Portable Nebulizer Flutter Valve Expiratory Pressure Control
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Solution Overview
Problem
Conventional nebulizers are bulky, require connecting tubing and a power supply cord, and lack portability, making them inconvenient for use in treating respiratory diseases.
Innovation Solution
A portable nebulizer design featuring a pen-like structure with a built-in fluid reservoir, vibrating mesh disc for aerosolization, and a flutter valve that allows for inhalation and exhalation control without the need for external tubing or power cords, powered by a rechargeable battery with wireless charging options.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional nebulizer design with external compressor and tubing is used, then reliable medication delivery is achieved, but device portability and ease of operation deteriorate
Solution Approach 1:
The patent combines the compressor, medication reservoir, control electronics, and battery into a single integrated handheld device. The compressor is miniaturized and positioned within the device body, eliminating the need for external components and connecting tubing. This merging of functions achieves portability while maintaining reliable medication delivery through the integrated aerosol generation system.
Solution Approach 2:
The device integrates multiple functions into a single unit: the compressor generates aerosol, the reservoir stores medication, the battery provides power, and the control system manages operation. This multi-functionality eliminates the need for separate external devices, achieving portability without sacrificing therapeutic reliability.
2Ease of operation
If miniaturized compressor is integrated into handheld device, then portability is improved, but device weight and power requirements worsen
Solution Approach 1:
The device operates in periodic cycles where the compressor runs intermittently to generate aerosol during inhalation phases, then stops during exhalation phases. This periodic operation reduces average power consumption compared to continuous operation, making the battery-powered handheld device practical while maintaining effective medication delivery during active inhalation.
Solution Approach 2:
The device includes a rechargeable battery that can be recharged from standard power sources, enabling the device to serve itself without requiring constant external power connection. The battery management system monitors charge levels and manages power distribution to optimize energy usage, reducing the burden on the user while maintaining portability.
3Reliability
If flutter valve is added for expiratory pressure control, then respiratory treatment efficacy is improved, but device complexity worsens
Solution Approach 1:
The flutter valve acts as a passive mechanical intermediary that automatically regulates expiratory pressure without requiring active electronic control. The valve's specific mechanical design allows it to open at predetermined pressure thresholds, providing therapeutic expiratory resistance to improve lung function while avoiding the complexity of electronic pressure sensors and control algorithms.
Solution Approach 2:
The flutter valve replaces what could have been an electronically controlled active pressure regulation system with a passive mechanical device. This mechanical solution achieves the same therapeutic effect of expiratory pressure control with significantly reduced complexity, no power consumption, and inherent reliability through its purely mechanical operation.
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
Enables convenient, portable administration of medication in a mist form, allowing for efficient delivery of aerosolized medication with adjustable expiratory pressure to aid in respiratory treatments, improving user experience and treatment efficacy.
Implementation Method 1
a mesh disc for delivering the fluid to the aerosol delivery channel in an aerosol form upon the mesh disc being energized
Implementation Method 2
The flutter valve is moveable between a closed position on inhalation via the mouthpiece and an open position when an expiratory pressure greater than a predetermined expiratory pressure is exerted on the flutter valve
Data Source
AI summary
A nebulizer has a body, a fluid reservoir, and a flutter valve. The body has a first end that has a mouthpiece, a second end, an aerosol delivery channel extending though the body from the first end to the second end, and a fluid reservoir receiving compartment in communication with the aerosol delivery channel. The fluid reservoir is positioned in the fluid reservoir receiving compartment. The fluid reservoir contains a volume of fluid and has a vibrating mesh disc for delivering the fluid to the aerosol delivery channel in an aerosol form upon the vibrating mesh disc being energized. The flutter valve is positioned in the aerosol delivery channel of the body near the second end of the body. The flutter valve is moveable between a closed position and an open position when the expiratory pressure greater than a predetermined expiratory pressure is exerted on the flutter valve.