Multi-Chamber Bioreactor Assembly for 3D Tissue Co-Culture
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Solution Overview
Problem
Existing bioreactors face challenges in media transfer and environmental control, particularly when producing complex three-dimensional tissue constructs, which can impact tissue growth and integrity, and lack efficient methods for co-culturing different cell types to form multi-phasic tissue constructs.
Innovation Solution
A bioreactor with multiple tissue culture sides, ports, and a perfusion system that facilitates improved media transfer and environmental control, allowing for the independent growth of cells and co-culture of multi-phasic tissue constructs, including transparent and modular design, and a port system for precise media and gas management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a bioreactor uses a single tissue culture chamber, then the device complexity is low, but the productivity and production capacity are limited
Solution Approach 1:
The bioreactor is divided into multiple independent tissue culture chambers (first tissue culture chamber, second tissue culture chamber, third tissue culture chamber) that can be stacked vertically. Each chamber can independently culture different cell types or tissue constructs, thereby increasing production capacity without requiring a single large complex system. The segmented design allows parallel processing of multiple tissue cultures simultaneously.
Solution Approach 2:
The bioreactor transitions from a horizontal single-chamber design to a vertical multi-chamber stacked configuration. By utilizing the vertical dimension, the system accommodates multiple tissue culture chambers in a compact footprint, increasing production capacity while maintaining manageable device complexity through modular vertical stacking rather than horizontal expansion.
2Manufacturing precision
If the bioreactor uses multiple ports for media and gas management, then the environmental control precision is improved, but the device complexity increases
Solution Approach 1:
The ports are designed with multi-functionality to reduce overall device complexity. For example, certain ports can serve dual purposes as both media inlet and gas outlet depending on the operational mode, or can be used for different chamber types (e.g., seeding port vs. feeding port). This universal design allows precise environmental control through multiple dedicated connections while minimizing the total number of unique port types and associated tubing configurations.
Solution Approach 2:
The manifold system acts as an intermediary component that consolidates multiple port connections. Instead of requiring separate tubing runs from external reservoirs to each individual port, the manifold distributes media and gases to multiple chambers through centralized connection points, thereby reducing the complexity of external connections while maintaining precise control over each chamber's environment.
3Ease of operation
If the bioreactor uses transparent tissue culture sides, then the ease of operation for monitoring is improved, but the strength and structural integrity may be reduced
Solution Approach 1:
The bioreactor employs transparent plastic sides that function as thin-walled containment structures. These transparent walls provide sufficient structural integrity to maintain the sealed environment and withstand operating pressures while allowing optical transparency for monitoring tissue culture growth. The design optimizes wall thickness and material properties to balance transparency for observation with adequate mechanical strength.
Solution Approach 2:
The bioreactor construction likely utilizes composite material approaches, combining transparent plastic walls with reinforcing structural elements (such as opaque end caps, internal support ribs, or metal fittings at connection points). This composite design maintains transparency where monitoring is needed while providing enhanced structural integrity at critical stress points and connection areas.
4Manufacturing precision
If the bioreactor enables co-culture of multiple cell types, then the manufacturing precision of multi-phasic tissue constructs is improved, but the device complexity increases
Solution Approach 1:
The bioreactor is segmented into multiple specialized chambers, each optimized for culturing specific cell types or tissue layers. For example, one chamber may be dedicated to osteogenic differentiation while another supports chondrogenic cultures. This segmentation allows precise control over the microenvironment of each cell type, ensuring consistent multi-phasic tissue construct formation while managing complexity through modular chamber design that can be independently optimized.
Solution Approach 2:
Different chambers or regions within the bioreactor are designed with local quality variations tailored to specific tissue culture requirements. This includes varying oxygen permeability, media flow rates, or structural support characteristics in different chambers to match the specific needs of different cell types. Such localized optimization enables precise control over multi-cell type co-culture while maintaining a relatively simple overall device architecture through standardized modular components.
Data Source
AI summary
A bioreactor capable of producing complex, three-dimensional tissue constructs has improved media transfer and increased controllability with regard to exposure to the external environment. The bioreactor includes an external surface, a first tissue culture side for culturing a first cell source in a first tissue culture support region, a second tissue culture side for culturing a second cell source in a second tissue culture support region, and a plurality of ports. At least one of the ports of the plurality of ports extend from the first tissue culture support region of the first tissue culture side to the external surface. The plurality of ports can include an external port that is configured to be a liquid inlet when the bioreactor is in a first orientation and a gas outlet when the bioreactor is in a second orientation.