Nebulizer Synchronization with Respiratory Phases

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Conventional nebulizers waste a significant amount of therapeutic agent during the expiratory phase of respiration, as they produce nebulized droplets continuously, leading to inefficient delivery to both the upper and lower respiratory tracts, with inadequate treatment of the nasal passages and potential overtreatment of the nose.

Innovation Solution

The method involves using a continuous nebulizer with a specific inhalation and exhalation pattern, where the patient inhales for 4 seconds or more through the mouth and exhales rapidly through the nose for 3 seconds or less, ensuring that nebulized particles are effectively deposited in both the nasal passages and lungs, with a nebulizer or guide apparatus providing indicators to guide the patient through this breathing pattern.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If continuous nebulization is used during both inspiratory and expiratory phases, then the nebulizer operates continuously and produces nebulized droplets throughout the respiratory cycle, but a significant portion of the nebulized material is wasted during expiration when it does not enter the patient's respiratory tract

Engineering Contradiction:

Improvedelivery efficiency of therapeutic agentVSAvoidwaste of therapeutic agent

Core Design Contradiction:

ProductivityVSLoss of substance

Solution Approach 1:

The nebulizer is operated in a periodic manner, activating only during the inspiratory phase of respiration and remaining inactive during expiration. This timing-based operation ensures that nebulized droplets are produced only when the patient is inhaling, maximizing delivery efficiency while minimizing waste during the expiratory phase when no droplets are generated.

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

The system detects the onset of inspiration and activates nebulization in advance or synchronously with the inspiratory phase. By coordinating droplet generation with the patient's inhalation timing, the system ensures that therapeutic agents are available in the aerosol stream precisely when needed for uptake, improving delivery efficiency without continuous operation.

Inventive Principle:

Principle #10Preliminary action

2Quantity of substance

If nebulized material is produced continuously, then the nebulizer provides constant aerosol output, but only the material produced during inspiration enters the respiratory tract while material produced during expiration is wasted

Engineering Contradiction:

Improveamount of therapeutic agent deliveredVSAvoidenergy wasted in continuous nebulization

Core Design Contradiction:

Quantity of substanceVSLoss of energy

Solution Approach 1:

The nebulizer operates periodically during inspiration only, synchronized with the patient's respiratory cycle. This eliminates energy consumption during expiration when no therapeutic benefit is achieved, while maintaining adequate quantity of therapeutic agent delivery during the active inspiratory phase through concentrated aerosol production.

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

The system changes the operational parameters of the nebulizer based on respiratory phase detection. During inspiration, the nebulizer is activated with optimal aerosol generation parameters; during expiration, operation is suspended or parameters are adjusted to minimal consumption mode, thereby reducing energy waste while preserving therapeutic delivery effectiveness.

Inventive Principle:

Principle #35Parameter changes

3Quantity of substance

If the patient inhales for a longer period than exhales, then more nebulized material can be deposited in the lungs, but the exhalation phase must be shortened to maintain treatment efficiency

Engineering Contradiction:

Improvedeposition of drug agent in lungsVSAvoidbreathing pattern control for patient

Core Design Contradiction:

Quantity of substanceVSEase of operation

Solution Approach 1:

The system incorporates sensors that detect the patient's respiratory phase and provide feedback to control the nebulizer operation. This automated feedback mechanism guides the patient's breathing rhythm by synchronizing aerosol delivery with detected inspiration, making it easier for patients to maintain the optimal longer inhalation pattern without manual timing or complex instructions.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The system automatically adapts to the patient's natural breathing pattern through detection and synchronization, rather than requiring the patient to manually control the timing. The nebulizer self-regulates its operation based on detected respiratory phases, allowing the patient to breathe naturally while the system ensures optimal deposition conditions are met through automatic timing adjustment.

Inventive Principle:

Principle #25Self-service

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

This approach significantly increases the deposition of the drug agent in the nasal passages and lungs, achieving a balanced and effective surface concentration, reducing waste and ensuring thorough treatment of both respiratory tracts.

Implementation Method 1

operating a nebulizer containing the drug agent to continuously form particles containing the drug agent

Methodology Applied

Scientific EffectAerosolization: Aerosol

Implementation Method 2

The nasal turbinates are structures that protrude into the nasal passages and create turbulence in the inspired air stream. This turbulence results in capture of inhaled environmental particulates by causing inertial impaction of particles on the nasal mucosal surfaces

Methodology Applied

Scientific EffectInertial impaction: Inertia