Handheld PCR Device Integrating Amplification and Detection Modules
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Solution Overview
Problem
Current molecular diagnostic testing methods are expensive, require trained personnel and specialized infrastructure, and are often limited to centralized laboratories, leading to delayed and inaccurate diagnostic results, especially for point-of-care testing.
Innovation Solution
A handheld, disposable molecular diagnostic test device that integrates an amplification module for PCR and a detection module, capable of performing tests outside of a laboratory setting, using a self-contained, battery-powered system with on-board reagents and automated processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If laboratory-based molecular diagnostics testing is used, then measurement precision is improved, but device complexity and cost increase
Solution Approach 1:
The device divides the molecular diagnostic testing process into separate functional modules: a sample preparation module, a thermal cycling module for PCR amplification, and a detection module. This segmentation allows each module to be optimized independently and enables the entire system to be miniaturized for point-of-care use while maintaining laboratory-level accuracy.
Solution Approach 2:
The patent combines multiple functions that traditionally require separate laboratory instruments into a single integrated handheld device. The thermal cycling module, detection module, and sample preparation module are merged into one unit, eliminating the need for separate equipment and reducing overall system complexity while maintaining high diagnostic precision.
2Measurement precision
If centralized laboratory testing is used, then measurement precision is improved, but loss of time increases
Solution Approach 1:
The invention extracts the essential functions of molecular diagnostics from centralized laboratories and brings them to the point-of-care setting. By removing the need for complex infrastructure and trained personnel, the device enables accurate testing to be performed locally, eliminating the time loss associated with sample transport and centralized processing.
Solution Approach 2:
The device includes pre-loaded reagents and consumables that are prepared in advance, allowing the testing process to begin immediately upon sample insertion. This preliminary preparation eliminates the need for on-site reagent preparation and accelerates the turn-around time while maintaining diagnostic accuracy.
3Productivity
If high throughput laboratory equipment is used, then productivity is improved, but device complexity and cost increase
Solution Approach 1:
The device employs dynamic thermal cycling with programmable temperature control that adapts to different testing requirements. The thermal cycling module can adjust heating rates, hold times, and cooling profiles to optimize performance for various pathogens and sample types, maintaining high productivity across different testing scenarios without increasing hardware complexity.
Solution Approach 2:
The system utilizes parameter changes in the thermal cycling process to achieve high throughput. By optimizing cycle times, temperatures, and reagent concentrations, the device can process multiple samples rapidly while maintaining accuracy. The detection module also employs parameter optimization in signal thresholding and analysis to quickly identify results without complex processing.
4Measurement precision
If trained personnel are required for testing, then measurement precision is improved, but ease of operation worsens
Solution Approach 1:
The device is designed to perform self-diagnosis and self-processing. The automated thermal cycling module executes PCR protocols without human intervention, and the detection module automatically analyzes results. The system includes built-in quality controls and negative controls that self-validate, eliminating the need for trained personnel while maintaining laboratory-level precision through automated execution of standardized protocols.
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 affordable molecular diagnostic testing at the point of care, reducing the need for centralized laboratories and minimizing delays in diagnosis and treatment.
Implementation Method 1
The amplification module includes a heater such that the amplification module can perform a polymerase chain reaction (PCR) on the input sample
Implementation Method 2
The detection module is configured to receive an output from the amplification module and a reagent formulated to produce a signal that indicates a presence of a target amplicon within the input sample
Data Source
AI summary
A hand-held molecular diagnostic test device includes a housing, an amplification (or PCR) module, and a detection module. The amplification module is configured to receive an input sample, and defines a reaction volume. The amplification module includes a heater such that the amplification module can perform a polymerase chain reaction (PCR) on the input sample. The detection module is configured to receive an output from the amplification module and a reagent formulated to produce a signal that indicates a presence of a target amplicon within the input sample. The amplification module and the detection module are integrated within the housing.