Glucose Sensor Sensitivity Calibration for Medical Telemetry
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Solution Overview
Problem
Existing analyte monitoring systems face challenges in accommodating a wide range of analyte sensor sensitivities, which can affect data processing and accuracy in medical telemetry systems.
Innovation Solution
A method and apparatus for sampling a predetermined number of in vivo analyte sensors, determining their sensitivity values, and calculating a mean sensitivity to ensure consistent data processing and control in medical telemetry systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a wide range of analyte sensor sensitivities is accommodated, then flexibility in sensor manufacturing and design is improved, but data processing accuracy deteriorates
Solution Approach 1:
The system dynamically adjusts processing parameters based on the specific sensitivity characteristics of each sensor. By measuring the actual sensitivity of individual sensors and adapting the data processing algorithm accordingly, the system maintains high accuracy across sensors with varying sensitivities, thus resolving the contradiction between accommodating wide sensitivity ranges and maintaining data processing accuracy
2Measurement precision
If individual sensor sensitivity calibration is performed, then data processing accuracy is improved, but system complexity increases
Solution Approach 1:
The system performs automatic self-calibration by measuring the sensitivity of each sensor during initialization and using this information to adjust processing parameters. This automated approach eliminates the need for manual calibration procedures while maintaining high accuracy, thereby reducing system complexity despite the added calibration functionality
Data Source
AI summary
Techniques for data processing and control for a glucose monitoring system are provided, including obtaining a first sensitivity of a glucose sensor; obtaining a second sensitivity of the glucose sensor; comparing a difference between the first sensitivity and the second sensitivity to a predetermined range of values; if the difference is outside the predetermined range of the values, causing a calibration routine for the glucose sensor to be performed; and if the difference is within the predetermined range of values determining a composite sensitivity for a current calibration of the glucose sensor based on the first sensitivity and the second sensitivity and calculating the glucose level based on the current calibration of the glucose sensor.