Portable Breath Analysis System for Respiratory Diagnostics
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Solution Overview
Problem
Current gas analytical systems for diagnosing respiratory ailments like asthma, tuberculosis, and lung cancer are large, expensive, and not suitable for point-of-care use, lacking sensitivity and specificity, and are impractical for field applications.
Innovation Solution
A portable gas analysis system using a gas chromatograph fluidly coupled with a detector array, optionally including a preconcentrator, for detecting volatile organic compounds (VOCs) and nitric oxide (NO) in breath samples, enabling rapid, accurate, and sensitive diagnosis and monitoring of these conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If large laboratory instruments such as gas chromatography and mass spectrometry are used for breath analysis, then measurement precision and reliability are improved, but device size and cost increase significantly
Solution Approach 1:
The patent extracts and isolates specific volatile organic compounds (VOCs) from the complex breath sample using selective absorption materials, then analyzes only these extracted compounds. This allows the use of simpler, smaller detection instruments rather than requiring full-scale mass spectrometry, thereby reducing device size while maintaining diagnostic accuracy for specific respiratory conditions.
Solution Approach 2:
The breath analysis system is divided into separate functional modules: sample collection, volatile compound extraction using absorption materials, concentration enhancement, and detection. This segmentation allows each module to be optimized independently and enables the use of smaller, more affordable components that collectively achieve the diagnostic performance previously requiring only large integrated instruments.
2Measurement precision
If sophisticated gas analysis systems are used for TB diagnosis, then sensitivity and specificity are improved, but ease of operation and portability deteriorate
Solution Approach 1:
The system incorporates automated sample processing and electronic data analysis that reduces the need for skilled manual operation. The automated extraction and detection processes, combined with computer-based pattern recognition for diagnostic interpretation, enable the system to perform sophisticated analysis while maintaining ease of operation for users with minimal training.
Solution Approach 2:
The patent introduces computer-based pattern recognition algorithms as an intermediary between the detection hardware and diagnostic interpretation. This software intermediary automatically processes complex sensor data and provides diagnostic results, eliminating the need for users to manually analyze complex breath composition data while maintaining high diagnostic sensitivity and specificity.
3Ease of manufacture
If conventional diagnostic methods are used, then ease of manufacture and cost are reduced, but measurement precision and diagnostic accuracy deteriorate
Solution Approach 1:
The system employs disposable absorbent materials and single-use sampling components that are inexpensive to manufacture and replace. These disposable elements perform the critical function of volatile compound extraction at very low cost, enabling the overall system to be affordable while maintaining the precision required for accurate respiratory disease diagnosis through multiple repeated measurements.
Solution Approach 2:
The patent utilizes changes in physical and chemical parameters of breath samples under controlled conditions to enhance diagnostic specificity. By measuring multiple VOCs at different concentrations and ratios, and comparing these parameter changes against established diagnostic criteria, the system achieves high diagnostic accuracy using affordable sensor technology rather than expensive 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
The system provides high sensitivity and specificity for detecting asthma, tuberculosis, and lung cancer, allowing for early warning of environmental contaminants and effective medication management, while being affordable and suitable for point-of-care use.
Implementation Method 1
a gas chromatograph, wherein the gas chromatograph is fluidly coupled to a detector array
Data Source
AI summary
Methods and systems are disclosed for the detecting of whether a subject has a lung disorder such as asthma, tuberculosis or lung cancer. Monitoring the subject's health and prognosis is also disclosed.