Implantable Biosensor Biofouling Detection and Calibration
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Solution Overview
Problem
Current biosensors face challenges in accurately monitoring biomarkers and maintaining sensitivity due to biofouling, temperature variations, and mechanical stress, which can lead to reduced performance and reliability.
Innovation Solution
A semiconductor biosensor device with an implantable section containing biomarker sensor arrays, a control biomarker sensor array, a biofouling detector, a temperature sensor, and a bending detector, connected to processing circuitry and wireless communication, which calibrates and transmits data to a computing device for continuous monitoring and alerting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If biosensors are used for continuous monitoring, then biomarker detection capability is improved, but biofouling accumulates over time reducing sensitivity
Solution Approach 1:
The patent applies preliminary action by implementing a biofouling detector that proactively monitors the sensor surface condition before significant fouling occurs. The system continuously detects biofouling accumulation and triggers calibration operations or alerts in advance, preventing complete sensor failure and maintaining detection accuracy throughout the monitoring period.
Solution Approach 2:
The patent implements feedback mechanisms where the biofouling detector continuously monitors sensor condition and feeds this information back to the processor. The system automatically adjusts calibration parameters or generates alerts based on the feedback, creating a closed-loop control system that maintains reliable biomarker detection despite ongoing biofouling accumulation.
2Duration of action of moving object
If biosensors operate in the body for extended periods, then continuous monitoring is achieved, but temperature variations and mechanical stress reduce performance
Solution Approach 1:
The patent uses feedback by incorporating temperature sensors and bending detectors that continuously monitor environmental conditions and feed this data back to the processor. The system automatically compensates for temperature variations and mechanical stress effects through calibration adjustments, maintaining reliable performance during extended continuous operation.
Solution Approach 2:
The patent applies parameter changes by dynamically adjusting calibration parameters based on detected temperature variations and mechanical stress levels. The system modifies operational parameters in real-time to compensate for environmental changes, ensuring consistent sensor performance throughout the extended monitoring duration.
3Adaptability or versatility
If multiple sensor arrays are integrated for comprehensive monitoring, then detection capability is improved, but device complexity increases
Solution Approach 1:
The patent implements multi-functionality by integrating multiple sensor arrays (biomarker sensors, temperature sensors, bending detectors, biofouling detectors) into a single unified device. Each sensor type serves multiple purposes: biomarker detection monitors health status, temperature sensing compensates for thermal effects, bending detection monitors mechanical stress, and biofouling detection maintains sensor reliability. This universal approach allows one device to perform comprehensive monitoring while managing complexity through integrated circuit design.
Data Source
AI summary
A biosensor apparatus comprises a biosensor device and a cover that is configured to attach to the biosensor device. The biosensor device includes a surface section that is disposed above the user's skin and an implantable section that is injected into the user's skin. The implantable section includes a bending detector and sensing circuitry. The sensing circuitry includes one or multiples of a biomarker sensor array, a control biomarker sensor array, a temperature sensor, and/or a biofouling detector.