Glucose Sensor Stabilization via Anodic-Cathodic Voltage Cycling
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Solution Overview
Problem
Current continuous glucose measurement systems require a significant stabilization time before providing accurate readings, often taking several hours, and patients must manually ensure electrodes are hydrated, which is inconvenient and places responsibility on the user.
Innovation Solution
A method involving alternating voltage applications, specifically an anodic and cathodic cycle using different voltage levels and waveforms, to reduce stabilization time and ensure electrode hydration, allowing for faster and more reliable glucose monitoring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If traditional continuous glucose sensors are used, then glucose monitoring is provided, but stabilization time of several hours is required before accurate readings
Solution Approach 1:
The patent applies preliminary hydration action to the sensor electrodes before glucose measurement begins. The sensor includes a hydration medium that pre-hydrates the electrodes during manufacturing or storage, eliminating the need for several hours of stabilization time after insertion. This preliminary action ensures the electrodes are ready for immediate accurate measurement.
Solution Approach 2:
The patent changes the physical-chemical parameters of the sensor by introducing a hydration medium with specific properties (osmolarity, pH, ionic composition) that match physiological conditions. This parameter optimization allows the sensor to achieve stable, accurate readings much faster than traditional sensors.
2Reliability
If manual hydration monitoring is required, then electrode hydration can be ensured, but user convenience is reduced and patient responsibility increases
Solution Approach 1:
The sensor performs self-hydration through an integrated hydration medium that automatically conditions the electrodes without user intervention. The sensor also includes self-diagnostic capabilities to monitor its own hydration status and provide feedback to the user, eliminating the need for manual hydration management.
Solution Approach 2:
The patent incorporates feedback mechanisms where the sensor monitors its own operational parameters and hydration status, then communicates this information to the user or external systems. This automatic feedback loop ensures proper hydration maintenance without requiring continuous user attention or manual checks.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach significantly reduces the stabilization time of glucose sensors to approximately 15 minutes, improves glucose response accuracy, and automates the hydration detection process, enhancing user convenience and sensor reliability.
Implementation Method 1
A method is disclosed for stabilizing a sensor by applying a first voltage for a first time to initiate an anodic cycle in the sensor, by applying a second voltage for a second time to initiate a cathodic cycle in the sensor, and repeating the application of the first voltage and the second voltage to continue the anodic-cathodic cycle in the sensor.
Data Source
AI summary
A blood glucose sensing system includes a sensor and a sensor electronics device. The sensor includes a plurality of electrodes. The sensor electronics device includes stabilization circuitry. The stabilization circuitry causes a first voltage to be applied to one of the electrodes for a first timeframe and causes a second voltage to be applied to one of the electrodes for a second timeframe. The stabilization circuitry repeats the application of the first voltage and the second voltage to continue the anodic—cathodic cycle. The sensor electronics device may include a power supply, a regulator, and a voltage application device, where the voltage application device receives a regulated voltage from the regulator, applies a first voltage to an electrode for the first timeframe, and applies a second voltage to an electrode for the second timeframe.