Spiral Fixed-Bed Bioreactor for High-Density, Homogeneous Cell Growth
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Solution Overview
Problem
Existing bioreactors are difficult to transport and adapt to various sizes or configurations, limiting their use in remote locations and diverse applications, and they struggle to maximize cell density and scalability while maintaining consistent cell growth.
Innovation Solution
A modular bioreactor design featuring structured fixed beds, such as spiral beds, with modular components that allow for easy assembly and adaptation, enabling high-density cell growth and consistent culture outcomes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional bioreactor design is used, then cell culturing can be performed, but the bioreactor is difficult to transport and adapt to various sizes or configurations
Solution Approach 1:
The bioreactor is divided into modular components including a base unit, intermediate parts, and cover portions that can be assembled and disassembled. The fixed bed is segmented into multiple sections that can be independently configured. This segmentation enables easy transportation and adaptation to various sizes while maintaining functional integrity.
Solution Approach 2:
The bioreactor design incorporates adjustable and reconfigurable components that allow dynamic adaptation to different operational requirements. The modular structure enables the system to be reconfigured for different volumes and configurations based on specific culturing needs.
2Productivity
If conventional bioreactors are used, then cell culture can be maintained, but they struggle to maximize cell density and scalability
Solution Approach 1:
The structured fixed bed provides optimized local structures that enhance mass transfer and nutrient distribution throughout the culture volume. The spiral or helical structures create localized flow patterns that improve oxygen and nutrient delivery to cells, maximizing cell density while maintaining consistent growth conditions.
Solution Approach 2:
The bioreactor enables optimization of critical parameters including residence time, flow rate, and mixing intensity to maximize cell density. The structured fixed bed geometry allows for precise control of fluid dynamics and mass transfer coefficients, ensuring consistent cell growth across different scales.
3Volume of stationary object
If the bioreactor is scaled up in volume, then more cells can be cultured, but homogeneity and repeatability of results deteriorate
Solution Approach 1:
The fixed bed is divided into multiple segmented sections that maintain uniform flow distribution even at large scales. This segmentation ensures that nutrients and oxygen are evenly distributed throughout the entire volume, preserving homogeneity and repeatability while enabling high-volume production.
Solution Approach 2:
The spiral or helical structured fixed bed introduces a three-dimensional configuration that enhances mass transfer pathways. This dimensional arrangement creates multiple flow paths and increases surface area for exchange, maintaining homogeneity across large volumes by distributing fluid flow more effectively throughout the culture medium.
Data Source
AI summary
An apparatus for culturing cells includes a bioreactor. The bioreactor may be modular and may include in a chamber a fixed bed, such as an unstructured or structured fixed bed (such as a spiral bed) for culturing cells, with a return column arranged centrally within the chamber. The modular bioreactor may include a plurality of structured fixed bed arranged in a stacked configuration. The modular bioreactor may include an outer casing forming a space for conditioning (e.g., insulating, heating, cooling) at least a chamber in which cells are cultured. The bioreactor may also include an impeller with radially curved blades, and may also suspend the impeller so that it may move from side-to-side and align with an external drive. Related methods are also disclosed.