Self-Dispersing Dry Pharmaceutical Unit Dose Reconstitution
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Solution Overview
Problem
Current pharmaceutical unit dose systems for oral administration, particularly dry powder for suspensions, face challenges such as inaccurate reconstitution, instability, and safety issues due to human error, viscosity, and storage conditions, limiting their use and stability.
Innovation Solution
A self-dispersible dry pharmaceutical composition packaged in a container with a volume at least five-fold greater than the composition, allowing for easy reconstitution with a liquid medium without the need for vigorous shaking, and a peelable seal for stability and convenience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If traditional multidose bottles with reconstitution procedure are used, then long-term storage stability is achieved, but reconstitution errors and safety issues occur due to human error
Solution Approach 1:
The invention divides the traditional multidose bottle into multiple unit-dose compartments, each containing a separate dry powder formulation. This segmentation prevents reconstitution errors by ensuring each compartment is independently sealed and pre-measured, eliminating the risk of incorrect mixing ratios or contamination between doses.
Solution Approach 2:
The dry powder formulations are pre-prepared and sealed in unit-dose compartments before use. The reconstitution process is simplified by providing pre-measured liquid compartments that automatically mix with the powder when activated, eliminating the need for manual measurement and mixing procedures that lead to human error.
2Ease of operation
If oral liquids are used for easy administration, then patient compliance improves, but drug stability deteriorates due to liquid formulation limitations
Solution Approach 1:
The invention changes the physical state of the drug from liquid to dry powder form, which dramatically improves stability while maintaining ease of administration. The dry powder is converted to liquid form only at the point of use through automated reconstitution, allowing the drug to be stored in a stable dry state and administered in a liquid state.
Solution Approach 2:
The system utilizes phase transition between solid (dry powder) and liquid states. The drug is stored as a stable dry powder and automatically reconstituted to liquid form immediately before administration, combining the stability advantages of solid formulations with the administration advantages of liquid formulations.
3Stability of the object's composition
If vigorous shaking is applied during reconstitution, then complete dispersion is achieved, but device complexity and operation difficulty increase
Solution Approach 1:
The unit-dose compartments are designed to self-mix when activated. The automated reconstitution system handles the mixing process without requiring manual vigorous shaking by the user. The compartment design facilitates automatic dispersion of the dry powder when liquid is added, eliminating the need for complex manual mixing operations.
4Duration of action of stationary object
If refrigeration storage is implemented for constituted suspension, then shelf-life is extended, but loss of time and convenience increase
Solution Approach 1:
The invention uses disposable unit-dose compartments that are sealed and stable in dry form. Each compartment is designed for single-use, eliminating the need for refrigeration of constituted suspensions. The dry powder remains stable at room temperature until activation, and after use the compartment is discarded, avoiding the time loss associated with refrigerated storage and the risk of improper storage conditions.
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 solution enables accurate and simple reconstitution of a single unit dose of a dry pharmaceutical composition, improving stability, reducing errors, and extending shelf-life, allowing for on-demand reconstitution without refrigeration, making it suitable for various settings and users.
Implementation Method 1
at least one pharmaceutically acceptable excipient that allows the dry pharmaceutical composition to self-disperse in the presence of a liquid medium
Data Source
AI summary
This disclosure provides a pharmaceutical unit dose system. The unit dose system includes a unit-of-use self-dispersing dry composition for oral suspension. Also provided is a method for preparing a single unit dose of a dry pharmaceutical composition for oral administration. The unit dose system is advantageous in the convenience of use, dosing accuracy, long term storage, suspension uniformity over conventional multidose powder composition for oral suspension.