Colorimetric Test Strips for Detecting Drugs on Vaping Surfaces
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Solution Overview
Problem
There is a need for a cost-effective, portable, and mass-producible method to identify harmful and illicit substances, such as nicotine, cannabinoids, and drugs of abuse, on vaping device surfaces and in vaping liquid formulations, as the use of electronic cigarettes has increased, raising health concerns and reports of substance ingestion are rising.
Innovation Solution
A portable test kit using a colorimetric presumptive test kit with a colorimetric reagent and catalytic reagent affixed to a solid support carrier, which undergoes a chemical reaction with target drugs to produce a visible color change, utilizing materials like cotton swabs and paper cards for rapid identification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If complex laboratory methods are used to detect drugs of abuse, then detection accuracy is improved, but device complexity and cost increase
Solution Approach 1:
The patent employs disposable test strips containing colorimetric reagents that can be discarded after single use. These strips simplify the detection system by eliminating the need for complex, reusable laboratory equipment while maintaining adequate detection accuracy for field applications.
Solution Approach 2:
The patent replaces complex mechanical and electronic detection systems with a simple colorimetric chemical reaction system. The detection mechanism relies on color changes in reagent strips rather than sophisticated instrumentation, significantly reducing device complexity while preserving measurement capability.
2Ease of operation
If portable test kits are designed for field deployment, then ease of operation is improved, but manufacturing precision and reliability may worsen
Solution Approach 1:
The patent incorporates reagent strips that are pre-loaded with colorimetric reagents during manufacturing. This preliminary preparation ensures that when the test strip is used in the field, the reagents are already in the correct positions and concentrations, eliminating the need for complex field assembly while maintaining test precision.
Solution Approach 2:
The patent optimizes the physical and chemical parameters of the test strips during manufacturing to ensure consistent performance. By controlling factors such as reagent concentration, strip material porosity, and coating uniformity during production, the patent achieves reliable field deployment without sacrificing manufacturing precision.
3Ease of manufacture
If mass production is implemented to reduce cost, then ease of manufacture is improved, but product quality and reliability may worsen
Solution Approach 1:
The patent utilizes porous test strip materials that allow uniform distribution and absorption of colorimetric reagents. The porous structure ensures consistent reagent placement across mass-produced strips, maintaining reliable detection performance while enabling scalable manufacturing processes.
Solution Approach 2:
The test strip design allows the reagents to automatically distribute and react with target substances without requiring external intervention. This self-service mechanism ensures consistent detection results across mass-produced units, as each strip performs the detection function independently and reliably.
4Speed
If rapid colorimetric detection is used, then speed of detection is improved, but measurement precision may worsen due to presumptive nature
Solution Approach 1:
The patent employs colorimetric reagents that undergo distinct color changes when reacting with target drugs of abuse. These color changes occur rapidly and provide immediate visual indication of detection, achieving both speed and adequate precision through carefully selected reagents with high color contrast and specific reaction characteristics.
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 kit provides rapid, presumptive identification of nicotine, cannabinoids, and drugs of abuse with a low false detection rate, achieving commercial shelf life and mass production capabilities, while being economically cheaper than existing methods.
Implementation Method 1
The colorimetric reagent and the catalytic reagent are configured to undergo chemical reaction with at least one target drug of abuse to produce a visible color change
Implementation Method 2
a catalytic reagent, a solid support carrier upon which the colorimetric reagent and the catalytic reagent are affixed
Data Source
AI summary
Provided herein is a portable test device, mass manufacture method and method of use for identification of at least one target drug of abuse. The portable detection kit can include a catalytic reagent, a solid support carrier, and an absorbent material. The colorimetric reagent and the catalytic reagent can be are affixed to the solid support carrier to form a reaction zone thereon. The colorimetric reagent and the catalytic reagent are configured to undergo chemical reaction with at least one target drug of abuse to produce a visible color change. The at least one target drug of abuse is selected from the group consisting of nicotine, cannabinoids, amphetamines, opioids, or cocaine. A target drug of abuse can be on vaping device surfaces and/or within vaping liquid formulations.