Dry Powder Inhaler Formulations for Stable Dual-Drug Dosing
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Solution Overview
Problem
Existing dry powder inhaler technologies face challenges in formulating multiple drugs together due to chemical interactions and require complex mechanisms for simultaneous or sequential administration, leading to user inconvenience and device complexity.
Innovation Solution
A dry powder formulation comprising two sub-formulations, each containing a different drug, that are physically contacted within a dose container and administered simultaneously using a single inhaler actuation, eliminating the need for separate administration and complex devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If multiple drugs are formulated together in a single combination formulation, then convenience for the inhaler user is improved, but chemical interactions between drugs may occur leading to formulation instability
Solution Approach 1:
The formulation is divided into multiple distinct sub-formulations, each containing a different drug. These sub-formulations are physically separated within the inhaler device using separate blister strips or compartments, preventing chemical interactions while enabling simultaneous administration through a single actuation.
Solution Approach 2:
Multiple sub-formulations are nested within a single inhaler device structure, with each drug formulation contained in its own blister strip or compartment that is integrated into the overall device architecture. This allows combination therapy delivery without direct contact between incompatible drugs.
2Reliability
If separate formulated drugs are administered in-tandem or sequentially, then chemical interactions are avoided, but the inhaler device becomes complicated and user actions become complex
Solution Approach 1:
Multiple separate drug formulations are combined into a single inhaler device with multiple integrated blister strips or compartments. The device architecture merges separate administration capabilities into one unified unit that delivers all drugs through a single actuation, maintaining formulation stability while simplifying device operation.
Solution Approach 2:
The inhaler device is designed with multi-functionality to accommodate and deliver multiple different drug formulations through a single device and single actuation mechanism. Each blister strip or compartment is configured to work with the same actuation system, eliminating the need for separate devices or complex switching mechanisms.
3Reliability
If separate formulated drugs are administered sequentially, then chemical interactions are avoided, but time consumption and patient preparation steps increase
Solution Approach 1:
Multiple drug formulations are pre-positioned in separate but integrated blister strips or compartments within the inhaler device before use. The device is prepared in advance to contain all necessary sub-formulations in a configuration that allows simultaneous delivery through a single actuation, eliminating the need for sequential preparation steps.
Data Source
AI summary
Dry powder formulations (preferably configured for use with a dry powder inhaler) including a first sub-formulation that includes a first drug and a second sub-formulation that includes a second drug, the first sub-formulation and the second sub-formulation being in physical contact.