Portable Molecular Diagnostic Device for Point-of-Care Testing
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Solution Overview
Problem
Current molecular diagnostic testing methods are inadequate for point-of-care or in-home use due to complexity, high cost, and safety concerns, often resulting in inaccurate or delayed results, which can lead to misuse and antibiotic resistance issues.
Innovation Solution
A disposable, portable molecular diagnostic test device that includes a detection module with capture probes and reagents producing a visible signal for nucleic acid amplification, allowing for accurate and rapid visual output without the need for specialized equipment or training.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If centralized laboratory molecular diagnostics testing is used, then measurement precision is improved, but device complexity and loss of time increase
Solution Approach 1:
The centralized laboratory testing system is segmented into a portable device that integrates sample processing, nucleic acid amplification, and detection functions into a single handheld unit, eliminating the need for complex centralized instrumentation while maintaining diagnostic accuracy
Solution Approach 2:
The device is designed to be self-contained with all necessary reagents, amplification components, and detection mechanisms integrated into the portable unit, allowing it to perform molecular diagnostics independently without requiring complex laboratory infrastructure or trained personnel
2Measurement precision
If centralized laboratory molecular diagnostics testing is used, then measurement precision is improved, but loss of time increases
Solution Approach 1:
Sample processing, nucleic acid amplification, and detection functions are merged into a single integrated portable device that can complete the entire molecular diagnostic workflow in one location, eliminating batch processing delays and enabling immediate results at the point of care
Solution Approach 2:
The device performs nucleic acid amplification and detection in rapid succession immediately after sample collection, eliminating the delay of transporting samples to centralized laboratories and waiting for batch processing before results are available
3Measurement precision
If sophisticated optics and laser light sources are used, then measurement precision is improved, but object-affected harmful factors increase
Solution Approach 1:
The device uses disposable components and non-hazardous detection methods that do not require sophisticated optics or laser light sources, eliminating safety hazards while maintaining sufficient detection sensitivity for point-of-care use
Solution Approach 2:
Complex optical detection systems with lasers and sophisticated optics are replaced with simpler detection mechanisms that use non-hazardous light sources or alternative detection methods, eliminating safety risks associated with high-powered lasers while maintaining diagnostic capability
4Adaptability or versatility
If flexible laboratory-based systems are used, then adaptability is improved, but device complexity increases
Solution Approach 1:
The portable device is designed with universal functionality to perform multiple molecular diagnostic tests using a single integrated platform, allowing it to adapt to different testing needs without requiring complex reconfiguration or additional specialized equipment
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
Enables rapid, accurate, and safe molecular diagnostic testing at the point of care or in-home settings, reducing the risk of misuse and improving timely treatment decisions.
Implementation Method 1
The second reagent includes a precipitating substrate formulated to catalyze the production of the visible signal by producing an insoluble colored product when the second reagent is in contact with the first reagent
Implementation Method 2
The second reagent includes a precipitating substrate formulated to catalyze the production of the visible signal
Implementation Method 3
The detection module includes a detection surface including a series of capture probes to which a first portion of the target amplicon is bound when the detection solution is conveyed
Data Source
AI summary
A method includes conveying a detection solution containing a target amplicon into a detection module of a molecular diagnostic test device. The detection module includes a detection surface including a series of capture probes to which a first portion of the target amplicon is bound when the detection solution is conveyed. A first reagent formulated to produce a visible signal indicating a presence of the target amplicon is then conveyed into the detection module. The first reagent is bound to a second portion of the target amplicon when the first reagent is conveyed. A second reagent is conveyed into the detection module. The second reagent includes a precipitating substrate formulated to catalyze the production of the visible signal by producing an insoluble colored product when the second reagent is in contact with the first reagent. The method includes viewing the visible signal via a transparent portion of the detection module.