An analyte monitor includes a sensor, a sensor control unit, and a display unit. The sensor has, for example, a substrate, a recessed channel formed in the substrate, and conductive material disposed in the recessed channel to form a working electrode. The sensor control unit typically has a housing...http://www.google.es/patents/US20090192372?utm_source=gb-gplus-sharePatente US20090192372 - Analyte Monitoring Device and Methods of Use