Hearing Aid Component with Varying Elasticity for Custom Fit
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Solution Overview
Problem
The selection of elasticity for hearing aid components is subjective and lacks objective criteria, leading to potential unsatisfactory fits and resulting in costly and time-consuming adjustments for wearers.
Innovation Solution
A method involving measuring the auditory canal to generate precise measurement data, which is used to determine and manufacture components with specific material properties, such as modulus of elasticity, to ensure optimal fit and comfort through a multi-stage process like 3D printing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the elasticity of the hearing aid component is adjusted to fit the wearer's ear canal, then wearing comfort is improved, but the selection process becomes more complex and time-consuming
Solution Approach 1:
The patent applies preliminary action by measuring the ear canal geometry and determining the optimal elasticity distribution before manufacturing the hearing aid component. This pre-planning eliminates the need for trial-and-fit adjustments, as the component is customized to match the wearer's specific ear canal dimensions and elasticity requirements from the outset.
Solution Approach 2:
The patent implements local quality by assigning different elasticity values to different regions of the hearing aid component based on the measured ear canal geometry. Specific areas require different elasticities to match the local characteristics of the ear canal, creating a non-uniform elasticity distribution that optimizes comfort and fit for each individual wearer.
2Ease of operation
If multiple trial components are provided to achieve the correct fit, then wearing comfort is improved, but production costs and time increase
Solution Approach 1:
The patent eliminates the need for multiple trial components by performing preliminary measurements of the ear canal and calculating the optimal elasticity distribution before manufacturing. This upfront customization ensures that the first component produced is the correct fit, eliminating time-consuming trial-and-error adjustments and reducing both production costs and customer waiting time.
3Ease of manufacture
If the component is manufactured with uniform elasticity, then manufacturing is simpler, but it cannot provide optimal fit for different areas of the ear canal
Solution Approach 1:
The patent resolves this contradiction by implementing local quality through region-specific elasticity values. The manufacturing process takes the measured ear canal geometry and assigns different elasticity parameters to different regions of the component, ensuring that each area matches the local characteristics of the ear canal while maintaining a seamless integrated structure.
Solution Approach 2:
The patent applies parameter changes by varying the elasticity parameter across different regions of the hearing aid component based on the measured ear canal characteristics. This allows the component to have spatially varying material properties that optimize fit and comfort while being manufactured as a single integrated piece using additive manufacturing techniques.
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
This approach ensures a tailored fit and comfort by varying material properties across the component, reducing the risk of acoustic feedback and improving sound transmission, while minimizing production complexity and ensuring durability.
Implementation Method 1
the component is manufactured such that the material property has the first value for the at least first defined area of the manufactured component
Data Source
Figure 1~2
Figure 3
AI summary
The invention describes a method for manufacturing a component (26) of a hearing aid (2, 2'), wherein at least one ear canal (12) of a wearer intended for the hearing aid (2, 2') is measured and measurement data (34) of the ear canal (12) are generated, wherein a first value (E1) for a material property of at least one first delimited area (6) of the component (36) is determined on the basis of the measurement data (34), and wherein the component (36) is manufactured such that the material property has the first value (E1) for the at least first delimited area (6) of the manufactured component (36).