Flow Controlled Valve for Small-Volume Nebulizer
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Solution Overview
Problem
Existing small-volume nebulizer systems lack effective airflow control mechanisms that differentiate airflow characteristics based on direction, leading to inefficient medication delivery and resistance issues during inhalation and exhalation.
Innovation Solution
A flow controlled valve system integrated into a T-component of the nebulizer, featuring a strut and valve gate design that allows airflow in one direction while restricting it in the opposite direction, with configurations for both inhalation and exhalation to manage resistance and prevent medicine escape.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a one-way valve is used to seal the nebulizer output during exhalation, then medication delivery is improved, but airflow resistance increases during inhalation
Solution Approach 1:
The valve is divided into two independent pathways: a primary valve pathway for controlled medication delivery and a secondary bypass pathway for low-resistance airflow. This segmentation allows each pathway to optimize its function without compromising the other, resolving the contradiction between reliable medication delivery and low airflow resistance.
Solution Approach 2:
A bypass pathway acts as an intermediary element that provides an alternative route for airflow when the primary valve pathway is closed or restricted. This intermediary pathway reduces airflow resistance during inhalation while the primary pathway ensures reliable medication delivery during exhalation.
2Loss of substance
If airflow is restricted during exhalation to prevent medicine escape, then medication containment is improved, but breathing efficiency deteriorates
Solution Approach 1:
Different regions of the valve system have different flow control characteristics: the primary valve pathway has high restriction to prevent medicine escape, while the bypass pathway has low restriction to maintain breathing efficiency. This local differentiation of flow control quality resolves the contradiction between medication containment and breathing efficiency.
3Device complexity
If a simple one-way valve is used, then device complexity is reduced, but airflow control precision deteriorates
Solution Approach 1:
The valve system is segmented into multiple functional pathways with distinct flow control characteristics. This segmentation enables precise airflow control for different respiratory phases without requiring a single complex valve mechanism, thus maintaining relatively simple device structure while achieving precise airflow control.
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 flow controlled valve system ensures efficient airflow directionality, reducing resistance during inhalation and exhalation, minimizing medicine waste, and facilitating physiotherapy by creating distinct airflow characteristics based on direction, thereby enhancing respiratory therapy outcomes.
Implementation Method 1
The valve gate is attached to said strut and is able to flex from a first position to a second position. In the second position, the valve gate abuts the valve seat, creating a seal that prevents airflow through the open sections.
Implementation Method 2
The hole allows airflow in both directions through the flow controlled valve.
Data Source
AI summary
The invention relates to a flow controlled valve system. The flow controlled valve may be incorporated into a pre-filled, small-volume nebulizer assembly with a T-connector. The flow controlled valve allows different airflow characteristics in each direction. The flow controlled valve also facilitates breathing physiotherapy by creating different airflow resistances during inhalation and exhalation.