Aerosol Deposition Analysis via Air Flow Sensing

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Solution Overview

Problem

Current methods for determining the deposition of drug aerosols in the respiratory system are either very complex or very inaccurate, relying on clinical studies or theoretical models that do not account for actual inhalation patterns.

Innovation Solution

An analysis system comprising an air duct, first and second air sensors, a control unit, and an assessment device, which measures air flow parameters to determine the deposition of aerosols in the respiratory system, enabling precise dosing of drug aerosols.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If clinical deposition studies with imaging procedures are used to determine aerosol deposition location, then measurement precision is improved, but loss of time increases

Engineering Contradiction:

Improvedeposition location determination accuracyVSAvoidtime consumption for deposition studies

Core Design Contradiction:

Measurement precisionVSLoss of time

Solution Approach 1:

The patent creates a simplified copy or model of the respiratory system with analogous flow characteristics, allowing deposition patterns to be reproduced and measured quickly without requiring actual patient imaging studies. The model system replicates key deposition mechanisms while enabling rapid experimentation.

Inventive Principle:

Principle #26Copying

Solution Approach 2:

The patent replaces complex medical imaging procedures (X-ray, scintigraphy) with a simpler mechanical measurement system using flow sensors and pressure differential measurements to track aerosol deposition patterns in real-time without radiation or complex imaging equipment.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Loss of time

If theoretical models with standardized flow curves are used to calculate deposition site, then loss of time is reduced, but measurement precision deteriorates

Engineering Contradiction:

Improvecalculation time for deposition determinationVSAvoiddeposition site accuracy

Core Design Contradiction:

Loss of timeVSMeasurement precision

Solution Approach 1:

The patent transitions from static, standardized flow curves to dynamic, real-time flow measurement that adapts to actual patient inhalation patterns. The system continuously monitors and records actual breath-by-breath flow characteristics, allowing the deposition calculation to reflect genuine patient behavior rather than theoretical averages.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent implements a feedback loop where actual inhalation flow measurements are continuously fed into the deposition calculation model, allowing real-time adjustment and refinement of deposition predictions based on observed patient behavior rather than relying solely on predetermined theoretical curves.

Inventive Principle:

Principle #23Feedback

3Measurement precision

If multiple air sensors and complex measurement systems are deployed to improve deposition measurement precision, then measurement precision is improved, but device complexity increases

Engineering Contradiction:

Improveair flow parameter measurement accuracyVSAvoidanalysis system structure

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The patent designs the air sensors and measurement system to serve multiple functions: measuring inhalation flow rate, detecting breath timing, monitoring exhalation patterns, and providing data for both immediate deposition calculation and long-term patient behavior analysis, thereby reducing the need for separate specialized sensors for each measurement type.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent combines multiple measurement capabilities into an integrated analysis system where flow sensors, pressure differential measurements, and deposition calculation algorithms work together as a unified system, reducing the number of separate components and simplifying the overall device architecture while maintaining measurement precision.

Inventive Principle:

Principle #5Merging (Combining)

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 allows for simple and accurate determination of aerosol deposition, facilitating precise dosing and improving patient outcomes by ensuring targeted delivery of medication.

Implementation Method 1

the first air sensor (120) is set up to detect at least a first air flow parameter of the air duct (110) along the first air sensor (120)

Methodology Applied

Scientific EffectPressure differential measurement: Pressure Gradient

Data Source

PatentUS20250152869A1Lung deposition analysis

Publication Date: 2025.05.15 PULMOTREE MEDICAL GMBH

AI summary

Disclosed is an analysis system for determining the deposition of an aerosol for a breathing apparatus with an analysis device comprising an air duct, a first air sensor, a control unit and an application component, wherein the air duct is set up to guide air along the first air sensor to the application component and vice versa, the first air sensor is set up to detect at least a first air flow parameter of the air guided along the first air sensor, and the control unit is set up to control the first air sensor in such a way that a time characteristic of the first air flow parameter can be measured as a first measurement result, and the first measurement result can be transmitted to an assessment device.