configured for wirelessly interacting with the implantable devices. The external device may be attachable to a patient and be configured for wirelessly communicating with a first implantable...http://www.google.com.au/patents/US8078278?utm_source=gb-gplus-sharePatent US8078278 - Body attachable unit in wireless communication with implantable devices
