Rockable Biocontainer Multi-Axis Mixing
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Solution Overview
Problem
Existing bioreactors face challenges in efficiently mixing oxygen, pH, and substrates while minimizing damage to cells, particularly in large volume cell cultures, where conventional systems often result in uneven distribution and cell stress.
Innovation Solution
A biocontainer with a substantially rectangular cuboid form and releasably engageable brackets is used, allowing for rocking along multiple axes to enhance mixing while maintaining container shape and minimizing stress, combined with a rockable platform for efficient distribution of nutrients and gases.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional bioreactors are used for large volume cell cultures, then processing capacity is sufficient, but mixing efficiency is poor and cell damage increases
Solution Approach 1:
The biocontainer is designed to be rockable about two perpendicular horizontal axes, transforming the static container into a dynamic system that actively mixes cell culture media through controlled rocking motions, thereby improving mixing efficiency without compromising processing capacity
Solution Approach 2:
The invention introduces multi-axis rocking capability (two perpendicular horizontal axes) to the conventional single-axis or static bioreactor systems, adding dimensional complexity to the mixing mechanism that enhances fluid circulation and reduces cell damage through gentler, more uniform mixing patterns
2Quantity of substance
If conventional bioreactors are used for cell culture, then large volume processing is achieved, but pH control and oxygen distribution become uneven
Solution Approach 1:
The rockable biocontainer design creates dynamic fluid circulation patterns through multi-axis rocking, ensuring uniform distribution of pH buffers and oxygen throughout large volumes of cell culture media, eliminating the uneven gradients that occur in static or single-axis systems
Solution Approach 2:
The system incorporates sensors and control mechanisms that monitor pH and oxygen levels during rocking operations, using feedback signals to adjust rocking parameters in real-time to maintain uniform distribution across the entire culture volume
3Productivity
If conventional bioreactors are used, then processing capability is maintained, but cell stress and damage increase
Solution Approach 1:
The controlled multi-axis rocking motion provides gentle, dynamic mixing that reduces cell stress compared to vigorous stirring in conventional bioreactors, maintaining processing capability while minimizing mechanical damage to sensitive cells
Solution Approach 2:
The system optimizes rocking parameters (amplitude, frequency, duration) to achieve effective mixing and distribution while keeping mechanical stresses below thresholds that cause cell damage, demonstrating parameter optimization to balance productivity and cell integrity
4Ease of operation
If single-use bioreactor bags are used, then ease of operation is improved, but mixing efficiency remains insufficient
Solution Approach 1:
The single-use biocontainer is designed with integrated rockable features and bracket engagement mechanisms that enable efficient multi-axis rocking mixing, proving that disposable containers can achieve mixing performance previously only available in complex reusable systems while maintaining ease of operation
Data Source
Figure 1A
Figure 1B
Figure 2
AI summary
Biocontainers, as well as methods and platforms for rocking the biocontainers, are disclosed.