Multi-Port Alginate Extruder for High-Density Cell Culture
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Solution Overview
Problem
Existing cell culture technologies face challenges in scaling up and scaling out cell production due to hydrodynamic stress on cells, complexity in maintaining sterility during passaging, and high costs associated with transferring cells between tanks, particularly in stirred tank bioreactors.
Innovation Solution
The development of multi-axial multi-port extruders that produce alginate tubes with high cell densities, which shield cells from hydrodynamic forces, allowing for simultaneous seeding and growth within a smaller reactor, reducing the need for passaging and minimizing contamination risks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If cells are cultured in stirred tank bioreactors, then cell production can be achieved, but hydrodynamic stress damages cells and requires multiple passaging operations
Solution Approach 1:
The system segments the cell culture process into multiple independent microreactors arranged in parallel, each handling a portion of the total cell production. This segmentation allows cells to be cultured in quiescent environments within each microreactor, avoiding the hydrodynamic stress of stirred tanks while maintaining high overall productivity through parallel operation.
Solution Approach 2:
The invention transitions from traditional single-tank stirred culture to a multi-dimensional parallel microreactor array. By distributing cell culture across multiple spatial dimensions (multiple ports and microreactors), the system eliminates the need for mechanical stirring while achieving scalable cell production without hydrodynamic stress.
2Productivity
If cells are transferred between tanks for scaling up, then cell production capacity increases, but contamination risk and operational complexity increase
Solution Approach 1:
The system uses multiple independent microreactors that can be operated in parallel, allowing cell production to be scaled by adding more units rather than transferring cells between tanks. Each microreactor is a self-contained system, eliminating the need for passaging operations and associated contamination risks.
Solution Approach 2:
The system is pre-configured with multiple microreactors ready for parallel operation. Instead of performing passaging operations to scale up production, the system is designed in advance to handle the required production capacity through parallel microreactor arrays, eliminating the need for intermediate transfer steps.
3Productivity
If multiple tank transfers are performed for cell culture scaling, then production capacity increases, but operational costs and time increase
Solution Approach 1:
The system enables continuous cell culture operation across multiple parallel microreactors without interruption for passaging. Cells can be continuously produced and harvested from each microreactor simultaneously, eliminating the downtime associated with transfer operations and maintaining continuous productive action.
Solution Approach 2:
The system is pre-configured with the complete multi-reactor array needed for the desired production capacity. By having all necessary reactors in place and ready for parallel operation from the start, the system eliminates the need for sequential scaling operations that would otherwise require significant time and resources.
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 extruders enable high-density cell cultures with reduced reactor size, lower contamination risk, and significant cost savings by eliminating the need for multiple tank transfers, while maintaining consistent cell growth conditions.
Implementation Method 1
The extruder body defining a plurality of fluid channels, wherein each fluid channel is fluidically coupled with a respective one of the plurality of input ports
Data Source
AI summary
Systems and methods for multi-axial multi-port extruders for producing multiple alginate tubes simultaneously are described. A system embodiment includes, but is not limited to, a plurality of input ports coupled with an extruder body, the extruder body defining a plurality of fluid channels, wherein each fluid channel is fluidically coupled with a respective one of the plurality of input ports, the extruder body further defining a plurality of branch portions including a plurality of branches extending from each fluid channel of the plurality of fluid channels; and a plurality of outlet ports fluidically coupled with the plurality of branches, wherein the number of branches extending from one fluid channel is equal to the number of outlet ports in the plurality of outlet ports to fluidically couple each input port of the plurality of input ports with each outlet port of the plurality of outlet ports.