Drug Particle Coating Control to Minimize Storage Agglomeration
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Solution Overview
Problem
Conventional methods for coating active pharmaceutical ingredients (API) particles result in agglomeration of excess coating material during storage, leading to increased disintegration times and decreased dissolution rates, which destabilizes pharmaceutical products and shortens their shelf life.
Innovation Solution
A process involving sieving coated API particles to remove excess coating material, optimizing coating and dosing ratios, and applying mechanical stress to deform coating materials, followed by embedding silica, to form a stable pharmaceutical composition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional coating methods are used to coat API particles, then coating material is applied to mask taste and control dissolution, but excess coating material agglomerates during storage causing increased disintegration time
Solution Approach 1:
The patent applies the extraction principle by removing excess coating material from the coated API particles through classification processes. This extraction of unwanted excess material prevents agglomeration during storage and maintains stable disintegration times, directly resolving the contradiction between coating effectiveness and compositional stability.
Solution Approach 2:
The patent implements preliminary action by performing classification and removal of excess coating material during the manufacturing process before the product reaches storage conditions. This advance preparation prevents agglomeration from occurring during storage, maintaining both coating functionality and compositional stability throughout the product shelf life.
2Reliability
If excess coating material is present after coating, then coating function is maintained, but agglomeration occurs during storage increasing disintegration time
Solution Approach 1:
The patent removes the harmful excess coating material through classification processes, extracting it from the coated particle system. This elimination of the harmful factor (excess coating material that causes agglomeration) while retaining the necessary coating function on API particles, thereby resolving the contradiction between maintaining coating functionality and preventing agglomeration-related disintegration time increases.
Solution Approach 2:
The patent converts the potentially harmful excess coating material into a beneficial controlled-release mechanism. By carefully controlling the amount of coating material through classification, the patent ensures sufficient coating for taste masking and dissolution control while preventing excessive amounts that would cause agglomeration and delay disintegration, thus transforming a potential harm into an optimized benefit.
3Reliability
If coating material is applied to control dissolution rate, then API release is regulated, but excess material destabilizes product over time
Solution Approach 1:
The patent extracts excess coating material through classification processes, removing the component that causes product destabilization over time. This extraction preserves the necessary dissolution control function while eliminating the harmful excess material that would otherwise shorten shelf life, thereby resolving the contradiction between dissolution rate control and long-term product stability.
Solution Approach 2:
The patent applies parameter changes by optimizing the coating material quantity through classification processes. This parameter optimization ensures sufficient coating for controlled dissolution while preventing excessive amounts that cause agglomeration and product destabilization during storage, thereby extending shelf life while maintaining dissolution rate control.
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
Minimizes agglomeration of coating material, maintaining consistent disintegration and dissolution rates, thereby stabilizing the pharmaceutical product and extending its shelf life under various storage conditions.
Implementation Method 1
applying mechanical stress to deform coating materials, followed by embedding silica
Data Source
AI summary
Provided are pharmaceutical compositions and methods for preparing pharmaceutical compositions using solventless mixing methods. Excess coating material that is not bound to a coated API particle may be removed by a sieving process. Coating and dosing ratios can also be optimized to minimize the amount of excess unbound coating material. Specifically, a coating ratio and/or a dosing ratio can be used to minimize the residual amount of excess unbound coating material to minimize agglomeration of coating material during storage. In some embodiments, a pharmaceutical composition is provided, the pharmaceutical composition comprising: 65-85% w/w API particles; 15-30% w/w coating material coating the API particles; and 3-15% w/w matrix surrounding the coated API particles, wherein the pharmaceutical composition comprises a disintegration time rate of less than 10 seconds for at least six months under storage conditions of at least 25° C. and at least 60% relative humidity.