Analyte Monitoring Device and Methods of Use
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Abstract
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.
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Citations
22 Claims
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1. (canceled)
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2. A method for calibrating an analyte sensor, the method comprising:
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receiving sensor data from an analyte sensor, the sensor data comprising at least one sensor data point; receiving reference data from a reference analyte monitor, the reference data comprising at least one reference analyte value; matching at least one sensor data point with at least one reference analyte value to form a matched data pair; converting sensor data into at least one estimated analyte value, utilizing the matched data pair; and displaying the estimated analyte value within about 10 minutes of receiving the reference analyte value. - View Dependent Claims (3, 4)
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5. A method for calibrating glucose sensor data from a continuous glucose sensor, the method comprising:
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obtaining a reference glucose value; and matching the reference glucose value with a sensor glucose value without compensating for a time lag between the reference glucose value and the sensor glucose value such that a time stamp for the reference glucose value is as close as possible to a time stamp of the sensor glucose value. - View Dependent Claims (6, 7)
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8. A method for calibrating glucose sensor data from a continuous glucose sensor, the method comprising:
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calibrating a continuous glucose sensor by matching a reference glucose value with a first sensor glucose value; and subsequently calibrating the continuous glucose sensor by matching the reference glucose value with a second sensor glucose value.
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9. A method for calibrating glucose sensor data from a continuous glucose sensor, the method comprising:
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immediately calibrating a continuous glucose sensor by matching a reference glucose value with a first sensor glucose value; and subsequently calibrating the continuous glucose sensor by matching the reference glucose value with a second sensor glucose value. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A system for calibrating an analyte sensor, the system comprising:
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a sensor data module configured to receive sensor data from an analyte sensor, the sensor data comprising at least one sensor data point; a reference input module, configured to receive reference data from a reference analyte monitor, the reference data comprising at least one reference analyte value; a processor module configured to match at least one sensor data point with at least one reference analyte value to form a matched data pair, wherein the processor module is further configured to convert sensor data into at least one estimated analyte value utilizing the matched data pair; and an output module configured to display the estimated analyte value within about 10 minutes of receiving the reference analyte value.
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21. A system for calibrating glucose sensor data from a continuous glucose sensor, the system comprising:
a processor module configured to obtain a reference glucose value and match the reference glucose value with a sensor glucose value without compensating for a time lag such that a time stamp of the reference glucose value is as close as possible to a time stamp of the sensor glucose value.
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22. A system for calibrating glucose sensor data from a continuous glucose sensor, the system comprising:
a processor module configured to immediately calibrate a continuous glucose sensor by matching a reference glucose value with a first sensor glucose value and subsequently calibrating the continuous glucose sensor by matching the reference glucose value with a second sensor glucose value.
Specification