ANALYTE MONITORING SYSTEM HAVING BACK-UP POWER SOURCE FOR USE IN EITHER TRANSPORT OF THE SYSTEM OR PRIMARY POWER LOSS
First Claim
1. An analyte monitoring system, comprising:
- a biosensor capable of sensing an analyte concentration and outputting a signal indicative of the analyte concentration;
first and second power sources, each selectively couplable to said biosensor, wherein said first and second power sources are capable of providing one or more bias signals to said biosensor; and
a selector coupled to said first and second power sources, wherein said selector selectively electrically couples one of said first and second power sources to said biosensor.
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Accused Products
Abstract
An analyte monitoring system includes a biosensor for detecting an analyte concentration in blood. The monitoring system includes first and second power sources, each selectively couplable to the biosensor for providing power to the biosensors. A sensor may be associated with the first power source and senses the output thereof. A selector is coupled to both the first and second power sources and the biosensor, such that it may selectively couple an output or outputs of either the first or second power sources to the biosensor. In operation, the first power source is coupled to the biosensor to thereby bias the sensor. If the sensor indicates that the first power source is not providing power to the biosensor, the selector decouples the first power source from the biosensor and couples the second power source to the biosensor to thereby maintain the biosensor in a biased state.
188 Citations
23 Claims
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1. An analyte monitoring system, comprising:
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a biosensor capable of sensing an analyte concentration and outputting a signal indicative of the analyte concentration; first and second power sources, each selectively couplable to said biosensor, wherein said first and second power sources are capable of providing one or more bias signals to said biosensor; and a selector coupled to said first and second power sources, wherein said selector selectively electrically couples one of said first and second power sources to said biosensor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An analyte monitoring system, comprising:
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a biosensor capable of sensing an analyte concentration and outputting a signal corresponding to the analyte concentration; a potentiostat selectively couplable to said biosensor, wherein said potentiostat is capable of both providing one or more biasing signals to said biosensor and receiving one or more signals from said biosensor; an auxiliary power source capable of providing one or more biasing signals to said biosensor; and a selector coupled to said potentiostat and said auxiliary power source, wherein said selector selectively electrically couples one of said potentiostat and said auxiliary power source to said biosensor. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. A method controlling operation of a biosensor comprising:
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providing a biosensor capable of sensing an analyte concentration and outputting a signal corresponding to the analyte concentration; and selectively coupling either a first or a second power source to the biosensor based on whether one of said power sources is supplying a bias signal to the biosensor, so as to maintain the biosensor in a biased state. - View Dependent Claims (17, 18)
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19. An analyte monitoring system, comprising:
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a electro-chemical biosensor comprising an electrolytic cell, wherein said electro-chemical biosensor is capable of sensing an analyte concentration and outputting a signal corresponding to the analyte concentration; a first power source selectively couplable to said biosensor, wherein said first power source is capable of providing a biasing signal to the electrolytic cell of said biosensor; an auxiliary power source capable of providing a biasing signal to the electrolytic cell of said biosensor; and a selector coupled to said first power source and said auxiliary power source, wherein said selector selectively electrically couples one of said potentiostat and said auxiliary power source to said biosensor. - View Dependent Claims (20, 21, 22)
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23. An analyte monitoring system, comprising:
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a electro-chemical biosensor comprising an electrolytic cell, wherein said electro-chemical biosensor is capable of sensing an analyte concentration and outputting a signal corresponding to the analyte concentration; a first power source selectively couplable to said biosensor, wherein said first power source is capable of providing a biasing signal to the electrolytic cell of said biosensor; an auxiliary power source capable of providing a biasing signal to the electrolytic cell of said biosensor; a sensor capable of determining whether a bias signal is being supplied to said biosensor; and a selector coupled to said first power source and said auxiliary power source, wherein said selector selectively electrically couples one of said potentiostat and said auxiliary power source to said biosensor based on an output of said sensor.
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Specification