Integrated Microfluidic Chip for Vortex-Driven Extraction and Separation
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Solution Overview
Problem
Conventional extraction and separation processes for biological or chemical samples require large amounts of sample material, reagents, and labor, and are inefficient in integrating compound extraction and separation operations.
Innovation Solution
A microfluidic chip integrating a sample loading chamber, processing chamber, filtering elements, chromatography column, and detection region, with actuation and valve elements, allowing for vortex generation and pressure control to perform extraction, separation, and detection in a single chip.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional extraction and separation processes are used, then compounds can be extracted and separated from samples, but large amounts of sample material, reagents, and labor are required
Solution Approach 1:
The patent integrates multiple extraction and separation operations into a single microfluidic chip system. The chip combines a processing chamber, first filtering element, chromatography column, and detection region into one integrated device, allowing extraction, separation, and detection to occur sequentially without transferring samples between multiple conventional equipment pieces, thereby reducing sample and reagent consumption while maintaining productivity
Solution Approach 2:
The invention transitions from macro-scale conventional extraction equipment to micro-scale microfluidic operations. By miniaturizing the extraction and separation processes into microchannels and micro-compartments, the system achieves the same separation functionality with dramatically reduced volumes of sample material and reagents required
2Productivity
If conventional extraction and separation processes are used, then compounds can be extracted and separated, but significant labor and time are consumed
Solution Approach 1:
The microfluidic chip enables continuous operation where extraction, separation, and detection occur in an uninterrupted sequential flow. The integrated design allows the sample to flow continuously through the processing chamber, filtering element, and chromatography column without manual intervention or transfer steps, eliminating idle time and reducing overall operation time
Solution Approach 2:
The actuation element with driving membrane automatically controls the liquid flow through the microfluidic chip, generating vortexes and pressure changes to drive the extraction and separation processes without manual operation. The system self-regulates the flow through valve elements and processing chambers, reducing labor requirements while maintaining high productivity
3Quantity of substance
If integrated microfluidic chip is used, then material and labor requirements are reduced, but device complexity increases
Solution Approach 1:
The microfluidic chip is designed as a multi-functional integrated device that performs extraction, separation, filtration, and detection functions within a single chip structure. The processing chamber serves multiple purposes including vortex generation, pressure control, and sample processing, while the chromatography column integrates separation and detection capabilities, reducing the need for multiple separate equipment pieces
Solution Approach 2:
The patent introduces a control system with valve elements and actuation elements that mediate the complex operations within the microfluidic chip. The valve elements control liquid flow direction and timing, while the actuation element with driving membrane mediates pressure control and vortex generation, simplifying the user interface while managing the inherent device complexity
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 microfluidic chip enables efficient extraction and separation of compounds with reduced material and labor requirements, allowing for direct detection and integration of sample concentration and weight determination, improving separation efficiency and reducing dead volume and contamination.
Implementation Method 1
the actuation element includes a driving membrane and is configured to generate a vortex in the processing chamber
Implementation Method 2
the actuation element includes a driving membrane and is configured to generate a vortex in the processing chamber and control the pressure within the processing chamber
Implementation Method 3
a chromatography column, a liquid channel system, and a detection region, which are sequentially communicated
Data Source
AI summary
A microfluidic chip includes: a sample loading chamber, a processing chamber, a first filtering element, a chromatography column, a liquid channel system, and a detection region which are sequentially communicated. The microfluidic chip further includes: a first valve element, a second valve element, and an actuation element. The first valve element is disposed between the sample loading chamber and the processing chamber. The second valve element is disposed between the processing chamber and the first filtering element. The actuation element is disposed over the processing chamber and includes a driving membrane, configured to generate vortices in the processing chamber and control the pressure within the processing chamber.