Compact Dry Powder Inhaler With Breathable Barrier
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Solution Overview
Problem
Conventional dry powder inhalers face issues with particles either moving too fast and striking the throat or agglomerating, leading to ineffective delivery of medication to the lungs, and are bulky, making them unsuitable for portable or emergency use.
Innovation Solution
A compact dry powder inhaler design that utilizes the user's breath to deagglomerate particles, ensuring they are entrained in the inhalation stream and reach the lungs effectively, and is designed for single or disposable use, allowing operation in small spaces such as under a gas mask.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional dry powder inhalers are used, then particles can be delivered, but particles move too fast and strike the throat or agglomerate, resulting in ineffective lung delivery
Solution Approach 1:
The patent changes the physical parameters of particle delivery by using a breathable barrier that selectively allows particles to pass through at controlled speeds. The barrier material properties are optimized to slow particle movement while maintaining delivery effectiveness, preventing both too-fast throat impact and agglomeration-related failures.
Solution Approach 2:
The breathable barrier acts as an intermediary component between the particle source and the user's respiratory system. This barrier mediates particle delivery by controlling particle speed and preventing direct throat impact, while still allowing effective lung delivery. The barrier material serves as a mediating substance that transforms the delivery characteristics.
2Productivity
If conventional inhalers are designed for effective particle delivery, then they can deliver medication, but they are large and bulky, limiting portability and space for use
Solution Approach 1:
The patent employs a thin, flexible breathable barrier that can be integrated into a compact inhaler design. This thin film approach replaces bulky conventional inhaler structures while maintaining effective particle delivery. The flexible barrier can be conformable to various device shapes, enabling small, portable inhalers that fit in pockets and can be used in confined spaces.
3Volume of moving object
If inhalers are made small and compact for portability, then they can be used in small spaces, but particle delivery effectiveness may be compromised
Solution Approach 1:
The breathable barrier is designed as a thin, flexible film that maintains its functional properties regardless of device size. This thin film structure allows the inhaler to be compact while the barrier itself provides the necessary particle control mechanisms for effective delivery, decoupling device volume from delivery effectiveness.
Solution Approach 2:
The patent extracts the essential particle control function into the breathable barrier material itself, separating this function from the device structure. This allows the inhaler body to be minimized in size while the barrier material carries the particle delivery control responsibilities, enabling compact design without sacrificing delivery effectiveness.
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 inhaler achieves effective delivery of medication to the lungs regardless of altitude and atmospheric conditions, ensuring proper treatment while being small and portable, suitable for emergency and battlefield use.
Implementation Method 1
when the user's breath reaches a sufficient predetermined flow rate, the dry powder contained therein will deagglomerate
Implementation Method 2
These deagglomerated dry powder particles are then entrained in the inhaled breath stream
Data Source
AI summary
An inhaler is instantly activated upon its removal from a cover or cover unit, and by rotating a cartridge component of the inhaler with respect to a mouthpiece portion, so as to create a flow pathway for ambient air and particles. The cartridge component includes a chamber, whose contents typically include dry powders or the like. Upon creation of the flow pathway, the contents of the chamber are instantly accessible for immediate inhalation by a user through the mouthpiece portion.