Triamcinolone Acetonide Composition for Easy Suprachoroidal Injection
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Solution Overview
Problem
There is an urgent clinical need for an ophthalmic formulation with triamcinolone acetonide suitable for topical administration, particularly for suprachoroidal space injection, that features a simple manufacturing process.
Innovation Solution
A pharmaceutical composition comprising triamcinolone acetonide, hyaluronic acid or its salt, a buffering agent, and tonicity adjustment, with specific ingredients and ratios to achieve suitable viscosity, osmotic pressure, and particle size for easy injection and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If triamcinolone acetonide is formulated for suprachoroidal space injection, then clinical effectiveness is improved, but formulation complexity increases
Solution Approach 1:
The patent adjusts key formulation parameters including pH (7.0-8.0), osmotic pressure (200-400 mOsm/kg), viscosity (0.01-10 cP), and particle size (0.1-10 μm) to optimize the composition for suprachoroidal injection while maintaining clinical effectiveness
Solution Approach 2:
The formulation combines triamcinolone acetonide with compatible excipients including buffers (phosphate, acetate, citrate), tonicity agents (sodium chloride, potassium chloride), and viscosity modifiers to create a stable composite pharmaceutical system suitable for injection
2Ease of manufacture
If the formulation process is simplified, then manufacturing ease is improved, but formulation precision may worsen
Solution Approach 1:
The formulation process is divided into distinct steps: preparing the buffer solution, adjusting pH, adding tonicity agents, incorporating the drug substance, and final filtration. This segmentation allows each step to be optimized independently while maintaining overall precision
Solution Approach 2:
The formulation utilizes self-adjusting mechanisms where the buffer system automatically maintains pH within the desired range and the tonicity agents self-regulate osmotic pressure, reducing the need for complex control systems while ensuring precision
Data Source
AI summary
A triamcinolone acetonide pharmaceutical composition and a preparation method therefor. The pharmaceutical composition contains the following ingredients: (i) a triamcinolone acetonide active ingredient, (ii) hyaluronic acid or a salt thereof. (iii) a buffering agent; and (iv) a tonicity adjustment agent. The pharmaceutical composition has a suitable viscosity, osmotic pressure and particle size range and is easily injected, especially administrated by means of a suprachoroidal space injection.