Cell Perfusion Wells With Sequential Flow for Stable Homeostasis
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Solution Overview
Problem
Conventional cell culture methods lack dynamic perfusion systems that mimic the continuous nutrient supply and waste removal of real tissues, leading to uneven homeostasis and metabolic stress in cells.
Innovation Solution
A cell-perfusion system with interconnected cell-culture wells and fluid pathways allows for sequential fluid flow, incorporating cellular matter and 3D structures, including endothelial cells and extracellular matrices, to simulate tissue perfusion and study cell interactions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If conventional cell culture media changing is used, then cells are maintained in static culture conditions, but this results in uneven homeostasis and metabolic shock to cells
Solution Approach 1:
The patent implements continuous perfusion of culture media through the cell culture system, replacing the discontinuous manual media changing approach. This continuous flow ensures constant refreshment of nutrients and oxygen while removing waste products, maintaining stable homeostasis and preventing metabolic shock to cells.
Solution Approach 2:
The patent employs hydraulic perfusion systems to deliver culture media through the cell culture inserts. The fluid flow is controlled through pressure-driven perfusion, enabling dynamic circulation of media that mimics physiological conditions and eliminates the static culture environment.
2Quantity of substance
If frequent manual changing of culture media is performed, then nutrients are replenished, but this creates uneven homeostasis and disturbs cell metabolism
Solution Approach 1:
The continuous perfusion system provides constant nutrient supply through uninterrupted media flow, eliminating the need for frequent manual interventions. This ensures both adequate nutrient availability and stable homeostatic conditions throughout the culture period.
Solution Approach 2:
The perfusion system is designed to automatically maintain culture conditions through continuous media circulation, eliminating the need for manual media changing operations. The system self-regulates nutrient supply and waste removal, maintaining stable homeostasis without external intervention.
3Ease of operation
If static culture conditions are used, then the system is simple to operate, but diffusion of molecules is insufficient for optimal cell function
Solution Approach 1:
The patent employs hydraulic perfusion to enhance molecular transport across the culture system. The controlled fluid flow actively delivers nutrients and removes waste products, significantly improving diffusion efficiency compared to static conditions while maintaining ease of operation through automated flow control.
4Stability of the object's composition
If 3D cellular structures are implemented, then tissue architecture is preserved, but the system complexity increases
Solution Approach 1:
The patent uses modular culture inserts with 3D cellular structures that can be independently cultured and then assembled into the perfusion system. This segmentation allows preservation of complex tissue architecture while managing system complexity through standardized, interchangeable modules.
Solution Approach 2:
The perfusion system is designed with universal interfaces and standardized culture inserts that can accommodate various 3D cellular structures. This multi-functionality allows the same perfusion platform to support different tissue types and 3D configurations without increasing overall system 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
Enhances cell culture models by maintaining consistent nutrient supply and waste removal, reducing unstirred layers, and enabling controlled shear stress for improved cell behavior and biological process simulation.
Implementation Method 1
a fluid pathway interconnecting the first cell-culture well and the second cell-culture well so as to allow for fluid to flow through the sequence in a sequential manner
Implementation Method 2
Such dynamic flow can also be controlled to reduce unstirred layers to improve diffusion
Implementation Method 3
introduce shear stresses to affect cell behavior
Data Source
AI summary
Cell perfusion systems are disclosed which comprise: a sequence of at least two cell-culture wells comprising: a first cell-culture well which comprises a first population of cells; a second cell-culture well which comprises a second. non-identical population of cells; and a fluid pathway interconnecting the cell culture wells.