Adjustable Hearing Aid Tube System for Custom Fit
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Solution Overview
Problem
The variability in human ear anatomy makes it challenging to find a standard sound tube length that fits all wearers for behind-the-ear hearing aids, requiring a wide range of sizes and complicating the fitting process.
Innovation Solution
An adjustable tube system with a releasable adaptor and locking element, along with integrally formed insertion tools and telescopic connectors, allows for customizable tube lengths by combining multiple segments and sub-elements, reducing the need for multiple sizes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a wide range of tube sizes is provided to accommodate different ear anatomies, then adaptability is improved, but device complexity and inventory requirements worsen
Solution Approach 1:
The tube system is divided into multiple detachable segments that can be combined in different configurations. The tube consists of a first segment connected to the hearing aid body, a second segment connected to the earpiece, and an optional third segment that can be inserted between them to adjust the overall length, allowing a single base design to provide multiple effective lengths.
Solution Approach 2:
The tube system transitions from a fixed-length design to an adjustable-length design where the effective tube length can be dynamically changed by inserting or removing the third segment, or by adjusting the telescopic fourth segment, enabling the same physical tube to adapt to different ear anatomies.
2Adaptability or versatility
If multiple tube sizes are manufactured to fit all wearers, then adaptability is improved, but manufacturing complexity and cost worsen
Solution Approach 1:
A single tube design with adjustable length capabilities serves multiple functions that would otherwise require several different tube sizes. The telescopic mechanism and detachable segments allow the same tube to provide multiple effective lengths, eliminating the need to manufacture and inventory multiple tube variants.
Solution Approach 2:
The tube segments are designed to nest within each other, particularly the telescopic fourth segment that slides within the third segment. This nesting arrangement allows compact storage and simplifies manufacturing by using standardized components that can be produced in larger volumes.
3Manufacturing precision
If the tube length is fixed during manufacturing, then manufacturing precision is improved, but adaptability to different wearers worsens
Solution Approach 1:
The tube is pre-configured with standardized segments and telescopic mechanisms that are precisely manufactured to specification. The adjustability is built into the design through pre-formed connection points and telescopic structures, allowing precise manufacturing of individual components while achieving overall adaptability through their combination.
Data Source
AI summary
A hearing aid includes a body and an ear piece. A life tube is disposed between the hearing aid body and the ear piece for guiding sound from a receiver in the hearing aid body to the ear of the wearer. In order to adapt the hearing aid to different wearers with different ear conches, a tube system is provided with an adaptable length.