Multilayer Cell Culture Vessels with Tracheal Gas Exchange
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Solution Overview
Problem
Conventional cell culture flasks have limited gas exchange capabilities due to oxygen utilization, restricting cell growth and efficiency, especially in high-throughput screening applications where large, uniform cell quantities are needed.
Innovation Solution
A multilayer cell growth apparatus with stacked chambers separated by tracheal spaces and connected by unitary columns, allowing for enhanced gas exchange and secure assembly to prevent leaks under pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple cell growth chambers are stacked within a unitary flask body to increase cell growth surface area, then productivity is improved, but device complexity increases
Solution Approach 1:
Multiple cell growth chambers are nested within a single unitary flask body, with each chamber containing a culture medium and stacked vertically. This nesting arrangement allows multiple independent culture environments to coexist within one container, significantly increasing the total cell growth surface area while maintaining a compact form factor suitable for standard incubator spaces.
Solution Approach 2:
The invention transitions from a conventional single-layer horizontal culture arrangement to a multi-layer vertical stacking configuration. By utilizing the vertical dimension within the flask body, the system multiplies the available culture surface area without increasing the flask's footprint, effectively adding spatial dimensions to the culture capacity.
2Ease of manufacture
If press fit columns are used to hold stacked chambers together, then ease of manufacture is improved, but reliability deteriorates under pressure
Solution Approach 1:
A seal member is introduced as an intermediary element between the press fit column and the chamber walls. This seal member prevents direct contact between the column and chamber surfaces, eliminating leak paths while maintaining the mechanical holding function. The seal member acts as a mediator that preserves both the ease of assembly and the reliability under pressure.
Solution Approach 2:
The seal member is implemented as a flexible ring or O-ring that can deform to conform to slight variations in chamber dimensions. This flexibility allows the seal to maintain effective contact and prevent leaks even when manufacturing tolerances vary, while the press fit column provides the necessary mechanical retention force.
3Ease of manufacture
If welds and press fit features are used to assemble chambers, then ease of manufacture is improved, but stability deteriorates when pressure builds
Solution Approach 1:
The seal member is installed beforehand to cushion and protect the interface between chambers before pressure builds during cell culture. This preventive measure ensures that when pressure differential develops during use, the seal member absorbs and distributes the stress, preventing separation of the chamber assembly while maintaining the simple press-fit construction.
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 apparatus enables increased cell growth surface area and uniform gas distribution, supporting larger cell quantities with improved stability and leak resistance under pressure, enhancing cell culture efficiency and consistency.
Implementation Method 1
Oxygen and carbon dioxide are of particular importance to the culturing of cells. The supply of oxygen for cellular respiration and metabolic function in conventional cell culture containers occupies the head space of the container
Implementation Method 2
The stacked chambers are held in position by unitary connecting columns that run through each cell growth chamber and terminate at the rigid upper and lower surfaces. In one embodiment, the cell growth chambers are separated by tracheal spaces that allow air from the external environment to contact a growth surface of each cell growth chamber.
Data Source
AI summary
A multilayered cell culture apparatus for the culturing of cells is disclosed. The cell culture apparatus includes a unitary flask body including a rigid upper and lower surface, connected by side walls. The cell growth apparatus comprises multiple cell growth chambers stacked in vertical alignment and orientation within the unitary flask body. The stacked chambers are held in position by unitary connecting columns that run through each cell growth chamber and terminate at the rigid upper and lower surfaces of the apparatus. The cell growth chambers are separated by tracheal spaces that allow air from the external environment to contact the cell growth surface of each individual cell growth chamber.