Systems, devices and methods are provided for providing sensing and therapy functions using a chronically-implanted device. According to one embodiment, the device includes a structure adapted to be chronically placed within a biosystem, and further includes sensing circuitry and therapy-providing circuitry...http://www.google.co.uk/patents/US20030158584?utm_source=gb-gplus-sharePatent US20030158584 - Chronically-implanted device for sensing and therapy
