Modular Bioreactor Control for Variable Culture Vessels
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Solution Overview
Problem
Current bioreactor systems lack flexibility in accommodating varying sizes and shapes of culture vessels, inconsistent control of bioreactor processes, and inadequate communication with other manufacturing line components, leading to inefficiencies in cell expansion, decellularization, and recellularization processes.
Innovation Solution
A modular bioreactor system with integrated programmable logic controllers (PLCs) that allows for variable vessel sizes, customizable pump and valve configurations, and real-time communication with other manufacturing line components, enabling simultaneous control of multiple bioreactors for consistent and scalable cell culture processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed-configuration bioreactor system is used, then the system structure is simple, but it cannot accommodate varying sizes and shapes of culture vessels
Solution Approach 1:
The bioreactor system is divided into modular components including culture vessels of different sizes (1L, 5L, 10L, 20L, 50L), pump modules, valve modules, and control modules. Each module can be independently configured and assembled to match specific process requirements, enabling the system to adapt to varying vessel sizes and shapes without requiring complete system redesign.
Solution Approach 2:
The system employs dynamically configurable pump and valve arrangements that can be adjusted based on the specific culture vessel being used. The controller can modify operational parameters and component configurations in real-time to optimize performance for different vessel types, transitioning from static to dynamic adaptation.
2Reliability
If centralized control is used for multiple bioreactors, then the control system is simplified, but process consistency across different bioreactors cannot be maintained
Solution Approach 1:
Each bioreactor is equipped with its own dedicated controller that maintains independent control over local processes while communicating with the central system. This allows each bioreactor to be optimized for its specific process requirements while maintaining overall system coordination, ensuring process consistency across different vessel types and sizes.
Solution Approach 2:
The control system incorporates feedback mechanisms where sensors monitor process parameters (temperature, pH, dissolved oxygen, agitation speed) in each bioreactor and feed this information back to the controllers. The controllers automatically adjust operational parameters to maintain setpoints, ensuring consistent process conditions across multiple bioreactors despite differences in scale and configuration.
3Loss of information
If standard communication protocols are not implemented, then the system integration is simpler, but communication with manufacturing line components is inadequate
Solution Approach 1:
The bioreactor control system is designed with universal communication capabilities that can interface with multiple types of manufacturing line components (cell thaw systems, tissue maintenance systems, upstream/downstream processing equipment). The system can adapt to different communication protocols and data formats, enabling seamless integration across the entire manufacturing line without requiring separate dedicated communication systems for each component type.
4Productivity
If large dead volumes are present in the system, then the system capacity is increased, but production efficiency is reduced
Solution Approach 1:
The system design extracts and eliminates unnecessary dead volumes from the fluid paths by optimizing tubing routing, minimizing reservoir sizes to only what is functionally required, and designing efficient media delivery and waste removal systems. This reduces the amount of media and cells trapped in dead zones, improving overall production efficiency and reducing material loss.
Data Source
AI summary
A configurable system for repeatably performing processes related to tissue growth in a controlled environment, possibly part of an industrial production line. The system can accommodate various sizes and shapes of culture vessels, and can maintain the cells at a desired temperature in the culture vessels, thus enabling a plug and play system that can produce consistent and repeatable results. The system includes gas management, fluid management, and control of multiple processes simultaneously, and can be automatically operably coupled with a variety of supporting technologies that can enable tissue-related processes. The system can communicate with supporting technologies upstream and downstream on a manufacturing line, enabling fully automated process control, centralized data historization, and centralized control.