A sensor is disclosed, for implantation within a blood vessel to monitor an analyte in blood. In one embodiment, the analyte is glucose. A signal indicative of glucose level is transmitted to an external receiver. The signal may also be used to drive an internal or externally worn insulin pump. Methods...http://www.google.de/patents/US20030009093?utm_source=gb-gplus-sharePatent US20030009093 - Implantable sensor
