Asymmetric Anchor for Hearing Device Retainer Orientation

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Solution Overview

Problem

Conventional hearing device retainer assemblies are prone to incorrect orientations during mounting due to their symmetric design, leading to potential irritation and improper retention within the ear canal.

Innovation Solution

The hearing device incorporates an asymmetric anchor with visible and/or tactile indicators and connectors that ensure correct orientation of the retainer assembly relative to the receiver assembly, providing a clear indication of proper alignment and preventing incorrect mounting.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If a symmetric anchor design is used, then the retainer assembly can be manufactured with simple geometry, but the user cannot determine the correct orientation during mounting

Engineering Contradiction:

Improveanchor geometry simplicityVSAvoidorientation determination during mounting

Core Design Contradiction:

Ease of manufactureVSEase of operation

Solution Approach 1:

The anchor is designed with asymmetric geometry where the width of the first wall differs from the width of the second wall. This asymmetry creates a unique correct orientation that can be visually and tactilely identified by the user during mounting, eliminating confusion about proper alignment while maintaining manufacturing simplicity.

Inventive Principle:

Principle #4Asymmetry

Solution Approach 2:

The anchor incorporates localized features including a recess in one wall and protrusions on adjacent walls, creating distinct tactile and visual cues at specific locations. These local quality variations provide clear orientation indicators without requiring complex overall geometry, allowing users to easily determine correct positioning during assembly.

Inventive Principle:

Principle #3Local quality

2Strength

If sharp corners are used in the anchor design, then the structure is simpler and stronger, but it causes irritation within the ear canal

Engineering Contradiction:

Improveanchor structural strengthVSAvoidear canal irritation

Core Design Contradiction:

StrengthVSObject-affected harmful factors

Solution Approach 1:

The anchor features curved corners instead of sharp angles, with each corner having a radius of curvature between 0.001 inches and 0.01 inches. This curvature eliminates sharp edges that would irritate the ear canal while maintaining sufficient structural strength through the optimized curved geometry and appropriate material selection.

Inventive Principle:

Principle #14Spheroidality (Curvature)

3Reliability

If the retainer strip is bent into a stressed state for positioning, then the ITE component is securely retained, but the user cannot easily determine correct orientation before use

Engineering Contradiction:

Improveretention securityVSAvoidorientation verification before use

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The asymmetric anchor geometry with its distinctive wall configurations is designed in advance to provide self-evident orientation cues. The recess and protrusions are pre-positioned to create visual and tactile indicators that guide the user to the correct orientation before the retainer strip is inserted, eliminating the need for trial-and-error positioning.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS10609497B2Canal hearing device with retainer

Publication Date: 2020.03.31 SONOVA AG

AI summary

A hearing device in accordance with at least one of the present inventions includes a receiver assembly and a retainer assembly, including an anchor and a flexible retainer strip extending from the anchor, configured to be mounted onto the receiver assembly in a predetermined orientation relative to the receiver assembly. The receiver assembly and the retainer assembly include respective elements that cooperate with one another to provide a visible and/or tactile indication that the anchor is in the predetermined orientation when the anchor is in the predetermined orientation and that the anchor is not in predetermined orientation when the anchor is in an orientation other than the predetermined orientation.