Microfluidic Cell Co-cultivation Platform with Automatic Trapping
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Solution Overview
Problem
Traditional cell culture methods in petri dishes lack the ability to simulate real-world cell interactions effectively, leading to suboptimal cell quality due to manual cell trapping and inadequate environmental control, which can damage cells and impair cultivation quality.
Innovation Solution
A microfluidic-based platform system for in vitro cell co-cultivation with automatic trapping and dynamic perfusion, utilizing a dynamic culture flow channel module, cell co-cultivation platforms, and a control module to create a controlled environment for cell growth, reduce manual operation errors, and improve cell trapping efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual cell trapping is used in traditional petri dish culture, then operation simplicity is maintained, but cell damage increases and cultivation quality deteriorates
Solution Approach 1:
The patent replaces manual mechanical cell trapping with an automated microfluidic system that uses controlled fluid flow to transport and position cells. The microfluidic channel network automatically guides cells to target locations without manual intervention, eliminating mechanical damage from manual handling while maintaining operational simplicity through automation.
Solution Approach 2:
The system enables self-service cell trapping where the microfluidic structure itself performs cell positioning through its designed channel geometry and flow dynamics. The cells are passively transported and trapped by the fluid flow patterns generated by the perfusion system, without requiring external manual manipulation.
2Reliability
If static culture environment is used in petri dish, then device simplicity is maintained, but cell interaction simulation is insufficient and cell quality deteriorates
Solution Approach 1:
The patent transforms the static petri dish culture environment into a dynamic microfluidic culture system. Culture medium is continuously perfused through the microfluidic channels, creating dynamic flow conditions that simulate in vivo cellular environments. This dynamic environment enhances cell interaction and quality while the modular microfluidic design manages system complexity.
Solution Approach 2:
The system uses hydraulic principles through microfluidic perfusion to create controlled fluid flow environments. Culture medium is pumped through the microfluidic channel network at controlled rates, creating dynamic hydraulic conditions that simulate physiological environments and improve cell quality without requiring overly complex mechanical systems.
3Reliability
If culture medium is not dynamically replaced, then operation simplicity is maintained, but cell waste accumulates and cultivation quality deteriorates
Solution Approach 1:
The patent implements continuous culture medium perfusion through the microfluidic system, replacing static batch culture. Fresh medium is continuously supplied and waste is continuously removed through the flowing medium, maintaining high cultivation quality. The automated perfusion system maintains continuous useful action without requiring frequent manual medium changes.
Solution Approach 2:
The system incorporates automated feedback control through the perfusion system, where medium flow rates and timing are controlled to respond to cell culture needs. The automated control mechanism monitors and adjusts medium replacement timing and flow rates, eliminating the need for manual observation and intervention while maintaining optimal cultivation conditions.
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 constructs a microenvironment suitable for cell growth, enhances cell culture quality by simulating interactions between cells, reduces cell damage through precise trapping, and maintains a healthy culture medium flow to prevent cell waste accumulation, resulting in improved cell culture efficiency and quality.
Implementation Method 1
The cells to be cultivated flow through the cell co-cultivation platforms via the cell flow channel, and respectively stop at corresponding the cell trapping areas according to difference between dynamic flow resistances
Implementation Method 2
Ends of the plurality of perfusion flow channels are radially arranged around the culture medium infusion end, and other ends of the plurality of perfusion flow channels are converged to the culture medium recovery end
Data Source
AI summary
The present disclosure illustrates a platform system for in vitro cell co-cultivation with automatic trapping function. The platform system aims to develop a bio-chip applied in cell culture systems, and has several features. The first feature is that this co-cultivation platform can construct a micro environment suitable for culture of various cells. The second feature is dynamic perfusion. The microfluidic system is used to dynamically replace the culture medium, in order to maintain an appropriate environment for the growth of cells. The third feature is the automatic trapping. The cells to be cultured can be trapped in a suitable location according to the flow resistance, so that the damaged on the cell caused by manual operation can be minimized.