Respiratory Flow Indicator With Electronic Feedback for Inhaler Use

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Solution Overview

Problem

Existing medicament delivery devices, such as MDIs, face challenges in providing clear feedback on proper inhalation and exhalation, often resulting in improper drug delivery due to user coordination issues, and many devices degrade over time, leading to continued use beyond recommended periods.

Innovation Solution

A medication delivery system with a valved holding chamber incorporating a mechanical flow indicator and electronic indicator that provides visual and auditory feedback on proper inhalation and exhalation, indicating successful treatment completion and device lifespan.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a mechanical flow indicator is used to provide feedback on inhalation and exhalation, then user coordination and proper drug delivery are improved, but the device complexity increases

Engineering Contradiction:

Improveuser coordinationVSAvoiddevice complexity

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The patent replaces complex electronic sensing systems with a simple mechanical flow indicator that moves in response to airflow. This mechanical indicator provides visual feedback on inhalation and exhalation without requiring electronics, thereby improving ease of operation while avoiding excessive device complexity

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The mechanical flow indicator is passive and self-actuating, moving automatically in response to user breaths without requiring external power sources or complex control systems. This self-service mechanism provides feedback while keeping the device simple

Inventive Principle:

Principle #25Self-service

2Loss of information

If electronic indicators are added to provide visual and auditory feedback, then treatment completion confirmation is improved, but the cost of the device increases

Engineering Contradiction:

Improvetreatment completion confirmationVSAvoiddevice cost

Core Design Contradiction:

Loss of informationVSEase of manufacture

Solution Approach 1:

The patent incorporates simple electronic indicators (visual LEDs and auditory speakers) that provide feedback on treatment completion. These indicators are triggered by the mechanical flow indicator, creating a feedback loop that confirms proper inhalation and exhalation without requiring complex electronics, thus improving information feedback while controlling costs

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The patent combines the mechanical flow indicator with simple electronic indicators in an integrated system. The mechanical component triggers the electronic feedback, merging passive mechanical sensing with active electronic notification to provide comprehensive treatment confirmation at a reasonable cost

Inventive Principle:

Principle #5Merging (Combining)

3Device complexity

If indicators are positioned within the chamber housing, then the device structure is simplified, but the visibility of indicators is reduced due to humidity and moisture buildup

Engineering Contradiction:

Improvedevice structureVSAvoidindicator visibility

Core Design Contradiction:

Device complexityVSDifficulty of detecting and measuring

Solution Approach 1:

The patent positions the electronic indicators (visual LEDs and auditory speakers) on the exterior surface of the chamber housing rather than inside. This spatial relocation to another dimension (exterior vs. interior) allows indicators to remain visible and functional despite humidity and moisture buildup within the chamber

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

4Manufacturing precision

If a valved holding chamber is used to suspend medication, then drug delivery accuracy is improved, but the device cannot provide confirmation that all medication was delivered

Engineering Contradiction:

Improvedrug delivery accuracyVSAvoidmedication delivery confirmation

Core Design Contradiction:

Manufacturing precisionVSLoss of information

Solution Approach 1:

The patent incorporates electronic indicators that provide feedback on treatment completion. The visual and auditory indicators are triggered by the mechanical flow indicator to confirm that proper inhalation and exhalation occurred, giving users confidence that all medication was delivered from the valved holding chamber

Inventive Principle:

Principle #23Feedback

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

Enhances user confidence in proper device usage, ensures effective drug delivery, and extends device lifespan by providing clear feedback and monitoring, even in humid conditions, while being cost-effective compared to electronic MDIs.

Implementation Method 1

A flow indicator is moveable in response to inhalation and/or exhalation, or both, by a user through the user interface

Methodology Applied

Scientific EffectFluid flow:

Implementation Method 2

An electronic indicator is operable in response to an electronic signal transmitted in response to the movement of the flow indicator

Methodology Applied

Scientific EffectElectronic signal transmission:

Data Source

PatentUS20260014344A1Respiratory care system with electronic indicator

Publication Date: 2026.01.15 TRUDELL MEDICAL INT INC

AI summary

A respiratory care system includes a user interface. A flow indicator is moveable in response to inhalation and/or exhalation, or both, by a user through the user interface. An electronic indicator is operable in response to an electronic signal transmitted in response to the movement of the flow indicator. Methods of use and assembly are also provided.