Microfluidic Cartridge Flow Design for Rapid Analyte Detection
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Solution Overview
Problem
Conventional technologies for molecule detection, such as nucleic acids and proteins, require expensive equipment and expert personnel, leading to delays in identifying pathogens, diseases, and contaminations, which can spread and cause harm before proper tests are conducted.
Innovation Solution
A microfluidic system comprising a cartridge device with a sample analysis cartridge, reader device, and sample collection device, using magnetic particles, affinity molecules, and signaling agents to detect analytes, allowing for rapid analysis in non-clinical settings with minimal biohazard risks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If conventional molecule detection technologies are used, then detection accuracy can be maintained, but detection time is significantly extended and requires expensive equipment and expert personnel
Solution Approach 1:
The system is divided into modular components: a disposable cartridge containing pre-loaded reagents and magnetic particles, a separate reader device for detection, and a sample collection device. This segmentation allows the complex detection chemistry to be pre-packaged in simple cartridges that can be used without expert knowledge, reducing both detection time and the complexity of equipment operation.
Solution Approach 2:
Reagents, magnetic particles with affinity molecules, and other detection components are pre-loaded and prepared within the cartridge before use. This preliminary preparation eliminates the need for complex in-lab setup and reduces detection time while maintaining accuracy, as the system is ready for immediate use upon sample insertion.
2Reliability
If conventional detection methods are employed, then thorough analysis can be achieved, but the spread of illnesses and contaminations increases due to delayed results
Solution Approach 1:
Magnetic particles with surface-bound affinity molecules serve as intermediaries that capture target analytes from the sample and concentrate them for detection. This intermediary step enables rapid and reliable detection of pathogens and contaminants, reducing the time delay that allows illness and contamination to spread while maintaining detection accuracy.
Solution Approach 2:
The system replaces complex mechanical laboratory equipment with a simplified magnetic-based detection approach. Magnetic fields are used to manipulate particles and reagents within the cartridge, eliminating the need for complex mechanical mixing, centrifugation, or handling equipment, thereby enabling rapid detection that prevents spread of illness.
3Ease of operation
If simple detection devices are used, then ease of operation improves, but detection precision and accuracy may be compromised
Solution Approach 1:
The cartridge is designed as a self-contained system that automatically performs mixing, incubation, and detection steps when the sample is inserted and the reader is activated. The pre-loaded reagents and magnetic particles self-assemble and react without user intervention, enabling operation by non-experts while maintaining high detection precision through controlled chemical reactions.
Solution Approach 2:
The system uses magnetic field strength as a controllable parameter to manipulate particle behavior and optimize detection. By adjusting magnetic field parameters in the reader device, the system achieves precise control over particle concentration and positioning, maintaining measurement precision despite the simplicity of the overall device design.
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
Enables rapid and accurate detection of molecules in various settings, reducing the need for specialized expertise and equipment, thereby minimizing the spread of illnesses and contaminations.
Implementation Method 1
a plurality of magnetic particles each having surface-bound affinity molecules
Implementation Method 2
surface-bound affinity molecules
Implementation Method 3
The reagent shuttle may be designed to move within the input tunnel when subjected to a force greater than a threshold force
Implementation Method 4
The sensor may be configured to analyze the fluid mixed with the reagent ball and the sample and further configured to generate a signal indicative of at least one of the presence, absence, or quantity of the one or more analytes within the sample
Data Source
AI summary
Devices, systems, and methods for detecting molecules of interest within a collected sample are described herein. In certain embodiments, self-contained sample analysis systems are disclosed, which include a reusable reader component, a disposable cartridge component, and a disposable sample collection component. The reader component may communicate with a remote computing device for the digital transmission of test protocols and test results. In various disclosed embodiments, the systems, components, and methods are configured to identify the presence, absence, and/or quantity of particular nucleic acids, proteins, or other analytes of interest, for example, in order to test for the presence of one or more pathogens or contaminants in a sample.