Self-Powered Analyte Sensor
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Abstract
Generally, embodiments of the invention relate to self-powered analyte determining devices (e.g., electrochemical analyte monitoring systems) that include a working electrode, a counter electrode, and an optional resistance value, where the working electrode includes analyte sensing components and the self-powered analyte determining device spontaneously passes a current directly proportional to analyte concentration in the absence of an external power source. Also provided are systems and methods of using the, for example electrochemical, analyte sensors in analyte monitoring.
3 Citations
148 Claims
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1-128. -128. (canceled)
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129. A method for monitoring a level of an analyte, the method comprising:
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positioning an analyte sensor assembly onto skin of a patient; arranging a working electrode within the analyte sensor assembly for electrooxidizing or electroreducing a primary reactant in the presence of an analyte-responsive enzyme; electroreducing or electrooxidizing a secondary reactant on a counter electrode within the analyte sensor assembly; and maintaining a current directly proportional to analyte concentration in the absence of any reference voltage, maintaining the current by using a resistor disposed between the working electrode and counter electrode, wherein the resistor uses an R value chosen from within a range of R values for which the current output is independent of the R value at an analyte concentration at the top of its physically relevant range. - View Dependent Claims (130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148)
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Specification