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. A system, comprising:
an analyte sensor for transcutaneous placement under a skin layer and in fluid contact with an interstitial fluid to monitor an analyte level; a housing for placement on a skin surface, the housing including sensor electronics disposed within the housing and electrically coupled via electrical contacts with the analyte sensor, the sensor electronics including:
a sensor circuit configured to obtain signals from the analyte sensor;a measurement circuit including a current to frequency converter configured to convert the sensor circuit signals obtained by the sensor circuit to a data format for use by digital logic circuits;a processing circuit including an application specific integrated circuit operatively coupled to the measurement circuit to evaluate converted data for transmission, wherein the processing circuit is configured to reduce noise or errors in a data stream from the measurement circuit; and a receiver configured to receive a data transmission from the sensor electronics, wherein when the receiver has not been activated for a predetermined period of time, the receiver is configured to receive the data transmission from the sensor electronics but not to display the data related to analyte concentration.