Microfluidic Division Chamber Segmentation for Parallel Analysis
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current microfluidic diagnosis systems face challenges in efficiently subdividing and analyzing sample solutions for multiple parameters due to limitations in miniaturization, parallelization, and the risk of cross-contamination, which hinders efficient detection reactions and increases analysis time and costs.
Innovation Solution
A microfluidic system with a division chamber and a displacing device, such as a flexible membrane, allows for the subdivision of sample solutions into partial volumes for independent reactions, enabling miniaturization and increased parallelization, while minimizing cross-contamination through physical separation and the use of hydrophilic/hydrophobic surfaces for accelerated reaction kinetics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a microfluidic system uses a single chamber for sample analysis, then the device complexity is low, but the ability to perform multiple detection reactions in parallel is limited and cross-contamination risk increases
Solution Approach 1:
The single chamber is divided into multiple partial volume segments that can accommodate different detection reactions simultaneously. The displacing device creates physical barriers within the chamber, segmenting the sample volume into isolated reaction zones without requiring multiple separate chambers, thus enabling parallel reactions while maintaining relatively simple device structure.
Solution Approach 2:
Instead of using multiple separate chambers in different spatial locations, the invention utilizes the volume dimension within a single chamber by creating multiple isolated partial volumes through the displacing device. This dimensional approach allows multiple reactions to occur simultaneously in the same physical space without increasing device footprint or complexity.
2Volume of moving object
If the system miniaturizes the analysis chamber, then the device size is reduced, but the ability to subdivide sample volumes for parallel reactions is limited
Solution Approach 1:
The miniaturized chamber volume is segmented into multiple smaller partial volumes using the displacing device. This segmentation allows the small chamber to accommodate multiple independent reaction zones, enabling parallel reactions despite the reduced overall chamber size, thus maintaining high productivity in a compact format.
Solution Approach 2:
Multiple reaction zones are nested within the single miniaturized chamber volume through the use of the displacing device that creates hierarchical compartmentalization. This nesting approach allows multiple reaction chambers to coexist within a small footprint, achieving both miniaturization and parallelization.
3Device complexity
If multiple detection reactions are performed in the same chamber, then device complexity is low, but cross-contamination between reactions increases
Solution Approach 1:
The displacing device creates physical segmentation within the chamber, forming distinct partial volume segments that are isolated from each other. This physical separation prevents cross-contamination between different detection reactions while maintaining a simple single-chamber device structure, thus achieving both low complexity and high reliability.
Solution Approach 2:
The displacing device acts as an intermediary structure that physically separates different reaction zones within the chamber. This intermediary creates impermeable barriers between partial volumes, preventing contaminant transfer while allowing the system to perform multiple reactions in what would otherwise be a contaminated environment.
4Reliability
If the analysis time is extended to ensure complete reactions, then reaction completeness is improved, but the time-to-result increases
Solution Approach 1:
The displacing device creates isolated partial volumes with controlled reagent-to-sample ratios that optimize reaction conditions for faster kinetics. By providing exactly the necessary reagents in each segmented zone without excess volume, the system achieves complete reactions more quickly, reducing time-to-result while maintaining reaction completeness.
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
This approach enables efficient analysis of sample solutions by allowing multiple detection reactions in parallel, reducing analysis time and costs, and minimizing cross-contamination, thereby enhancing sensitivity and time-to-result.
Implementation Method 1
By means of a displacement device or installation of a flexible membrane that is deflectable or deformable at predetermined sites, it can become possible to advantageously manipulate liquids or liquid samples
Implementation Method 2
For the purpose of sample division, one can optionally modify surfaces of the chamber at specified sites, for example in order to achieve hydrophilic and/or hydrophobic properties
Data Source
AI summary
A microfluidic system for analyzing a sample solution includes a division chamber for accommodating an input volume of the sample solution. The division chamber has a plurality of partial volume segments for accommodating a plurality of partial volumes of the sample solution, which partial volumes can be used for detection reactions. The microfluidic system also has a displacing device configured to divide the input volume into the plurality of partial volumes.