Monoclonal Antibody Purification Using Modular In-Line Mixing Units
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Solution Overview
Problem
Existing monoclonal antibody purification processes require bulky apparatus, extensive infrastructure, complex operation, high operator error risk, and diverse spare parts, complicating maintenance and increasing costs.
Innovation Solution
A simplified apparatus with standardized processing units arranged in series, each performing a distinct operation, using identical components and in-line mixing to minimize operator error and spare parts, and enabling easier maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple different processing units are used for different purification operations, then each operation can be performed with specialized equipment, but the apparatus becomes bulky, requires extensive floor space, and increases device complexity
Solution Approach 1:
The patent applies universality by designing a single processing unit that can perform multiple different purification operations (chromatography, filtration, concentration) through interchangeable modules. Instead of requiring separate specialized equipment for each operation, one processing unit can be configured with different modules to execute various unit operations, thereby reducing overall apparatus complexity and space requirements while maintaining purification effectiveness
Solution Approach 2:
The patent segments the purification system into modular functional units, where each processing unit is divided into separate modules (e.g., chromatography module, filtration module, concentration module) that can be independently selected and assembled. This segmentation allows the system to be configured for specific purification needs without requiring complete sets of different processing units, reducing device complexity while preserving specialized functionality
2Reliability
If multiple different processing units are used for different operations, then specialized functions are achieved, but operator training requirements increase and ease of operation decreases
Solution Approach 1:
By using a universal processing unit design that can perform multiple operations through module interchange, operators need to be trained on only one type of processing unit rather than multiple different types. The standardized interface and control system across all modules reduce training requirements and simplify operations while maintaining process reliability through proven functionality
3Reliability
If diverse processing units are used for different operations, then specialized processing capabilities are achieved, but maintenance complexity increases and ease of repair decreases
Solution Approach 1:
The universal processing unit design means that maintenance personnel need to learn to service only one type of processing unit rather than multiple different types. The standardized components, interfaces, and module architectures across all purification operations reduce maintenance complexity and simplify repair procedures while preserving specialized processing capabilities through modular interchange
4Reliability
If multiple different processing units are used, then a large inventory of spare parts is required, but this increases cost and loss of substance
Solution Approach 1:
With a universal processing unit design where modules are interchangeable across different purification operations, a single inventory of spare parts and modules can service multiple processing units. Instead of maintaining separate spare parts inventories for each type of processing unit, the standardized module design allows one set of spare modules to replace failures in any processing unit, reducing inventory requirements and associated costs
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 process offers simplified operation, reduced operator error, lower inventory needs, and easier maintenance, while maintaining high purification efficiency.
Implementation Method 1
mixing the liquid feedstock and the bioprocessing liquids to form a mixed stream
Implementation Method 2
device (iv) for performing chromatographic purification of the monoclonal antibody from the liquid feedstock
Implementation Method 3
device (iv) for concentrating the monoclonal antibody from the liquid feedstock
Data Source
Figure 1
Figure 2
AI summary
A process for purifying a liquid feedstock comprising a monoclonal antibody and impurities, the process comprising passing the liquid feedstock through an apparatus comprising at least two processing units, each such unit producing a product stream containing purified monoclonal antibody and optionally a waste stream comprising at least some of the impurities, wherein each unit comprises specified components (i) to (v) which include a multiple inlet flow-controller comprising two or more variable flow inlet valves for in situ production of a bioprocessing liquid by combining at least two liquids in a desired ratio. One of the units performs chromatography and another performs viral inactivation. The units may be essentially the same except for a device they contain, leading to advantages in terms of simplicity, cost and ease of operation, lower risk of operator error, easier maintenance and lower inventory of spare parts.