SYSTEMS AND METHODS FOR REPLACING SIGNAL ARTIFACTS IN A GLUCOSE SENSOR DATA STREAM
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Abstract
Systems and methods for minimizing or eliminating transient non-glucose related signal noise due to non-glucose rate limiting phenomenon such as ischemia, pH changes, temperatures changes, and the like. The system monitors a data stream from a glucose sensor and detects signal artifacts that have higher amplitude than electronic or diffusion-related system noise. The system replaces some or the entire data stream continually or intermittently including signal estimation methods that particularly address transient signal artifacts. The system is also capable of detecting the severity of the signal artifacts and selectively applying one or more signal estimation algorithm factors responsive to the severity of the signal artifacts, which includes selectively applying distinct sets of parameters to a signal estimation algorithm or selectively applying distinct signal estimation algorithms.
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Citations
50 Claims
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1-20. -20. (canceled)
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21. A method for processing data from a glucose sensor, the method comprising:
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applying a voltage to an electrochemical glucose sensor configured to measure glucose concentration in a host; performing at least one process selected from a group consisting of switching the voltage applied to the glucose sensor, cycling the voltage applied to the glucose sensor, and pulsing the voltage applied to the glucose sensor; measuring a signal response of the glucose sensor to the at least one process; detecting a signal artifact based on the signal response; generating an estimated glucose value based at least in part on the measuring and the detecting; and displaying on a display the estimated glucose value. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
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36. A system for processing data from a glucose sensor, the system comprising:
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an electrochemical glucose sensor configured to measure glucose concentration in a host, wherein a voltage is applied to the glucose sensor; and
wherein the system is configured to;perform at least one process selected from a group consisting of switching the voltage applied to the glucose sensor, cycling the voltage applied to the glucose sensor, and pulsing the voltage applied to the glucose sensor; measure a signal response of the glucose sensor to the at least one process; detect a signal artifact based on the signal response; generate an estimated glucose value based at least in part on the measurement and the detection; and display on a display the estimated glucose value. - View Dependent Claims (37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50)
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Specification