Breath Screening Apparatus for Rapid Viral Detection
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Solution Overview
Problem
Current COVID-19 testing methods, such as RT-qPCR assays, are invasive, prone to false negatives, and require laboratory processing, which is time-consuming and can lead to sample loss or contamination, necessitating a rapid, non-invasive, and efficient testing solution.
Innovation Solution
A point-of-care breath testing apparatus using a sampling card with adsorbent materials to collect and enrich volatile organic compounds (VOCs) from exhaled breath, analyzed by GC-IMS with AI decision-making, capable of differentiating COVID-19 infected individuals from healthy ones within minutes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If RT-qPCR assays are used for COVID-19 testing, then diagnostic accuracy is improved, but testing time and complexity increase
Solution Approach 1:
The invention extracts the essential diagnostic function from complex laboratory RT-qPCR assays by identifying and detecting specific VOC biomarkers in breath that are characteristic of COVID-19 infection. This extraction enables rapid point-of-care testing without requiring full laboratory processing, thereby reducing testing time while maintaining diagnostic accuracy through targeted biomarker detection
Solution Approach 2:
The invention replaces the mechanical and chemical complexity of RT-qPCR laboratory systems with a portable breath analysis device that uses GC-IMS technology. This substitution eliminates the need for complex laboratory equipment, sample processing machinery, and controlled environment requirements, enabling rapid testing in various settings while preserving diagnostic capability
2Measurement precision
If RT-qPCR assays are used for COVID-19 testing, then diagnostic accuracy is improved, but sample loss or contamination risk increases
Solution Approach 1:
The breath sampling system is designed to be self-contained and self-sufficient, with integrated sampling, enrichment, and detection components. The device performs all operations autonomously without requiring external laboratory handling, thereby eliminating risks associated with sample transport, storage, and processing by multiple personnel. The closed system prevents contamination while maintaining diagnostic accuracy
3Measurement precision
If invasive swab sampling is used for RT-qPCR testing, then diagnostic accuracy is improved, but patient comfort and accessibility worsen
Solution Approach 1:
The invention extracts the diagnostic information needed for accurate COVID-19 detection from the invasive swabbing process by targeting VOC biomarkers that are naturally present in exhaled breath. This extraction eliminates the need for invasive nasopharyngeal or oropharyngeal swabbing while preserving diagnostic accuracy through detection of infection-specific breath signatures
Solution Approach 2:
The invention replaces the mechanical action of invasive swabbing with a non-invasive breath collection mechanism. The GC-IMS device simply analyzes volatile compounds in exhaled air without requiring physical contact with mucosal surfaces, thereby improving patient comfort and accessibility while maintaining the ability to detect COVID-19 infection accurately
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 method provides rapid, non-invasive, and accurate COVID-19 detection with reduced risk of sample loss or contamination, utilizing VOCs in exhaled breath to identify specific biomarkers indicative of COVID-19 infection, suitable for mass population screening.
Implementation Method 1
a sampling card with adsorbent materials to collect and enrich volatile organic compounds (VOCs) from exhaled breath
Implementation Method 2
analyzed by GC-IMS
Data Source
AI summary
An apparatus for detecting Covid-19 infection in a subject, the apparatus comprising (a) a sampling apparatus for collecting a breath sample from a subject (b) An analyzer, comprising an ion mobility spectrometer (IMS), for receiving the sample from the sampling apparatus and for determining the presence in the sample of Volatile Organic Compounds (VOCs) indicative of Covid-19, the VOCs comprising at least three compounds selected from the group consisting of C1-C3 alcohols, C2-C8 aldehydes, C3-C4 ketones and C4-C6 alkyl esters.