Orally Disintegrating Film with Composite Polymer Matrix and Microemulsion
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Solution Overview
Problem
Existing orally disintegrating films based on single polymers suffer from low flexibility, require high polymer content for uniform drug distribution, and lack control over disintegration times and mechanical properties, making them difficult to manufacture and commercialize with precise active ingredient distribution.
Innovation Solution
A polymeric matrix comprising a combination of pregelatinized hydroxypropyl pea starch and pullulan, with a microemulsion of an active ingredient dispersed in an oil medium and surfactants, allows for uniform distribution and controlled disintegration times and mechanical strength, enabling precise dosage and commercial viability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single polymer is used to form the film matrix, then the formulation is simple, but the film lacks flexibility and requires high polymer content for uniform drug distribution
Solution Approach 1:
The patent employs composite materials by combining multiple polymers (hydroxypropyl methyl cellulose, hydroxypropyl cellulose, and pullulan) in specific ratios within the film matrix. This composite approach enables the film to achieve both flexibility and uniform drug distribution without requiring excessive polymer content, thereby resolving the contradiction between formulation simplicity and film adaptability.
Solution Approach 2:
The patent applies parameter changes by systematically varying the ratios of different polymers in the film matrix to optimize film properties. By adjusting polymer composition and ratios, the formulation achieves desired flexibility and drug distribution characteristics while maintaining a relatively simple overall structure, thus resolving the contradiction between simplicity and adaptability.
2Manufacturing precision
If high polymer content is used to ensure uniform drug distribution, then distribution uniformity improves, but film flexibility decreases and manufacturing difficulty increases
Solution Approach 1:
The use of composite polymer materials with specific ratios (HPMC, HPC, and pullulan) allows the film to achieve uniform drug distribution at moderate polymer content levels. The synergistic interaction between different polymers enhances drug dispersion uniformity without requiring excessive polymer quantities, thereby reducing manufacturing complexity and difficulty.
Solution Approach 2:
The patent optimizes polymer content and ratios as key parameters to achieve uniform drug distribution. By carefully controlling the composition parameters (specific polymer ratios and total polymer content), the formulation achieves manufacturing precision in drug distribution while maintaining ease of manufacture through reduced polymer requirements.
3Device complexity
If single polymer films are used, then the formulation is straightforward, but control over disintegration times and mechanical properties is limited
Solution Approach 1:
The composite polymer system (combining HPMC, HPC, and pullulan) provides enhanced control over disintegration times and mechanical properties through the synergistic effects of different polymers. Each polymer contributes specific characteristics that can be tuned by adjusting ratios, enabling precise control of film performance while maintaining a relatively straightforward formulation approach.
Solution Approach 2:
The patent utilizes parameter changes in polymer composition and ratios to independently control disintegration time and mechanical properties. By adjusting the proportions of HPMC, HPC, and pullulan, the formulation achieves versatile control over multiple film characteristics without significantly increasing formulation complexity, thus resolving the contradiction between simplicity and adaptability.
4Adaptability or versatility
If precise control of film properties is achieved through polymer combinations, then product functionality improves, but manufacturing complexity increases
Solution Approach 1:
The composite polymer formulation achieves precise control of film properties (disintegration time, mechanical strength, drug distribution) through the synergistic combination of HPMC, HPC, and pullulan. The established polymer ratios and composition guidelines provide a systematic approach that enables versatile product functionality while maintaining manageable manufacturing complexity through standardized formulation protocols.
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 combination achieves disintegration times of 300 seconds or less, ultimate tensile strength below 1.8 N/mm², and high accuracy in active ingredient distribution, enhancing patient compliance and ease of administration.
Implementation Method 1
an active ingredient dispersed in a microemulsion within the polymeric matrix
Implementation Method 2
microemulsion comprising an oil medium, water and at least one surfactant
Data Source
Figure 1~2
Figure 3~4B
AI summary
Disclosed is an orally disintegrating film composition comprising an active ingredient (e.g. a Cannabinoid) and a polymeric matrix, which is comprising of a combination of at least two water-soluble film forming polymers to form a polymeric matrix and wherein the active ingredient is uniformly dispersed in a microemulsion, consisting of an oil medium, surfactant and water, within the polymeric matrix.