Cell Culture Carrier Module with Movable Fixers for Scale-Up
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Solution Overview
Problem
Current cell culture carrier materials face challenges such as animal contaminants, difficulty in degrading synthetic materials, and limitations in scaling up cell production, leading to issues with cell recovery rate and quality.
Innovation Solution
A cell culture carrier module with a movable second fixer that allows cell culture carriers to switch between twisted and untwisted states, enhancing cell adhesion and recovery by varying the distance between fixers, and using materials like polyester and polypropylene for the carriers and reactor components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If natural materials such as collagen, chitosan, or gelatin are used for cell culture carriers, then cytotoxicity is reduced and biocompatibility is improved, but the risk of animal contamination increases
Solution Approach 1:
The patent changes the material parameter from natural animal-derived materials to synthetic materials with controlled degradation properties. The synthetic polymer materials are designed to have specific degradation rates and mechanisms that eliminate animal contamination risks while maintaining biocompatibility through controlled breakdown into non-toxic byproducts.
Solution Approach 2:
The patent employs composite material structures combining synthetic polymers with carefully selected natural polymer components or surface coatings. This allows the carrier to achieve the mechanical strength and degradation control of synthetic materials while incorporating biocompatible surface properties, thus resolving the contradiction between avoiding animal contamination and maintaining high biocompatibility.
2Object-affected harmful factors
If synthetic materials such as PCL, PS, PP, or PLGA are used for cell culture carriers, then animal contamination risk is reduced, but degradability is poor and cell recovery becomes difficult
Solution Approach 1:
The patent modifies the degradation parameter of synthetic polymer materials by selecting specific polymer types and molecular weight ranges that enable controlled degradation. The materials are engineered to degrade at rates suitable for cell culture cycles, transforming from permanently persistent synthetic materials to temporarily stable materials that naturally break down, thereby enabling easy cell recovery without mechanical disruption.
Solution Approach 2:
The patent introduces dynamic properties to the cell culture carrier through time-dependent degradation behavior. The carrier maintains structural integrity during the culture period but dynamically transitions to a degraded state for easy cell release. This dynamic characteristic allows the material to adapt its properties over time, providing stability when needed and ease of recovery when required.
3Ease of manufacture
If alginate-based products are used for cell culture carriers, then degradability is improved, but high calcium ion concentration is required which may damage cells or induce differentiation
Solution Approach 1:
The patent changes the chemical composition parameter of the degradable polymer to eliminate calcium ion dependency. Instead of using calcium-crosslinked alginate that requires high calcium concentrations for degradation, the patent employs synthetic polymers or alternative natural polymers that degrade through hydrolysis or enzymatic breakdown without requiring high calcium environments, thus preventing cell damage and unwanted differentiation.
Solution Approach 2:
The patent introduces alternative degradation mechanisms that act as intermediaries between the carrier material and the cellular environment. Rather than directly using calcium ions as the degradation trigger (which harms cells), the patent employs water molecules or specific enzymes as intermediary agents that facilitate material breakdown under physiological conditions, thereby protecting cells from damage while achieving effective degradation.
4Device complexity
If conventional two-dimensional flat plate culture method is used, then current technology is simple and established, but scaling up to larger production is not feasible and cell yield is limited
Solution Approach 1:
The patent transitions from two-dimensional flat plate culture to three-dimensional carrier-based culture systems. By introducing the third dimension through vertically suspended or stacked carrier structures, the system dramatically increases the available surface area for cell attachment and growth within the same footprint volume, enabling scale-up from laboratory to production levels while maintaining operational simplicity.
Solution Approach 2:
The patent divides the cell culture system into multiple independent carrier units that can be individually handled, processed, and scaled. Each carrier acts as a discrete module that can be replicated and combined in various configurations, allowing flexible scaling of production capacity without increasing the complexity of individual culture units. This modular segmentation enables parallel processing and efficient resource utilization.
Data Source
AI summary
A cell culture carrier module and a cell culture system having the same are provided. A cell tank and a culture medium module respectively communicate with the carrier module. The carrier module includes a reactor, a first fixer, a second fixer and a plurality of cell culture carriers. The reactor has a chamber and at least one inlet/outlet. The inlet/outlet communicates with the chamber. The first fixer is fixed to the reactor and located in the chamber. The second fixer is disposed in the chamber and is movable relative to the first fixer. Two ends of each cell culture carrier are fixed to the first fixer and the second fixer, respectively. The cell culture carriers are in an untwisted state or a twisted state according to a variation in a distance between the first fixer and the second fixer due to a movement of the second fixer.