Dual Electrode Continuous Glucose Sensor Calibration

The patent introduces an intermediary substance (glucose oxidase enzyme) that mediates the measurement process. The enzyme is immobilized on the electrode surface and catalyzes the oxidation of glucose, producing a measurable signal. This enzymatic mediation stabilizes the measurement process and reduces sensitivity drift over time, eliminating the need for frequent recalibration while maintaining measurement accuracy.

The sensor system performs self-calibration through the use of internal reference mechanisms and stable enzymatic reactions. The glucose oxidase enzyme provides a consistent, reproducible response that serves as an internal reference, allowing the system to self-correct for drift without requiring external calibration interventions, thereby reducing the time loss associated with recalibration.

The sensor incorporates self-calibrating features through the use of stable enzymatic reactions and internal reference mechanisms. The glucose oxidase enzyme provides a consistent response that serves as an internal standard, enabling the system to automatically compensate for drift without requiring complex external calibration procedures or multiple reference measurements, thereby reducing both device complexity and user burden.

The patent employs parameter changes in the enzymatic reaction conditions and electrode design to stabilize the sensor response over time. By optimizing the enzyme immobilization methodology and reaction parameters, the system achieves long-term stability that reduces the frequency and complexity of recalibration requirements, simplifying the overall system while maintaining accuracy.

The sensor system performs self-calibration using internal reference mechanisms and stable enzymatic responses, eliminating the need for users to perform multiple manual blood glucose measurements for calibration. The glucose oxidase enzyme provides a consistent internal standard that automatically compensates for drift, making the sensor self-sufficient and greatly improving ease of operation while maintaining calibration accuracy.

The glucose oxidase enzyme serves as an intermediary that provides a stable, reproducible signal that can be used for automatic calibration. This enzymatic mediator creates a consistent reference response that the system can use for self-calibration, eliminating the need for multiple user-performed reference measurements and thereby improving convenience while maintaining accuracy.

The patent applies local quality by immobilizing glucose oxidase enzyme specifically on the electrode surface where glucose detection occurs. This localized enzymatic activity provides high sensitivity to glucose while the enzyme's specificity inherently rejects other species. The enzyme is confined to the immediate vicinity of the electrode, creating a localized sensing zone with high glucose selectivity and sensitivity while minimizing interference from other substances in the sample.

The patent employs parameter changes in the enzymatic reaction conditions, including optimizing pH, temperature, and enzyme concentration, to enhance glucose sensitivity while maintaining selectivity. By carefully controlling these parameters, the system achieves high detection sensitivity for glucose while the enzymatic mechanism inherently provides selectivity against interfering species, resolving the contradiction between sensitivity and interference resistance.