SYSTEMS AND METHODS FOR REPLACING SIGNAL ARTIFACTS IN A GLUCOSE SENSOR DATA STREAM
First Claim
1. A method for processing data from a continuous glucose sensor, the method comprising:
- monitoring a data stream generated by a working electrode of a continuous glucose sensor, the data stream comprising a glucose sensor data point;
monitoring an output of a counter electrode of the continuous glucose sensor;
detecting a signal artifact associated with the glucose sensor data point;
classifying the signal artifact based on the monitoring of the output of the counter electrode;
selectively applying one or more of a plurality of signal estimation algorithms based on the classification to generate an estimated sensor data point; and
replacing the sensor data point with the estimated sensor data point.
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Accused Products
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
20 Claims
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1. A method for processing data from a continuous glucose sensor, the method comprising:
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monitoring a data stream generated by a working electrode of a continuous glucose sensor, the data stream comprising a glucose sensor data point; monitoring an output of a counter electrode of the continuous glucose sensor; detecting a signal artifact associated with the glucose sensor data point; classifying the signal artifact based on the monitoring of the output of the counter electrode; selectively applying one or more of a plurality of signal estimation algorithms based on the classification to generate an estimated sensor data point; and replacing the sensor data point with the estimated sensor data point. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A system for processing data from a continuous glucose sensor, the system comprising:
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a continuous glucose sensor comprising a working electrode configured to generate a data stream and a counter electrode configured to generate a counter electrode output; and an artifact replacement module configured to; monitor the counter electrode output; detect a signal artifact associated with a portion of the data stream; classify the signal artifact based on the monitoring of the counter electrode output; selectively apply one or more of a plurality of signal estimation algorithms based on the classification to generate an estimated data stream portion; and replace the portion of the data stream with the estimated data stream portion. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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Specification