Single-Use Polymeric Spray Drying Chamber for Cross-Contamination Prevention
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Solution Overview
Problem
The pharmaceutical industry faces challenges in manufacturing diverse medicines, particularly small-volume, highly potent compounds, due to the complexity, cost, and time required for spray drying processes, which are often inflexible and prone to contamination, necessitating improvements in operational flexibility and efficiency.
Innovation Solution
The use of single-use spray drying components, such as polymeric material-based drying chambers, which are pre-sterilized and easily replaceable, reducing the risk of contamination and eliminating the need for extensive sterilization procedures, while allowing for flexible operation and efficient processing of various compounds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional spray drying equipment is used with extensive sterilization procedures, then sterile conditions are achieved, but operational flexibility is reduced and batch cycle times increase
Solution Approach 1:
The patent employs single-use spray drying chambers made from polymeric materials that are pre-sterilized and disposed of after one use. This eliminates the need for extensive sterilization procedures between batches, significantly reducing batch cycle times while maintaining sterile conditions. The disposable nature of the chamber allows for rapid replacement without complex cleaning or validation processes.
Solution Approach 2:
The spray drying chambers are pre-sterilized during manufacturing before being shipped to the facility. This preliminary sterilization action eliminates the need for time-consuming on-site sterilization procedures, allowing batches to start immediately while ensuring sterile conditions are already established.
2Manufacturing precision
If specialized processing equipment and containment technologies are used, then manufacturing precision is improved, but device complexity increases and operational flexibility decreases
Solution Approach 1:
By using disposable polymeric spray drying chambers, the system eliminates the need for complex, specialized stainless steel equipment with multiple sterilization systems, validation mechanisms, and containment technologies. The single-use chamber provides sufficient manufacturing precision for its intended purpose without the added complexity of reusable specialized equipment.
Solution Approach 2:
The patent changes the material parameter from traditional stainless steel to polymeric materials, which fundamentally alters the equipment characteristics. This material change enables single-use configuration, reducing device complexity while maintaining adequate manufacturing precision through the inherent properties of the polymeric chamber design.
3Reliability
If extensive cleaning protocols and procedures are implemented, then cross-contamination risk is reduced, but operational costs and time investment increase
Solution Approach 1:
The single-use spray drying chamber eliminates cross-contamination risk by design - each chamber is used once and then discarded, making cleaning protocols entirely unnecessary. This disposable approach prevents cross-contamination between batches without any time investment in cleaning procedures.
Solution Approach 2:
The patent extracts the cleaning function entirely from the process by using a disposable chamber that is discarded after one use. Instead of cleaning the chamber between batches, the entire chamber is removed and replaced with a new pre-sterilized one, eliminating the need for cleaning protocols and associated time investments.
4Ease of manufacture
If reusable spray drying chambers are used with multiple uses, then operational costs are reduced, but contamination risk and cleaning requirements increase
Solution Approach 1:
The patent accepts the trade-off of using disposable chambers instead of reusable ones. While the chamber itself is inexpensive and single-use, this approach eliminates contamination risk and cleaning requirements, which would be more costly and time-consuming for reusable chambers. The overall operational cost is optimized by eliminating validation, cleaning, and maintenance expenses associated with reusable equipment.
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 significantly reduces the risk of cross-contamination, decreases batch cycle times, and lowers operational costs by enabling sterile conditions without complex sterilization, facilitating the production of shelf-stable dry powder formulations for diverse medicines.
Implementation Method 1
A drying gas can be introduced through the gas passageway and out the gas outlet into the single-use drying chamber to at least partially dry the plurality of droplets and form a plurality of spray-dried particles
Data Source
AI summary
Spray drying method and systems are disclosed that include one or more single-use components. Single-use spray drying systems can include a drying chamber with an inner surface formed of a polymeric material. The single-use components can be pre-sterilized and sterile packaged to provide improved efficiencies and greater operational flexibility in spray drying systems.