Delayed Release Solid Formulation Lipid Spraying Process
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Solution Overview
Problem
Current methods for preparing delayed release oral formulations result in non-homogeneous lipid distribution and require excessive amounts of lipophilic substances, leading to inefficiencies in controlled release and increased lipid load.
Innovation Solution
A process involving the controlled melting and spraying of lipids onto active ingredient powders under stirring, followed by cooling and optional granulation, to achieve a more uniform and reproducible dispersion, reducing the amount of lipophilic substances needed while maintaining extended release conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If lipophilic substances are added by melting or direct mixing to active ingredients, then delayed release effect is achieved, but the distribution of lipid on the surface is non-homogeneous and random
Solution Approach 1:
The lipid is melted and sprayed onto the active ingredient particles before mixing with other formulation components. This preliminary coating action ensures uniform lipid distribution on particle surfaces before the granulation process, resolving the non-homogeneous distribution problem while maintaining delayed release effectiveness.
Solution Approach 2:
The patent uses a spray system to atomize and distribute melted lipid onto active ingredient particles. This hydraulic/pneumatic approach provides controlled, uniform coverage compared to direct mixing, achieving both homogeneous distribution and reliable delayed release effect.
2Manufacturing precision
If greater amount of lipids is used to increase the probability of full coating, then coating coverage is improved, but lipid load in final formulation increases
Solution Approach 1:
By spraying melted lipid onto active ingredient particles before granulation, the coating process is more efficient. This preliminary action ensures complete coverage with optimal lipid amounts, avoiding the need to use excessive lipid to achieve full coating, thus reducing lipid load while maintaining coating quality.
Solution Approach 2:
The spray system delivers lipid in a controlled, atomized manner that ensures efficient coverage. This method achieves full coating probability with optimized lipid quantity, reducing waste and lipid load compared to random mixing approaches that require excess lipid.
3Ease of manufacture
If random mixing process is used for lipid and active ingredient, then process simplicity is maintained, but distribution homogeneity deteriorates
Solution Approach 1:
The lipid is sprayed onto active ingredient particles as a preliminary step before granulation and tablet compression. This structured preliminary action maintains process simplicity while dramatically improving distribution homogeneity compared to random mixing throughout the entire process.
Solution Approach 2:
Replacing random mechanical mixing with a spray-based distribution system maintains operational simplicity while achieving superior homogeneity. The spray process is easily controlled and integrated into the manufacturing sequence without complex additional equipment.
4Manufacturing precision
If film coating operation is performed in isolated rooms with special equipment, then coating quality is improved, but device complexity and infrastructure requirements increase
Solution Approach 1:
The lipid coating step is merged with the existing granulation process. By spraying melted lipid onto particles during or before granulation in standard equipment, the patent achieves coating quality without requiring separate isolated rooms or specialized coating infrastructure, thus reducing device complexity.
Solution Approach 2:
Using a spray system integrated into the granulation process achieves film-like coating quality without requiring traditional film coating equipment or isolated environments. This hydraulic approach simplifies infrastructure while maintaining coating effectiveness.
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 process ensures a more uniform distribution of lipids, reduces lipid load, and decreases mixing and cooling times, resulting in improved homogeneity and controlled release of active ingredients with reduced exothermic reactions.
Implementation Method 1
a) melting at least one lipid
Implementation Method 2
b) spraying said at least one melted lipid on at least one active ingredient in the form of a moving powder
Implementation Method 3
c) cooling the resulting mixture
Data Source
AI summary
A process for the preparation of oral delayed release solid formulations and the formulations obtainable from said process are now described. Said process comprises the following steps: a) melting at least one lipid; b) spraying said at least one melted lipid on at least one active ingredient in the form of a moving powder; c) cooling the resulting mixture; d) optional granulation of the mixture; e) optional compression of the mixture.