Portable Bed Bug Detection Device Using Lateral Flow Assay
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Solution Overview
Problem
Current methods for detecting bed bugs are ineffective and unreliable, often requiring expensive off-site DNA testing and taking 24 to 48 hours to produce results, making them impractical for on-site identification.
Innovation Solution
A portable detection device that uses a lateral flow assay test to detect bed bugs by monitoring the flow of a sample fluid past a reagent portion containing colored particles and antibodies, allowing for rapid on-site identification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If off-site DNA testing equipment is used to detect bed bugs, then measurement precision is improved, but loss of time increases to 24-48 hours
Solution Approach 1:
The patent extracts the essential detection function from complex off-site DNA testing equipment and implements it in a simplified portable device using lateral flow assay technology. This extraction allows the device to maintain sufficient detection precision while dramatically reducing testing time from 24-48 hours to minutes, resolving the contradiction between measurement precision and time loss.
Solution Approach 2:
The patent employs disposable test strips with pre-loaded reagents and antibodies for lateral flow assays. These single-use components enable rapid detection without requiring complex, expensive, or time-consuming equipment setup and teardown, thus achieving both quick results and adequate detection accuracy in a portable format.
2Measurement precision
If off-site testing labs are used for bed bug residue analysis, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent extracts the core analytical function from complex off-site lab equipment and consolidates it into a simple portable device using lateral flow assay technology. This extraction eliminates the need for complex DNA testing equipment while maintaining sufficient precision for bed bug detection through optimized reagent and antibody configurations on test strips.
Solution Approach 2:
The portable detection device is designed to be self-contained with pre-loaded reagents, antibodies, and control mechanisms on the test strips. The device automatically processes samples through capillary action and provides results without requiring complex external equipment or laboratory infrastructure, thus reducing device complexity while maintaining measurement precision.
3Ease of operation
If visual inspection methods are used to detect bed bugs, then ease of operation is improved, but reliability deteriorates
Solution Approach 1:
The patent replaces manual visual inspection with an automated immunological detection system based on lateral flow assays. The device uses antibody-antigen binding reactions and optical detection to automatically identify bed bugs, eliminating the subjectivity and unreliability of visual inspection while maintaining ease of operation through simple sample application and automated result reading.
Solution Approach 2:
The patent employs colorimetric detection in the lateral flow assay where test lines change color based on the presence of bed bug antigens. This color change provides a clear, objective, and reliable visual indicator that is easier to interpret than direct visual inspection of bed bugs, thereby improving reliability while maintaining ease of operation.
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 can detect the presence of bed bugs within minutes, providing a rapid and reliable solution for on-site identification, reducing the need for expensive off-site testing and improving efficiency in pest control operations.
Implementation Method 1
the reagent portion contains antibodies conjugated to colored particles, and wherein the conjugated antibodies are capable of binding with any bed bug antigen within the test fluid to form bed bug molecules
Implementation Method 2
A first optical sensor within the detection device monitors a reaction color intensity of the reaction portion of the test strip as immobilized antibodies within the reaction portion bind with the bed bug molecules
Implementation Method 3
A first optical sensor within the detection device monitors a reaction color intensity of the reaction portion of the test strip
Data Source
AI summary
System and method embodiments for analyzing a test fluid to detect prior or present infestations of bed bugs are described. In an embodiment, the method may include receiving the test fluid on a test strip within the detection device. The test strip may include a reaction portion and a reagent portion containing an antibody or antigen-binding fragment that is conjugated to a colored particle. The test fluid may include bed bug antigen that reacts with the conjugated antibody. The detection device may include a first and a second optical sensor for monitoring a reaction and a background color intensity, respectively. Upon a predetermined time delay elapsing, the detection device determines whether bed bug antigen is present in the test fluid using the monitored color intensities and minimum and maximum color intensity thresholds associated with bed bugs. Then, the detection device outputs a result using a visual display.