Vortex Mixing Chamber for Sterile Cell Culture Media Reconstitution
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Solution Overview
Problem
Current cell culture media reconstitution processes are inefficient, requiring multiple steps, significant handling time, and equipment cleaning, especially for large volumes, and are prone to clumping and contamination due to the hygroscopic nature of powdered media.
Innovation Solution
A mixing apparatus with a fluid chamber, geometric fluid flow aids, and a filter system that facilitates vortex mixing with tangentially oriented influent ports to efficiently reconstitute powdered cell culture media in predetermined unit volumes, minimizing equipment usage and handling while maintaining sterility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If powdered media is reconstituted using traditional multi-step processes with stirring and filtration, then the media can be prepared, but the process requires significant handling time and is prone to contamination
Solution Approach 1:
The patent combines multiple traditional reconstitution steps (mixing, dissolving, filtering) into a single integrated flow mixer device. The powdered media is mixed with water in a controlled environment and filtered through an integrated filter in one continuous operation, eliminating the need for separate stirring and filtration steps.
Solution Approach 2:
The patent introduces a controlled environment (laminar flow hood or closed system) as an intermediary between the powdered media and the external environment. This intermediary protects the hygroscopic powdered media from ambient humidity while allowing controlled water addition and facilitates seamless transition to filtration.
2Volume of stationary object
If powdered media is stored in bulk, then storage space efficiency is improved, but the media absorbs moisture from air and forms clumps
Solution Approach 1:
The patent creates a controlled low-humidity environment (inert atmosphere relative to moisture) during the reconstitution process. The laminar flow hood or closed system maintains this protective environment, preventing moisture absorption by the hygroscopic powdered media until the moment of controlled water addition.
Solution Approach 2:
The patent performs preliminary protective action by establishing the controlled environment before the powdered media is exposed to water. The system is prepared and validated for sterility and humidity control beforehand, ensuring the media remains stable during the entire reconstitution process.
3Reliability
If pre-packaged liquid media is used, then sterility and convenience are improved, but shipping costs and storage requirements increase
Solution Approach 1:
The patent employs a disposable single-use flow mixer that is pre-packaged in a sterile state. This disposable device eliminates the need for cleaning and sterilization of equipment between uses, ensuring sterility while reducing the need for excessive packaging of reusable equipment. The device is used once and then discarded.
Solution Approach 2:
The single-use flow mixer is pre-configured and pre-sterilized during manufacturing. The device performs its own sterilization function through its design (integrated filtration and closed system), eliminating the need for separate sterilization steps by the user and ensuring reliability without requiring complex user preparation.
4Productivity
If geometric flow aids are added to enhance vortex mixing, then mixing efficiency is improved, but device complexity increases
Solution Approach 1:
The patent incorporates geometric flow aids with curved surfaces (such as conical or cylindrical shapes) within the mixing chamber. These curved geometries naturally guide the fluid flow to create vortex patterns, enhancing mixing efficiency without requiring mechanical moving parts or complex control mechanisms.
Solution Approach 2:
The patent uses the hydraulic properties of the fluid flow itself to create the mixing action. By designing the chamber geometry and flow paths appropriately, the kinetic energy of the incoming water stream is converted into vortex motion, eliminating the need for external mechanical stirrers or pumps.
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 simplifies the reconstitution process, reduces handling time, minimizes contamination risks, and improves media shelf life by ensuring thorough mixing and sterility, making it suitable for large-scale cell culture media preparation.
Implementation Method 1
A mixing apparatus with a fluid chamber, geometric fluid flow aids, and a filter system that facilitates vortex mixing with tangentially oriented influent ports
Implementation Method 2
The geometric flow aids are configured to channel the fluid stream around an inner wall of the fluid chamber
Data Source
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AI summary
A mixing apparatus for reconstituting a powdered cell culture media. The apparatus includes at least one fluid chamber, an influent port at a lower portion of the fluid chamber. The apparatus further includes a geometric fluid flow aid positioned in the fluid chamber and an effluent port at the top of the fluid chamber. A powdered cell culture media is provided in the fluid to be mixed with a fluid provided by the influent port. The effluent port is configured to allow reconstituted media to exit the fluid chamber.