Portable Breath Sampling Device with Aerosol Membrane
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for detecting illicit drugs and biomarkers in exhaled breath are invasive, time-consuming, and prone to contamination, with existing technologies requiring blood or urine samples and being inefficient for non-volatile compound collection.
Innovation Solution
A portable handheld device with a sampling membrane and tubular element that collects aerosols from exhaled breath, allowing for non-invasive, on-site sampling and analysis of drug substances and biomarkers using mass-spectroscopy or SERS, with a volume measure unit to ensure a predefined breath volume is collected.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If blood or urine sampling is used for drug detection, then detection accuracy is improved, but invasiveness and time consumption increase
Solution Approach 1:
The invention extracts and analyzes drug substances directly from exhaled breath aerosols, eliminating the need for invasive blood or urine sampling. The sampling device collects aerosol particles containing drug substances from the subject's breath, and these particles are then analyzed to detect drug presence, providing a non-invasive alternative that maintains detection accuracy.
Solution Approach 2:
The invention uses exhaled breath aerosols as an intermediary medium to detect drug substances. Instead of directly sampling blood or urine, the system captures drug-containing aerosol particles from breath, which serve as a non-invasive proxy that correlates with systemic drug presence, thereby reducing invasiveness while preserving detection capability.
2Measurement precision
If blood or urine sampling is used for drug detection, then detection accuracy is improved, but time consumption increases
Solution Approach 1:
The invention segments the sampling process into a simple breath collection phase followed by rapid aerosol analysis. By separating the collection step (exhaling into the device) from the analysis step (laboratory or portable analyzer), the system eliminates time-consuming procedures like venipuncture, sample labeling, and transport to laboratories, thereby reducing overall time consumption while maintaining detection accuracy.
Solution Approach 2:
The sampling device performs preliminary collection and concentration of drug substances from breath aerosols before analysis. The device pre-concentrates the analytes in the aerosol phase, which accelerates the subsequent analysis process and reduces the time required for detection compared to traditional methods that require extensive sample preparation from blood or urine.
3Ease of operation
If Exhaled Breath Condensate (EBC) is used for biomarker sampling, then non-invasive sampling is achieved, but sampling efficiency and concentration accuracy deteriorate
Solution Approach 1:
The invention extracts aerosol particles directly from the exhaled breath stream without condensing the entire breath volume. By selectively capturing aerosol-containing particles while allowing most of the breath volume to pass through, the system achieves efficient sampling of target analytes without the dilution problem inherent in EBC methods, thereby improving sampling efficiency while maintaining non-invasive operation.
Solution Approach 2:
The sampling device employs porous sampling elements or filters that allow efficient capture of aerosol particles from exhaled breath. The porous structure provides high surface area for particle deposition while maintaining low resistance to breath flow, enabling effective aerosol collection without requiring large breath volumes or complex condensation apparatus, thus improving sampling efficiency.
4Ease of operation
If Exhaled Breath Condensate (EBC) is used for biomarker sampling, then non-invasive sampling is achieved, but contamination and concentration variability increase
Solution Approach 1:
The invention extracts only aerosol particles from the exhaled breath, separating them from the bulk condensate that causes contamination in EBC methods. By selectively capturing aerosol-containing particles while discarding the water-rich condensate phase, the system minimizes contamination from oral cavity substances and achieves more reliable, consistent measurements while maintaining non-invasive sampling.
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 device provides reliable, quick, and cost-effective detection of illicit drugs and biomarkers, reducing the need for intrusive sampling methods and enabling frequent monitoring with results suitable for medical diagnosis and legal proof.
Implementation Method 1
a sampling membrane arranged to collect the aerosols from the exhaled breath
Data Source
AI summary
A portable drug sampling device for handheldly collecting a sample from exhaled breath of a subject for further sensor based analysis. The device comprising: a housing (406) comprising at least one inlet (407) and at least one outlet (408) for the exhaled breath to exit through, and a sampling membrane (302) arranged in the housing. A tubular element (40) having a mouthpiece section (401) for the subject to exhale into, and a saliva trap section comprising baffles (103) to create a non-straight gas flow path for letting aerosols pass through the tubular element. The sampling membrane (302) is arranged to collect the aerosols from the exhaled breath. The portable drug testing device further comprises a volume collecting element (208).