Cell Culture Flask Gas Collection Area for Bubble Isolation
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Solution Overview
Problem
In cell culture flasks, residual air or gas bubbles hinder cell growth by occupying space and impeding gas exchange, especially when the flask is tilted from a vertical to a horizontal position, and existing solutions either allow contamination or fail to effectively trap extraneous gases.
Innovation Solution
A cell culture flask design incorporating a gas collection area within the internal volume, which traps extraneous gas or bubbles when the flask is tilted from a vertical to a horizontal position, using a flange or projection in the tapered neck portion to isolate gases from the cell growth area, allowing for efficient nutrient exchange and preventing contamination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the flask is completely filled with media to eliminate head space, then gas exchange is improved, but residual air bubbles remain at the top causing contamination
Solution Approach 1:
The flask is segmented into two functional zones: a cell growth area and a gas collection area. The gas collection area is separated from the cell growth area by a barrier structure, allowing residual air bubbles to be isolated in the gas collection area while the cell growth area remains free of contamination. This segmentation enables complete filling of the flask with media while preventing air bubbles from contacting the cells.
2Area of stationary object
If the flask is tilted to allow cells to grow on internal surfaces, then surface area for cell growth is increased, but residual air enters between surface layers impeding cellular growth
Solution Approach 1:
The harmful air bubbles are extracted and removed from the cell growth environment by directing them into a dedicated gas collection area. The barrier structure prevents air from entering the spaces between cell culture layers, allowing the flask to be tilted for enhanced surface area utilization without compromising cell growth.
3Object-affected harmful factors
If a bubble trap structure is added to prevent air intrusion, then contamination is prevented, but device complexity increases
Solution Approach 1:
The gas collection area is merged with the existing flask structure, utilizing the flask's internal volume efficiently. The barrier structure is integrated into the flask wall, creating a unified design that prevents air intrusion without requiring separate external components or complex assembly procedures.
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 solution effectively prevents extraneous gases from entering the cell growth area, ensuring uninterrupted gas exchange and promoting healthy cell growth, even during manipulation and rotation of the flask, while maintaining a contamination-free environment.
Implementation Method 1
when the internal volume is substantially filled with a liquid or aqueous mixture, and tilted, the gas collection area traps the extraneous gas or bubbles
Data Source
AI summary
A device for trapping extraneous gas or bubbles is disclosed. The device is defined as having a gas collection area in a tapered neck portion such that when used as a cell culturing apparatus, extraneous gas or bubbles are trapped and isolated from the cell growth areas where cells or media reside.