Diaphragm Pressure-Sensor Inhaler for Isolated Airflow Aerosolization

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Solution Overview

Problem

Existing vaporizers produce harmful byproducts when heating propylene glycol and other additives, which can cause respiratory issues and cancer, and fail to effectively deliver active ingredients due to instability and improper sizing, leading to undesired harmful constituents in inhaled vapor.

Innovation Solution

A vaporizer system with a cartridge assembly and handheld base assembly that uses a piezoelectric disk to aerosolize liquid without heating, ensuring consistent aerosol production and deep lung penetration, while isolating airflow from harmful components and tracking dosages through magnetic coupling and electronic communication.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If heating is used to vaporize liquid, then aerosol production is achieved, but harmful byproducts are generated causing respiratory issues and cancer

Engineering Contradiction:

Improveaerosol productionVSAvoidharmful byproducts

Core Design Contradiction:

ProductivityVSObject-generated harmful factors

Solution Approach 1:

The patent replaces the thermal field (heating) with a mechanical field (ultrasonic vibration). The ultrasonic transducer generates high-frequency vibrations that mechanically disrupt liquid molecules to form aerosol droplets, eliminating the need for heating and thus preventing the formation of harmful thermal byproducts while maintaining effective aerosol delivery

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent utilizes the phase transition from liquid to aerosol through ultrasonic cavitation and vibration rather than through thermal vaporization. This mechanical phase transition achieves the desired aerosol state without the intermediate high-temperature step that generates harmful constituents

Inventive Principle:

Principle #36Phase transitions

2Productivity

If heating is used to convert liquid to vapor, then aerosolization occurs, but active ingredients become unstable and improperly sized

Engineering Contradiction:

Improveaerosolization efficiencyVSAvoidactive ingredient stability

Core Design Contradiction:

ProductivityVSStability of the object's composition

Solution Approach 1:

The patent substitutes thermal energy with mechanical ultrasonic energy to achieve aerosolization. This mechanical disruption method preserves the chemical integrity and stability of active ingredients while producing properly sized aerosol droplets for effective lung delivery, avoiding the degradation and improper sizing caused by heating

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Device complexity

If a simple vaporizer design is used, then device complexity is reduced, but harmful components are not isolated from airflow

Engineering Contradiction:

Improvedevice structureVSAvoidharmful constituents in vapor

Core Design Contradiction:

Device complexityVSObject-generated harmful factors

Solution Approach 1:

The patent divides the device into distinct functional zones: a mouthpiece assembly for aerosol generation, a base assembly with electronics and power source, and an enclosed air passageway system. This segmentation isolates harmful electronic components from the breathable air path while maintaining overall device simplicity through modular construction

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent extracts and isolates potentially harmful components (electronic circuitry, battery, heating elements if present) from the air passageway that contacts the user's breath. The enclosed air passageway design ensures that only the aerosolized liquid reaches the user, separating the harmful elements from the breathable path

Inventive Principle:

Principle #2Taking out (Extraction)

4Productivity

If propylene glycol and additives are heated, then vaporization occurs, but respiratory issues and cancer risks increase

Engineering Contradiction:

Improvevapor productionVSAvoidrespiratory harm

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The patent replaces thermal vaporization with mechanical ultrasonic aerosolization. High-frequency vibrations from the ultrasonic transducer directly convert liquid propylene glycol and additives into fine aerosol droplets without heating, eliminating the formation of harmful respiratory byproducts while maintaining effective vapor production for inhalation

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

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 system produces a safe and effective aerosol without harmful byproducts, enhances shelf-life of pre-vaporized liquids, and ensures proper delivery of active ingredients, adhering to medical standards for safety and efficacy.

Implementation Method 1

uses a piezoelectric disk to aerosolize liquid without heating

Methodology Applied

Scientific EffectPiezoelectric effect: Piezoelectric Effect

Data Source

PatentUS12484618B2Electronic devices for aerosolizing and inhaling liquid having diaphragm and a pressure sensor

Publication Date: 2025.12.02 QNOVIA INC

AI summary

An electronic device includes a hand held base assembly that includes circuitry including memory and firmware executed by a processor or microcontroller of the circuitry; and a cartridge assembly that includes memory that is read by the firmware of the handheld base assembly. The cartridge assembly and the handheld base assembly are configured to removably couple together to define the electronic device for producing an aerosol for inhalation by a person. An enclosed air passageway is defined by the cartridge assembly and by the handheld base assembly, which isolates the airflow from the electronics of the device. The enclosed air passageway extends between the opening of the mouthpiece for taking a breath and a diaphragm of the handheld base assembly, movement of the diaphragm changing the air pressure within an enclosed interior space having a pressure sensor for trigging the pressure sensor when a breath is taken.