Earbud Ear-Canal Sensing for Respiratory Therapy Detection

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Solution Overview

Problem

Existing respiratory therapy systems for conditions like obstructive sleep apnea lack effective monitoring and optimization, as patient adherence and system usage are not adequately tracked, leading to suboptimal treatment outcomes.

Innovation Solution

Utilizing ear-worn devices such as earbuds to detect therapy devices by analyzing soundwaves and determining the geometry of the ear canal, enabling detection of respiratory therapy systems, pathologies, and generating therapy recommendations.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If traditional respiratory therapy systems are prescribed without monitoring, then patient autonomy and ease of use are improved, but adherence tracking and treatment optimization are worsened

Engineering Contradiction:

Improvepatient autonomyVSAvoidadherence tracking

Core Design Contradiction:

Ease of operationVSLoss of information

Solution Approach 1:

The system uses the patient's own body (ear canal geometry) as the detection medium, eliminating the need for external monitoring equipment or manual tracking. The earbud passively detects therapy device presence through acoustic signals, allowing the system to self-monitor adherence without patient intervention.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The ear canal geometry acts as an intermediary element that mediates between the therapy device and the detection system. By detecting acoustic signals through the ear canal, the system indirectly monitors therapy device presence and usage patterns without direct contact or manual reporting.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Device complexity

If no monitoring system is implemented, then device complexity is reduced, but treatment optimization and pathology detection are worsened

Engineering Contradiction:

Improvesystem simplicityVSAvoidtreatment optimization

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The earbud serves multiple functions: it acts as both an audio device and a monitoring tool. The same ear canal geometry used for normal hearing also serves as the detection medium for therapy device monitoring, pathology detection, and acoustic signal analysis, eliminating the need for separate monitoring hardware.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The system replaces complex mechanical monitoring equipment with acoustic field-based detection. Instead of using sensors, cameras, or mechanical detectors, the system uses acoustic signals transmitted through the ear canal to detect therapy device presence and characteristics, simplifying the overall system architecture.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Measurement precision

If manual tracking of therapy usage is required, then measurement precision can be maintained, but loss of time and productivity are worsened

Engineering Contradiction:

Improveusage tracking accuracyVSAvoidtracking time

Core Design Contradiction:

Measurement precisionVSLoss of time

Solution Approach 1:

The system automatically performs usage tracking without requiring patient input or manual recording. The earbud continuously monitors acoustic signals in the ear canal and autonomously detects therapy device presence, eliminating the time investment required for manual tracking while maintaining accurate measurement.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The monitoring system operates continuously and passively, detecting therapy device usage at all times without interrupting the patient's normal activities. The earbud continuously captures acoustic signals and processes usage data in real-time, eliminating the discontinuous nature of manual tracking.

Inventive Principle:

Principle #20Continuity of useful action

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

Improves the monitoring and management of respiratory conditions by accurately detecting therapy device usage, adherence, and optimizing treatment parameters, thereby enhancing patient care and reducing undetected pathologies.

Implementation Method 1

generate a model of the ear canal based on soundwave data received by microphone arrays

Methodology Applied

Scientific EffectSoundwave detection: Sound

Implementation Method 2

detect changes in the geometry of the ear canal. Based on these changes, the earbud system can determine a respiratory therapy system being used

Methodology Applied

Scientific EffectAcoustic detection: Acoustic Emission

Data Source

PatentUS20260054022A1Using ear-worn devices to detect therapy devices

Publication Date: 2026.02.26 RESMED PTY LTD

AI summary

A processor of an ear-worn device such as an earbud may generate a model of an ear canal based at least in part on a soundwave detected by two or more microphone arrays of the earbud. The processor may determine, based on a stored model of the ear canal and the model of the ear canal, a change of a geometry of the ear canal. The processor may determine, based on the change of the geometry of the ear canal, the soundwave and an oxygen saturation value of a bloodstream, a respiratory therapy device being used to treat a pathology. The processor may generate, based on the respiratory therapy device, a therapy recommendation. The recommendation may be outputted on one or more devices.