Flexible PCB Cable for Hearing Device Component Integration

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Solution Overview

Problem

Existing cables for hearing devices, particularly in Receiver-in-the-Canal (RIC) hearing devices, lack the flexibility and functionality to integrate additional components like sensors, and they are bulkier compared to flexible printed circuit boards (PCBs).

Innovation Solution

A cable comprising a flexible printed circuit board with multiple conductor tracks, which can be populated with sensors, LEDs, and other components, providing a compact and efficient means to connect the in-the-canal and behind-the-ear parts of a hearing device, allowing for enhanced functionality and reduced visibility.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Volume of moving object

If conventional litz wire cables are used to connect in-the-canal and behind-the-ear parts, then the cable provides sufficient electrical connections, but the cable becomes bulkier and less flexible

Engineering Contradiction:

Improvecable volumeVSAvoidfunctional integration capability

Core Design Contradiction:

Volume of moving objectVSAdaptability or versatility

Solution Approach 1:

The patent merges multiple functions into a single integrated structure by combining the cable function with a flexible PCB that can directly mount electronic components like sensors and LEDs, eliminating the need for separate wiring and component housing

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The flexible PCB serves multiple functions simultaneously: it acts as an electrical connector, a structural support, a mounting platform for additional components, and a flexible connection element, replacing the single-function litz wire cable

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If conventional cables are used, then the cable structure is simple, but additional components like sensors cannot be integrated

Engineering Contradiction:

Improvecomponent integration capabilityVSAvoidcable structure complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The flexible PCB is pre-populated with conductor tracks and component mounting areas during manufacturing, allowing sensors, LEDs, and other components to be integrated directly onto the cable structure before assembly, simplifying the overall device construction

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent replaces the traditional mechanical cable assembly with a flexible PCB that uses printed conductor tracks and surface-mount technology for component integration, transitioning from mechanical wiring to a more integrated electronic structure

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Adaptability or versatility

If more electrical connections are provided to support additional components, then functionality is enhanced, but the cable becomes bulkier

Engineering Contradiction:

Improvenumber of electrical connectionsVSAvoidcable volume

Core Design Contradiction:

Adaptability or versatilityVSVolume of moving object

Solution Approach 1:

The flexible PCB utilizes a two-dimensional planar structure with multiple conductor tracks arranged in different layers and orientations, allowing numerous electrical connections to be packed into a compact area without increasing the cable's overall volume significantly

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Data Source

PatentUS11445309B2Cable for a hearing device

Publication Date: 2022.09.13 SONOVA AG

AI summary

A cable for a hearing device is provided. The hearing device may have an in-the-canal part with a receiver and a behind-the-ear part with an electronic module. The cable may be adapted to connect the in-the-canal part and the behind-the-ear part. The cable may be a flexible printed circuit board having a plurality of conductor tracks. An end of the flexible printed circuit board is populated with at least one of a sensor, an LED and a push button.