Free Flow Chromatography Column for Step Elution
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Solution Overview
Problem
Traditional chromatography columns are time-consuming, expensive, and prone to component breakdown during purification due to the need for packed media and continuous gradient elution processes.
Innovation Solution
The use of a chromatography column with free flow binding of components to media, allowing for step elution with complete buffer equilibration and replacement, eliminating the need for rigid columns and associated hardware, and enabling faster purification through optimized binding conditions and optional agitation methods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional packed chromatography columns are used with continuous gradient elution, then purification can be achieved, but the process time is excessive and components break down during purification
Solution Approach 1:
The patent applies periodic action by using step-wise buffer exchange instead of continuous gradient elution. The process involves loading the column with binding buffer, then sequentially exchanging buffers in discrete steps (first buffer exchange, second buffer exchange, etc.) to elute bound components. This periodic, step-wise approach reduces process time while maintaining purification quality by allowing complete buffer equilibration at each step rather than requiring continuous gradual changes.
2Manufacturing precision
If traditional packed chromatography columns are used, then component separation can be achieved, but expensive equipment and high capital investment are required
Solution Approach 1:
The patent employs disposable chromatography columns made from flexible material containing immobilized chromatography media. These single-use columns eliminate the need for expensive, complex traditional chromatography systems with pumps, valves, and control mechanisms. The flexible column can be discarded after one use, removing the need for costly cleaning, sterilization, and maintenance procedures while maintaining effective component separation through the binding and elution process.
3Quantity of substance
If packed chromatography media are used in rigid columns, then binding capacity is achieved, but the process requires complex hardware including pumps and controllers
Solution Approach 1:
The patent implements self-service by using gravity-driven buffer exchange instead of pump-based systems. The flexible chromatography column allows buffers to flow through by gravity alone, eliminating the need for pumps, valves, and electronic controllers. The column structure itself facilitates the binding and elution processes through simple manual manipulation - adding buffers, allowing equilibration, and removing buffers - thereby maintaining binding capacity while removing complex hardware requirements.
4Manufacturing precision
If continuous gradient elution is performed, then separation profile is refined, but the process causes continuous dilution of eluted components
Solution Approach 1:
The patent resolves this contradiction by using periodic, step-wise buffer exchange instead of continuous gradient elution. At each step, a new buffer is added, complete equilibration is allowed, then the entire buffer volume is removed and replaced. This discrete, periodic approach concentrates eluted components in smaller buffer volumes at each step rather than continuously diluting them across a long gradient, thereby maintaining high component concentration while achieving effective separation through the step-wise elution process.
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
This approach reduces manufacturing costs, minimizes capital investment, and enhances purification efficiency by reducing process time and minimizing component breakdown, while allowing for effective separation of target molecules without the need for expensive equipment.
Implementation Method 1
The basic principle of chromatography involves a binding or association between a component and the media; these interactions can be ionic, polar, hydrophobic, specific molecular or physical capture.
Implementation Method 2
Once a chromatography media has been saturated with the components, it is eluted using buffers of different pH or electrolyte level to break the binding
Implementation Method 3
it is eluted using buffers of different pH or electrolyte level to break the binding and the eluent collected containing a higher concentration of the components
Data Source
AI summary
A chromatography column that captures components in a process liquid in a free flow state and allows elution in steps is described.