Flexible Culture Vessel for Mass Cell Aggregation
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Solution Overview
Problem
Current cell culture methods, such as well plates and sealable tray vessels, are inadequate for mass production of cells due to high contamination risks, operator skill dependence, and inefficiencies in handling and contamination control, particularly for regenerative therapies like neural stem cell cultures.
Innovation Solution
A cell culture method using a flexible culture vessel with a deformable pouch structure, applied pressure to form recessed and projected portions on the vessel surface, and a cell culture apparatus with a placement surface and pressure control unit to facilitate high-quality, large-scale cell culture with reduced contamination risks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a flexible culture vessel is used for mass production of cells, then productivity is improved and contamination risk is reduced, but the ability to form cell aggregates is insufficient
Solution Approach 1:
The patent applies preliminary action by forming recessed portions on the culture surface before cell culture begins. These pre-formed recessed portions serve as designated sites where cells will naturally gather and form aggregates during culture, eliminating the need for manual intervention while ensuring reliable aggregate formation in flexible culture vessels designed for mass production
2Reliability
If conventional culture vessels with recessed portions are used, then cell aggregate formation is facilitated, but device complexity and handling difficulty increase
Solution Approach 1:
The patent employs flexible shells and thin films by using a flexible culture vessel whose culture surface can be deformed through external pressure application. This allows the vessel to transition from a flat state to a state with recessed portions formed by pressure, enabling aggregate formation without requiring permanently complex three-dimensional structures that would increase device complexity and handling difficulty
3Reliability
If a worker manually handles culture vessels for cell culture, then cell aggregate formation can be controlled, but operation errors and contamination risks increase
Solution Approach 1:
The patent implements self-service by designing a system where the flexible culture vessel automatically forms the necessary recessed portions through application of external pressure, eliminating the need for manual manipulation. The vessel self-adjusts its surface topology to facilitate aggregate formation, reducing reliance on worker skill and minimizing operation errors and contamination risks associated with manual handling
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
Enables mass-culture of cells with reduced contamination risk and high quality by forming aggregates as needed, improving handling efficiency and reducing operator errors, while maintaining a controlled environment for optimal cell growth.
Implementation Method 1
a flexible culture vessel having gas permeability
Data Source
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Figure 3(a)~3(c)
AI summary
Provided is a mass culture method for cells, which uses a culture vessel having flexibility, can form cell aggregates as needed, and is reduced in contamination risk. A pressure is applied onto a culture vessel, which has flexibility, is filled with cells and a culture fluid, and is placed on a placement surface having one or more depressions. With recessed and projected portions, which conform to the depressions, being formed on and in an outer surface of the culture fluid vessel under the application of the pressure, the cells in the culture vessel are cultured.