Decentralized Testing Platform Using Container Coupling Units
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Solution Overview
Problem
Current diagnostic testing methods for pathogens like SARS-CoV-2 are inadequate for rapid, accurate, and cost-effective use in non-laboratory settings, particularly during pandemics, with existing tests being either inaccurate or prohibitively expensive, and lacking in accessibility for decentralized testing.
Innovation Solution
The development of container coupling units (CCUs) that integrate heating and reading functions into a single system, allowing for reusable heater/reader systems and cost-effective, efficient processing of multiple reaction containers, enabling asynchronous testing and reducing operator labor and costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If PCR testing is used for accurate pathogen detection, then diagnostic accuracy is improved, but device cost and operational complexity increase
Solution Approach 1:
The system divides the testing workflow into separate functional modules: sample collection containers, reaction vessels for nucleic acid amplification, and a centralized heating/reading instrument. This segmentation allows simple, low-cost consumables to be used at the point of need while concentrating the complex instrumentation in a shared resource, resolving the contradiction between diagnostic accuracy and device complexity.
Solution Approach 2:
The heating and reading functions are combined into a single multi-functional instrument that can process multiple reaction vessels simultaneously. This universal device serves both the thermal cycling required for PCR amplification and the optical detection of results, reducing overall system complexity while maintaining high diagnostic accuracy through standardized protocols.
2Measurement precision
If centralized lab processing is used for molecular testing, then test accuracy is improved, but accessibility and turnaround time worsen
Solution Approach 1:
The system separates sample collection and preparation (which can occur locally at schools, businesses, or home) from the actual molecular analysis (which uses a standardized heating/reading instrument). This segmentation enables decentralized testing while maintaining centralized quality control, improving accessibility without sacrificing test accuracy.
Solution Approach 2:
The reaction vessel acts as an intermediary that bridges the gap between simple field collection and complex laboratory analysis. The vessel is designed to be compatible with both field conditions and the standardized heating/reading instrument, allowing accurate molecular testing to be performed in decentralized settings while maintaining quality standards.
3Device complexity
If isothermal amplification tests are used for decentralized testing, then device complexity is reduced, but test cost increases
Solution Approach 1:
The heating/reading instrument is designed as a universal platform that can accommodate multiple types of amplification reactions (PCR, isothermal, LAMP) using different reaction vessels. This universality allows the system to leverage simpler isothermal chemistries when appropriate, reducing device complexity requirements while maintaining cost-effectiveness through standardized instrument utilization.
Solution Approach 2:
The system allows flexibility in choosing amplification parameters (temperature profiles, reaction times, chemistries) depending on the specific testing scenario. By able to switch between thermal cycling and isothermal approaches, the system optimizes the balance between device complexity and test cost based on the specific application needs.
4Device complexity
If serial processing is used for single heater/reader systems, then device complexity is reduced, but productivity decreases
Solution Approach 1:
The system divides the processing capacity into multiple independent reaction vessels that can be processed in sequence or parallel. Each vessel is a self-contained unit that can be prepared independently and then processed through the single heater/reader instrument, allowing simple serial processing architecture to achieve high throughput through multiplexing.
Solution Approach 2:
The system enables continuous processing by allowing preparation of multiple reaction vessels to occur in parallel while one is being analyzed. As soon as one vessel completes its heating and reading cycle, the next prepared vessel can be immediately processed, eliminating idle time and maintaining continuous productive action despite the serial nature of the single instrument.
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
This solution facilitates rapid, accurate, and cost-effective molecular testing in decentralized settings, improving test throughput and reducing turnaround times while making testing more accessible and efficient for public health management.
Implementation Method 1
a heating unit configured to heat the reaction container
Implementation Method 2
a reading unit configured to read a result of the test
Data Source
AI summary
Systems, methods, and apparatus for sample testing, including biochemical testing for pathogens, biomarkers, or nucleic acids, are provided. These systems, methods, and apparatus may permit asynchronous testing of two or more samples. The apparatus may include a test reaction cap configured to permit sample testing, including instances in which the test reaction cap is coupled to a sample container. The systems, methods, and apparatus may permit testing of a fluid in a sample container using a heating unit with optical detection of sample test results.