Micro Analyte Sensor Electrode Switching for Longer Service Life
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Solution Overview
Problem
Current micro analyte sensors have a short service life due to enzyme activity limitations, leading to unreliable data and frequent replacements, which is inconvenient and costly for users.
Innovation Solution
A micro analyte sensor with multiple electrode groups, where each group includes a working electrode and an additional electrode, configured to alternate into a working state based on predetermined conditions, such as time or electrode failure, extending the sensor's lifespan and improving reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If a single electrode group is used in the sensor, then the device structure is simple, but the service life is limited to 1-14 days due to enzyme activity decline
Solution Approach 1:
The sensor is divided into multiple electrode groups (first electrode group and second electrode group), each capable of independent operation. This segmentation allows the sensor to extend its service life by switching between electrode groups when enzyme activity declines, resolving the contradiction between extended duration and structural complexity.
2Duration of action of stationary object
If multiple electrode groups are added to extend service life, then the sensor can operate longer, but the device complexity increases
Solution Approach 1:
Multiple electrode groups are designed with identical functional capabilities (working electrode, counter electrode, reference electrode), allowing any electrode group to perform the same detection function. This multi-functionality enables extended operational duration while managing complexity through functional equivalence rather than functional differentiation.
Solution Approach 2:
The sensor is equipped with multiple electrode groups in advance, prepared to take over when enzyme activity declines. This preliminary action ensures continuous operation without interruption, extending the stationary object's operational duration while the complexity is managed through pre-planned redundancy.
3Reliability
If the sensor operates beyond enzyme activity lifetime, then continuous monitoring is maintained, but the analyte data reliability declines
Solution Approach 1:
The sensor incorporates reserve electrode groups that remain inactive until needed, providing a cushion against enzyme activity decline. When the active electrode group's enzyme activity drops, the system switches to the reserve electrode group with fresh enzyme activity, maintaining data reliability while extending the moving object's effective service life.
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
The solution prolongs the service life of the sensor, enhances user experience by reducing the need for frequent replacements, and lowers user costs by maintaining reliable analyte data over an extended period.
Implementation Method 1
The working electrode and the additional electrode are configured so that, when in use, they are triggered in accordance with predetermined conditions and enter the working state alternately
Implementation Method 2
The working electrode, the reference electrode and the counter electrode at least include an electron conduction layer
Data Source
AI summary
A miniature analyte detection device, includes a base and at least two electrode groups. The base includes an internal part and an external part. The at least two electrode groups are located on the surface of the internal part, each electrode group includes at least one working electrode and at least one additional electrode. The external part is provided with a PAD corresponding to each electrode, and the PAD is electrically connected with the working electrode and the additional electrode respectively through a wire. The working electrode and the additional electrode are configured to trigger alternately into the working state according to the predetermined conditions when in use, so as to prolong the service life of the sensor, improve the service reliability and enhance the user experience.