Viral Vaccine Drying via Pulsed Combustion Gas Stream
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Solution Overview
Problem
Current methods for producing dried viral vaccines are inefficient, time-consuming, and costly, often requiring batch processing and resulting in reduced efficacy and shelf life, making it challenging to produce and store vaccines on a large scale.
Innovation Solution
The use of a high-temperature gas stream, specifically a pulsed combustion process, to dry viral vaccines, which retains viability and antigenic properties, allowing for faster and more efficient production with larger batch sizes and extended shelf life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If freeze drying is used to dehydrate viral vaccines, then shelf life is extended, but production time increases and efficiency decreases
Solution Approach 1:
The invention changes the drying parameters by using high temperature (up to 150°C or higher) and low humidity conditions instead of traditional freeze drying temperatures. This parameter change enables rapid drying while maintaining vaccine stability through the use of protective carriers and controlled atmospheric conditions, achieving both extended shelf life and reduced production time
Solution Approach 2:
The drying process uses periodic cycles of high temperature exposure followed by cooling and humidity control. This periodic action allows the vaccine to be rapidly dehydrated while preventing thermal damage, achieving efficient water removal without compromising vaccine viability or extending shelf life
2Adaptability or versatility
If batch processing is used for viral vaccine production, then production flexibility is maintained, but productivity decreases
Solution Approach 1:
The invention merges multiple batch processing steps into a single integrated continuous process. The liquid vaccine feed is continuously introduced into the drying chamber where it undergoes rapid dehydration in a continuous stream, eliminating the need for separate freezing, drying, and packaging steps. This integration maintains flexibility while dramatically improving productivity
Solution Approach 2:
The drying process operates continuously with liquid vaccine feed being constantly introduced and dried product being continuously removed. This continuous operation eliminates idle time between batches and maximizes equipment utilization, achieving high productivity while maintaining the ability to adjust to different production requirements
3Stability of the object's composition
If traditional drying methods are used, then vaccine stability is maintained, but production cost increases
Solution Approach 1:
The invention replaces complex mechanical freeze drying systems with a simpler thermal drying system using heated air or gas streams. This substitution eliminates the need for vacuum chambers and freezing mechanisms, reducing equipment complexity and manufacturing costs while achieving equivalent or superior vaccine stability through controlled thermal processing
Solution Approach 2:
By changing the drying parameters to use moderate temperatures (up to 150°C) with short exposure times and protective carriers, the invention achieves vaccine stability without requiring expensive freeze drying equipment. The parameter optimization allows simple, cost-effective drying systems to produce stable vaccine products
4Speed
If high temperature drying is used, then production speed increases, but vaccine viability may decrease
Solution Approach 1:
The drying process uses periodic cycles of high temperature exposure followed by cooling and humidity control. This periodic action allows the vaccine to be rapidly dehydrated while preventing thermal damage, achieving efficient water removal without compromising vaccine viability
Solution Approach 2:
Protective carriers and excipients are introduced as intermediaries to shield the vaccine antigens from thermal damage during high temperature drying. These carriers form protective matrices that maintain vaccine structure and viability even under elevated temperature conditions, enabling fast drying without losing reliability
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 method enables the production of dried viral vaccines with high viability and antigenic potency, maintaining effectiveness for over 12 months, while reducing production time and costs by enabling continuous processing and improved storage stability.
Implementation Method 1
The liquid medium is vaporized by a heated and/or pulsed gas stream to dry the viral vaccine and retain the ability of the viral particles to elicit an immunogenic response
Data Source
AI summary
A viral vaccine in the dried state is described. Methods for drying viral vaccine in the liquid state into viral vaccine in the dried state are presented. The methods may include introducing the viral vaccine in the liquid state into a gas stream and recovering viral vaccine in the dried state from the gas stream.