Analyte Monitoring Device and Methods of Use
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Accused Products
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.
98 Citations
33 Claims
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1. (canceled)
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2. A device for monitoring glucose concentration in a biological sample of a host, the device comprising:
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a substantially continuous glucose sensor that produces a data stream indicative of a glucose concentration in a host, the data stream comprising a plurality of time spaced sensor data points; an integrated receiver that receives the data stream from the substantially continuous glucose sensor, wherein the integrated receiver comprises; an in vitro single point glucose monitor configured to receive a biological sample from the host and to measure the concentration of glucose in the sample; a processor; and a computer readable memory comprising; instructions configured to cause the processor to calibrate the data stream received from the continuous glucose sensor; instructions configured to cause the processor to determine a rate of change of the calibrated data stream from the substantially continuous analyte sensor; and instructions configured to cause the processor to not re-calibrate and/or update calibration of the data stream using a glucose concentration measured by the single point glucose monitor when the rate of change of the calibrated data stream is determined to be aberrant, wherein the rate of change of the calibrated data stream is determined to be aberrant when the rate of change of the calibrated data stream is greater than +/−
0.5 mg/dL/min. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A device for monitoring glucose concentration in a biological sample of a host, the device comprising:
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a substantially continuous glucose sensor that produces a data stream indicative of a glucose concentration in a host, the data stream comprising a plurality of time spaced sensor data points; a receiver that receives the data stream from the substantially continuous glucose sensor, wherein the receiver comprises; a single point glucose monitor configured to receive a biological sample from the host and to measure the concentration of glucose in the sample; a processor; and a computer readable memory comprising; instructions configured to cause the processor to calibrate the data stream received from the continuous glucose sensor; instructions configured to cause the processor to determine a rate of change of the calibrated data stream from the substantially continuous analyte sensor; and instructions configured to cause the processor to not re-calibrate and/or update calibration of the data stream when the rate of change of the calibrated data stream is determined to be aberrant, wherein the rate of change of the calibrated data stream is determined to be aberrant when the rate of change of the calibrated data stream is greater than +/- 0.5 mg/dL/min. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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Specification