Microfluidic Diagnostic Apparatus for Parallel Nucleic Acid Processing
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Solution Overview
Problem
Current medical diagnostics face bottlenecks due to the need for specialized equipment and centralized facilities, leading to delays and inefficiencies in sample processing and analysis, particularly in extracting and amplifying nucleic acids from biological samples.
Innovation Solution
A diagnostic apparatus comprising modules for simultaneous extraction and amplification of nucleic acids using microfluidic systems with integrated heaters, magnetic separators, and liquid dispensers, enabling parallel processing and detection of multiple samples without the need for centralized facilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If samples are processed using centralized specialized equipment, then measurement precision and reliability are improved, but loss of time and productivity deteriorate due to shipping delays and batch processing
Solution Approach 1:
The diagnostic system is divided into modular components including sample preparation modules, PCR amplification modules, and detection modules that can be distributed across multiple locations. Each module performs a specific function independently, allowing parallel processing of samples at different sites while maintaining diagnostic accuracy through standardized protocols
Solution Approach 2:
Stable nucleic acid storage formulations serve as intermediaries that enable samples to be transported and stored without degradation. These formulations maintain nucleic acid integrity during shipping and storage, allowing samples to be processed at decentralized locations while preserving the precision required for accurate diagnostic analysis
2Measurement precision
If samples are sent to centralized facilities for analysis, then measurement precision is improved, but loss of time worsens due to transportation delays
Solution Approach 1:
The testing system is segmented into portable modular units that can be deployed at point-of-care locations. Sample preparation, amplification, and detection functions are distributed across separate modules that can operate independently, eliminating the need to transport samples to centralized facilities while maintaining testing accuracy through standardized protocols
Solution Approach 2:
The system enables self-contained nucleic acid testing at decentralized locations using portable equipment and stable nucleic acid storage formulations. Local healthcare providers can perform complete diagnostic testing without sending samples externally, significantly reducing transportation time while maintaining measurement precision through validated assay protocols
3Device complexity
If batch processing is used for sample analysis, then device complexity is reduced, but productivity deteriorates due to waiting time for batch completion
Solution Approach 1:
The processing system is divided into independent modular units, each capable of handling complete sample workflows. Multiple modules can operate simultaneously on different samples, transforming the system from batch processing to parallel processing while maintaining manageable complexity through standardized module interfaces and protocols
Solution Approach 2:
The system enables continuous processing of samples through parallel operation of multiple modular units. While one module completes a sample workflow, another module simultaneously processes a different sample, eliminating idle waiting time and maximizing productivity without requiring overly complex centralized control systems
4Measurement precision
If specialized equipment is used for nucleic acid testing, then measurement precision is improved, but device complexity and cost increase
Solution Approach 1:
The specialized testing equipment is divided into separate functional modules (sample preparation, amplification, detection) that can be manufactured using standard techniques and assembled at lower cost. Each module performs a specific function with simplified design requirements, reducing overall system complexity while maintaining detection accuracy through modular integration
Solution Approach 2:
The system incorporates disposable consumable components such as pre-prepared nucleic acid extraction kits, single-use PCR reagent cartridges, and disposable detection substrates. These inexpensive single-use items eliminate the need for complex cleaning and calibration systems, reducing device complexity and cost while ensuring consistent measurement precision through factory-prepared standardized reagents
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
Facilitates rapid and efficient sample preparation and analysis, allowing for on-demand processing of multiple samples at the point of care, reducing delays and increasing throughput while eliminating the need for specialized equipment and centralized facilities.
Implementation Method 1
a magnetic separator configured to move relative to the process chambers of each holder
Implementation Method 2
a heater assembly configured to independently heat each of the process chambers
Data Source
AI summary
The technology described herein generally relates to systems for extracting polynucleotides from multiple samples, particularly from biological samples, and additionally to systems that subsequently amplify and detect the extracted polynucleotides. The technology more particularly relates to microfluidic systems that carry out PCR on multiple samples of nucleotides of interest within microfluidic channels, and detect those nucleotides.