Analyte monitoring device and methods of use

摘要

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 adapted for placement on skin and is adapted to receive a portion of an electrochemical sensor. The sensor control unit also includes two or more conductive contacts disposed on the housing and configured for coupling to two or more contact pads on the sensor. A transmitter is disposed in the housing and coupled to the plurality of conductive contacts for transmitting data obtained using the sensor. The display unit has a receiver for receiving data transmitted by the transmitter of the sensor control unit and a display coupled to the receiver for displaying an indication of a level of an analyte. The analyte monitor may also be part of a drug delivery system to alter the level of the analyte based on the data obtained using the sensor.

主权项

1. An analyte monitoring system, comprising:
an analyte sensor for generating sensor signals, the analyte sensor configured to be positioned in fluid contact with a bodily fluid under a skin surface during a sensor lifetime, the sensor lifetime being a period of time between when the analyte sensor is initially positioned in fluid contact with the bodily fluid to when the analyte sensor is removed from continuous contact with the bodily fluid; and sensor electronics positioned on the skin surface and operatively coupled to the analyte sensor, the sensor electronics including:
a voltage source to provide power to the analyte sensor to generate the sensor signals;a memory for storing a factory set calibration data associated with the analyte sensor, the factory set calibration data enabling the generated sensor signals to be processed without using a reference measurement during the sensor lifetime so as to generate calibrated analyte data;an application specific integrated circuit operatively coupled to the voltage source and the memory to process the sensor signals with the factory set calibration data without using a reference measurement during the sensor lifetime so as to generate calibrated analyte data corresponding to real time monitored analyte level during the sensor lifetime; anda data communication unit operatively coupled to the application specific integrated circuit and configured to wirelessly communicate the calibrated analyte data to a remote location using one or more spreading codes such that the one or more spreading codes have a transmission spectrum which is spread by a predetermined factor.