Microfluidic Flow-Through Electroporation Module
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Solution Overview
Problem
Traditional electroporation systems face inefficiencies due to high current requirements, environmental distortions, and difficulty in automation, leading to low electroporation efficiency and cell viability, and are not easily integrated into automated cell processing systems.
Innovation Solution
A microfluidic flow-through electroporation device with a narrow, parallelized flow channel configuration that adjusts electric field strength and pressure to efficiently introduce exogenous materials into cells, reducing clogging risks and enabling integration into automated multi-module cell processing systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If traditional electroporation systems are used, then high current input can achieve electroporation, but adverse environmental conditions such as electric field distortion, local pH variation, metal ion dissolution and excess heat generation occur leading to low electroporation efficiency and cell viability
Solution Approach 1:
The patent replaces traditional high-current electrical electroporation with a microfluidic flow-through system that uses controlled fluid dynamics and low-current pulsed electric fields. The microfluidic channel geometry and flow rate control substitute for the need for high current, achieving electroporation through optimized electric field distribution rather than brute-force current input.
Solution Approach 2:
The invention changes multiple parameters simultaneously: reducing current from high to low levels, optimizing electric field strength and duration, controlling flow rate through the microfluidic channel, and adjusting cell concentration. These parameter changes work together to achieve effective electroporation while avoiding the harmful effects of traditional high-current systems.
2Extent of automation
If traditional electroporation systems are used, then electroporation can be performed, but they are not easily automated or incorporated into automated cell processing systems
Solution Approach 1:
The electroporation device is segmented into distinct functional modules: a microfluidic chip with integrated channels and electrodes, a separate pump system for fluid control, and a control unit for automation. This modular segmentation allows the electroporation module to be easily integrated into larger automated cell processing systems while maintaining operational independence.
Solution Approach 2:
The microfluidic electroporation system is designed with universal interfaces and standardized connections that enable it to function as both a standalone device and an integrated component of automated cell processing systems. The system can perform multiple functions including cell delivery, electroporation, and product recovery within a single platform.
3Productivity
If narrow flow channels are used to increase electric field strength, then electroporation efficiency improves, but the risk of clogging increases
Solution Approach 1:
The system dynamically adjusts flow rate in real-time based on cell concentration and channel geometry. The flow rate is optimized to maintain sufficient velocity to prevent cell deposition and clogging while ensuring adequate residence time in the high electric field region for effective electroporation. This dynamic control resolves the contradiction between narrow channel benefits and clogging risks.
Solution Approach 2:
The invention changes the physical parameters of the system: using specific microfluidic channel dimensions (width, height, length), controlling electric field strength and pulse duration, and optimizing flow rate. These parameter changes are interrelated - for example, smaller channels require lower flow rates to prevent clogging, which is compensated by optimizing electric field parameters to maintain electroporation efficiency.
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 achieves high-efficiency cell electroporation with low toxicity and easy integration into automated systems, allowing for rapid transformation of cells while maintaining viability and reducing the risk of catastrophic failures.
Implementation Method 1
Electroporation, also known as electropermeabilization, substantially increases cell membrane permeability in the presence of a pulsed electric field
Implementation Method 2
adjusting the pressure driving the fluid flow through the device
Data Source
AI summary
The present disclosure provides a flow-through electroporation device configured for use in an automated multi-module cell processing environment and configured to decrease cell processing time and the risk of clogging.