Microfluidic Cell Sorting Chip for Automated Droplet Segregation
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Solution Overview
Problem
Current single cell sorting methods are expensive, require high operator skills, and are prone to cross-pollution due to their dependence on instruments like FACS and manual techniques, which are not portable or cost-effective for real-time analysis.
Innovation Solution
A device for driving a cell processing chip that includes a bearing member, an accommodating member, a fluid driving member, a signal generating and processing member, and a power supply, which enables efficient and automated cell processing by generating and sorting droplets using air pressure and optical signals, reducing the need for complex instruments and minimizing operator dependence.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If FACS and manual techniques are used for single cell sorting, then sorting capability is achieved, but cost is high and operator skill requirement is high
Solution Approach 1:
The system segments the complex FACS instrument functionality into a modular microfluidic chip that can be integrated with simpler, more affordable components. The chip divides the sorting process into distinct functional zones (droplet generation, encapsulation, sorting) that can be independently optimized and manufactured, reducing overall system complexity while maintaining sorting capability.
Solution Approach 2:
The patent replaces the complex mechanical and optical systems of traditional FACS instruments with a microfluidic-based system that uses controlled fluid flow, pressure gradients, and electrostatic fields. This substitution eliminates the need for sophisticated mechanical sorting mechanisms and reduces dependency on operator skill for manual manipulation.
2Reliability
If FACS and manual techniques are used for single cell sorting, then sorting capability is achieved, but portability is poor
Solution Approach 1:
The microfluidic sorting chip is designed as a compact, nested structure where multiple functional channels and chambers are integrated into a single small-scale device. This nested architecture allows the entire sorting system to be miniaturized and potentially integrated into portable handheld devices, dramatically improving portability while preserving sorting functionality.
Solution Approach 2:
The system transitions from the bulky three-dimensional architecture of traditional FACS instruments to a planar, two-dimensional microfluidic chip design. This dimensional change enables the sorting functionality to be compressed into a thin, lightweight format that can be easily integrated into portable devices without sacrificing performance.
3Ease of operation
If manual techniques are used for cell processing, then flexibility is maintained, but cross-pollution occurs
Solution Approach 1:
The system extracts the cell processing function from the manual operator environment and places it within a closed, automated microfluidic system. This extraction isolates the cells from external contamination sources while maintaining operational flexibility through programmable fluid control and automated sorting sequences that can be adjusted without manual intervention.
Solution Approach 2:
The microfluidic chip incorporates integrated fluid management systems that automatically control reagent delivery, sample flow, and waste removal without manual intervention. This self-service capability eliminates the need for operators to manually handle samples and reagents, thereby preventing cross-pollution while maintaining operational flexibility through programmable control.
4Object-affected harmful factors
If automated microfluidic system is implemented, then cross-pollution is eliminated and portability is improved, but device complexity increases
Solution Approach 1:
The patent merges multiple functions (fluid pumping, mixing, droplet generation, sorting, and detection) into a single integrated microfluidic chip. This consolidation reduces the number of separate components and connections required, thereby simplifying the overall system architecture while eliminating cross-pollution through the closed integrated design.
Solution Approach 2:
The microfluidic chip is designed as a universal platform that can perform multiple cell processing functions through programmable fluid control and reconfigurable sorting parameters. This multi-functionality reduces the need for multiple specialized devices, thereby managing complexity while providing comprehensive automated processing capabilities that eliminate cross-pollution.
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 facilitates miniaturization, portability, and real-time sensing, reducing operational costs, eliminating cross-pollution, and improving cell treatment efficiency through automated and precise control of fluid flow and signal processing.
Implementation Method 1
a light source configured to provide an optical signal to the fluid in the cell processing chip through an optical transmission medium
Implementation Method 2
an optical sensor configured to receive a response signal of the fluid through the optical transmission medium
Implementation Method 3
a fluid driving member configured to drive flow of fluid in the device and in the cell processing chip
Data Source
AI summary
The present application discloses a device for driving a cell processing chip and a method of driving a cell processing chip. The cell processing chip is configured to process cells. The device for driving the cell processing chip includes a bearing member configured to carry the cell processing chip, an accommodating member in fluid communication with the cell processing chip, a fluid driving member configured to drive flow of fluid in the device and in the cell processing chip, a signal generating and processing member configured to apply a signal to a fluid in the cell processing chip to generate a response signal associated with the fluid, and configured to issue a control instruction, and a power supply configured to supply power to the fluid driving member, and configured to apply a sorting signal to the cell processing chip in response to the control instruction.