Bone Conduction Device Magnet Housing Integration
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Solution Overview
Problem
Conventional bone conduction devices are obtrusive and prone to dislodgment due to their height and design, which can interfere with clothing, and their frequency response is influenced by the weight of magnets in the vibration transmission plate, limiting their efficiency and adaptability.
Innovation Solution
A transcutaneous bone conduction device with magnets disposed on the housing rather than the pressure plate, reducing the device's height, minimizing interference with clothing, and allowing for adjustable magnet strengths and modular design for both percutaneous and transcutaneous applications, optimizing vibration transmission and retention without compromising frequency response.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If magnets are disposed on the pressure plate in conventional bone conduction devices, then vibration transmission can be achieved, but the device height increases making it obtrusive and prone to dislodgment
Solution Approach 1:
The patent relocates magnets from the pressure plate (vertical dimension) to the housing sidewall (lateral dimension), changing the spatial arrangement from vertical stacking to lateral integration. This dimensional shift reduces device height while maintaining magnetic retention function through lateral positioning of the magnets relative to the recipient's skin.
Solution Approach 2:
The patent separates the magnet function from the pressure plate structure, placing magnets independently on the housing sidewall rather than integrating them into the pressure plate assembly. This segmentation allows the pressure plate to focus on vibration transmission while magnets handle retention, optimizing both functions without compromising device height.
2Reliability
If magnets with sufficient strength are used to ensure retention, then device security improves, but frequency response is influenced negatively by the weight of magnets
Solution Approach 1:
The patent uses magnets of differing strengths that can be selectively secured to the housing based on individual recipient needs. This local quality approach allows optimization of retention force at specific locations without uniformly increasing magnet weight throughout the device, thereby maintaining frequency response efficiency while ensuring adequate retention.
Solution Approach 2:
The patent enables dynamic adjustment of magnet configuration and strength to accommodate different recipients. This dynamic adaptability allows the system to optimize the balance between retention force and frequency response efficiency for each user, rather than being constrained by a fixed magnet weight that compromises either retention or frequency response.
3Length of stationary object
If device height is reduced by relocating magnets, then obtrusiveness decreases, but magnetic retention force must be maintained through alternative positioning
Solution Approach 1:
The patent compensates for reduced vertical magnet positioning by utilizing lateral space on the housing sidewall. This dimensional transition from vertical to lateral magnet placement maintains magnetic retention force while achieving the goal of reduced device height and obtrusiveness.
Solution Approach 2:
The housing sidewall serves dual functions: providing structural support for the device and serving as a mounting surface for magnets. This multi-functionality allows the housing to contribute to both mechanical integrity and magnetic retention without increasing device height, thereby maintaining retention reliability while achieving compact dimensions.
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
The solution reduces the device's visibility and likelihood of dislodgment, enhances vibration transmission efficiency, and allows for customizable and adaptable solutions for different users, improving both comfort and performance.
Implementation Method 1
magnets disposed on the housing of an external portion of the device... magnets of differing magnet strengths can be secured as needed to the housing
Implementation Method 2
certain types of hearing prostheses commonly referred to as bone conduction devices, convert a received sound into vibrations. The vibrations are transferred through the skull to the cochlea
Data Source
AI summary
A transcutaneous bone conduction device includes magnets secured to housing of an external portion of the device. The magnets can be disposed within the housing, or secured to an external surface thereof. The magnets are disposed about a shaft that delivers vibrational stimuli to a recipient so as to evenly deliver the stimuli.