Implantable Cochlear Implant Mode Control via External Magnet Position
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Solution Overview
Problem
Conventional hearing aids for conductive hearing loss rely on air conduction, which may not be effective for all individuals, and existing cochlear implants lack adjustable operational modes based on external component positions.
Innovation Solution
A totally implantable cochlear implant system with an external portion and implantable portion that adjusts operational modes based on the position of the external element using magnetic sensors, allowing for changes in settings such as activation/deactivation of microphones, sound processors, and power sources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional hearing aids use air conduction to transmit acoustic signals, then sound can be amplified and delivered to the cochlea, but the method is not effective for all individuals with conductive hearing loss
Solution Approach 1:
The system dynamically switches between air conduction mode (using the microphone and sound processor) and bone conduction mode (using the vibration transducer) based on the detected position of the external element. This allows the device to adapt its sound transmission method to different usage scenarios and individual needs, resolving the contradiction between reliability for specific cases and versatility across different hearing loss types
2Adaptability or versatility
If cochlear implants use fixed operational modes, then the device structure remains simple, but the device cannot adapt to different usage scenarios and positions
Solution Approach 1:
The patent replaces complex mechanical control interfaces (such as buttons, switches, or dials) with a magnetic field-based detection system. The external element containing a magnet interacts with magnetic sensors in the implantable device to automatically detect position and trigger mode changes. This substitution maintains simplicity while enabling multiple operational modes, resolving the contradiction between adaptability and device complexity
3Adaptability or versatility
If the external element position is used to control operational modes, then the device becomes more adaptable to different scenarios, but the detection mechanism becomes more complex
Solution Approach 1:
The patent uses magnetic field detection instead of complex mechanical position sensors. The external element with a magnet creates a magnetic field that is detected by magnetic sensors (such as Hall effect sensors or magnetoresistive sensors) in the implantable device. This approach simplifies the detection mechanism while enabling accurate position detection for mode selection, resolving the contradiction between adaptability and detection difficulty
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
Enables flexible operation modes for improved sound processing and delivery, enhancing the effectiveness of auditory prostheses by adapting to different positions and usage scenarios.
Implementation Method 1
Sensors in the totally implantable cochlear implant detect one of several positions of the external element as that element is moved near the implant
Data Source
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AI summary
Operational modes or settings of a totally implantable cochlear implant can be adjusted or changed based on movement of an external element. Sensors in the totally implantable cochlear implant detect one of several positions of the external element as that element is moved near the implant. Depending on the position detected, one of a plurality of operational modes or settings can be selected.