Systems and methods for replacing signal artifacts in a glucose sensor data stream
First Claim
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1. A method for processing data from a glucose sensor, the method comprising:
- receiving sensor data from a glucose sensor for a time period;
evaluating, using one or more processors, the sensor data to detect signal artifacts, the evaluating comprising performing a first derivative analysis of the sensor data and performing a second derivative analysis of the sensor data;
determining, using the one or more processors, a level of confidence based on the evaluation;
generating insulin administration instructions based on the sensor data;
outputting an indication of the level of confidence; and
administering, using the insulin administration device, insulin to a host based on the insulin administration instructions.
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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 interfering species, ischemia, pH changes, temperatures changes, known or unknown sources of mechanical, electrical and/or biochemical noise, 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 processes some or the entire data stream continually or intermittently based at least in part on whether the signal artifact event has occurred.
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15 Claims
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1. A method for processing data from a glucose sensor, the method comprising:
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receiving sensor data from a glucose sensor for a time period; evaluating, using one or more processors, the sensor data to detect signal artifacts, the evaluating comprising performing a first derivative analysis of the sensor data and performing a second derivative analysis of the sensor data; determining, using the one or more processors, a level of confidence based on the evaluation; generating insulin administration instructions based on the sensor data; outputting an indication of the level of confidence; and administering, using the insulin administration device, insulin to a host based on the insulin administration instructions. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A system for processing data from a glucose sensor, the system comprising:
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a sensor data receiving module configured to receive sensor data from a glucose sensor for a time period; signal artifacts detection module configured to evaluate the sensor data to detect signal artifacts, the evaluating comprising performing a first derivative analysis of the sensor data and performing a second derivative analysis of the sensor data, wherein the signal artifacts detection module determines a level of confidence based on the evaluation; a processor module configured to generate insulin administration instructions based on the sensor data; an output module configured to provide an indication of the level of confidence; and a medicament delivery device configured to administer insulin to a host based on the insulin administration instructions. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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Specification