Microfluidic Electroporation with Planar Flow Channel
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Solution Overview
Problem
Current electroporation systems lack scalability, flow control, and uniformity of electric field, making them inefficient for modifying cells, particularly in handling small samples and optimizing parameters for cell modifications.
Innovation Solution
A microfluidic device with a planar flow channel, paired electrodes, and a modular system for fluid and voltage control, allowing for efficient handling of small samples and scalable optimization of electroporation parameters, including cell type, concentration, and voltage waveform, to enhance transfection efficiency and cell viability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If cylindrical pipette tips with electrodes are used for electroporation, then the device structure is simple, but the scalability, flow control, and uniformity of electric field are poor
Solution Approach 1:
The device is segmented into distinct functional modules: a microfluidic chip with planar flow channel, separate electrode assembly, and integrated control system. This segmentation allows each component to be optimized independently, achieving uniform electric field distribution in the planar channel while maintaining overall system simplicity.
Solution Approach 2:
The invention transitions from a cylindrical three-dimensional electrode configuration to a planar two-dimensional flow channel with flat electrodes. This dimensional change enables superior electric field uniformity and scalability while preserving ease of manufacturing through standard microfabrication techniques.
2Device complexity
If traditional electroporation systems are used, then the system structure is simple, but the ability to handle small samples and optimize parameters efficiently is limited
Solution Approach 1:
The system employs a microfluidic hydraulic system with integrated pumps and flow control mechanisms to precisely deliver small sample volumes through the planar channel. This enables efficient handling and rapid processing of small samples while maintaining system structural simplicity through integration.
Solution Approach 2:
The system incorporates integrated control modules that enable rapid adjustment of electroporation parameters (voltage, pulse duration, flow rate) without restructuring the device. This allows efficient optimization for different cell types and small sample conditions while keeping the base device structure simple and modular.
3Device complexity
If conventional electroporation devices are used, then the device design is straightforward, but the scalability from small to large volume systems is poor
Solution Approach 1:
The planar microfluidic chip design serves as a universal platform that can process various cell types and sample volumes. The standardized interface and modular architecture allow seamless scaling from small research samples to larger production volumes by simply adjusting flow parameters and connecting multiple chips in parallel, without redesigning the core device structure.
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 system enables precise control over electroporation conditions, achieving high transfection efficiency and cell viability, as demonstrated by 97% GFP expression with 95.2% viability using a specific voltage waveform, and allows for rapid testing of various conditions across multiple samples.
Implementation Method 1
Electroporation is a process used to modify cells by insertion of biomolecules
Data Source
AI summary
Disclosed are microfluidic flow-based electroporation systems that have a flow device, an electrical control module, a fluid delivery module, and a multi-well module. The systems can be used in methods of selecting an electroporation parameter, and in methods of electroporating cells using the selected parameters.