Hand-Held Inhaler Sensor-Triggered Aerosol Delivery
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Solution Overview
Problem
Conventional aerosolized inhalers rely on volatile organic compounds, pressurized gases, or large amounts of heat for vaporization, which are inefficient and inconvenient, especially for patients who cannot retain oral medication due to nausea or seasickness.
Innovation Solution
A hand-held aerosolizer using an air pump and pressure or flow sensor to deliver aerosolized solutions without volatile compounds or heat, featuring a mixing nozzle that creates small droplets for optimal lung penetration and a control circuit for precise dosing, with optional compressed air cartridge for power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional inhalers use volatile organic compounds, pressurized gases, or large amounts of heat for vaporization, then aerosol delivery can be achieved, but the system becomes complex and inconvenient for patients with nausea
Solution Approach 1:
The patent extracts and eliminates the need for volatile organic compounds, pressurized gases, and large amounts of heat from the aerosolization process. Instead, it uses a simple air pump that draws ambient air through a mixing nozzle where liquid medication is aerosolized by the airflow, creating a much simpler system without these complex components
Solution Approach 2:
The patent replaces the traditional mechanical vaporization systems (using heat or pressurized gases) with a pneumatic system based on airflow through a mixing nozzle. The air pump creates a flow that directly aerosolizes the liquid medication without requiring thermal or pressure-based vaporization mechanisms
2Productivity
If conventional nebulizers use large power sources to drive aerosolization, then effective nebulization can be achieved, but the device becomes bulky and inconvenient
Solution Approach 1:
The patent uses a pneumatic system where a small air pump creates airflow through a mixing nozzle to aerosolize the medication. This pneumatic approach is much more efficient than traditional nebulizers, requiring far less power and resulting in a compact device that can be easily held and used by patients
Solution Approach 2:
The patent changes the operating parameters by using low-power airflow instead of high-power mechanical or thermal systems. The air pump operates at low power consumption levels, and the mixing nozzle is designed to efficiently aerosolize medication with minimal airflow, achieving effective nebulization without requiring large power sources
3Ease of operation
If aerosol is delivered continuously without inhalation detection, then easy operation is maintained, but medication waste increases and dosing precision decreases
Solution Approach 1:
The patent incorporates a sensor that detects the user's inhalation and provides feedback to the control circuit. The sensor monitors parameters such as pressure or flow changes associated with inhalation and uses this information to control the air pump's operation, turning it on during inhalation and off during exhalation
Solution Approach 2:
The patent implements periodic action by synchronizing the air pump operation with the user's breathing cycle. The pump operates only during the inhalation phase and remains off during the exhalation phase, creating a periodic on-off pattern that matches natural respiration and prevents medication waste
4Device complexity
If multiple medications are delivered through a single solution, then device complexity is reduced, but compatibility issues arise and dosing precision is compromised
Solution Approach 1:
The patent segments the medication delivery system by providing separate cartridges for different medications. Each cartridge contains a specific medication and connects to its own pump and mixing nozzle assembly, allowing multiple medications to be delivered simultaneously without mixing them together, thus avoiding compatibility issues
Solution Approach 2:
The patent implements dynamic control by allowing the system to selectively activate different pump-medication combinations based on the user's needs. The control circuit can independently manage multiple pumps and mixers, enabling flexible dosing of different medications at different rates and times, adapting to individual patient requirements
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 rapid, convenient, and efficient aerosol delivery to the lungs, reducing waste and ensuring precise medication administration without special breathing techniques, suitable for various therapeutic applications and recreational use.
Implementation Method 1
The air pump pulls filtered air from the atmosphere, compresses it, and delivers the compressed gas via a tube to the mixing nozzle
Implementation Method 2
Aerosolized inhalers are used on a daily basis for a wide range of medical treatments. The invention uses an air pump that eliminates the need for volatile organic compounds, pressurized gases, or large amounts of heat to produce vaporization
Implementation Method 3
A pressure or flow sensor detects the change in pressure or flow through the invention as the user inhales and this triggers pump activation
Implementation Method 4
This mechanism causes the aerosol solution to spray only while the inhaled breath stream optimally entrains the sprayed aerosol
Data Source
AI summary
A hand-held aerosolized inhaler that delivers an aerosolized solution to the user on demand when he or she inhales is provided. A pressure or flow sensor within the invention detects the change in air flow as the user inhales and triggers spraying the aerosol solution only when the inhaled breath stream will optimally entrain the sprayed aerosol. The pressure or flow sensor sends an electronic signal to turn on or off liquid and air pumps as the user breathes. Liquid, or liquid and air are pumped to the nozzle inside the invention to create an aerosolized mixture.