Cochlear Implant Sensor Unit for Active Feedback Control
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Solution Overview
Problem
Conventional cochlear implant apparatuses struggle to effectively classify and recognize sounds of varying magnitudes due to the lack of a mechanism to detect pressure deviations, leading to inefficient sound processing and the need for external devices that consume power and are cumbersome.
Innovation Solution
A cochlear implant apparatus with a sensor unit that includes nanopillars or piezoelectric elements, capable of detecting vibrations and generating electrical signals corresponding to sound magnitudes, and actuators that control sensitivity in each frequency band, simulating the mechanism of the outer hair cell in the cochlea.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional cochlear implant apparatus uses external sound processor and microphone to process sound signals, then sound signal processing capability is provided, but device complexity increases and user adaptation time increases
Solution Approach 1:
The patent merges the external sound processor and microphone into an integrated internal device that can be implanted directly into the cochlea. The sound processing function is combined with the electrical stimulation function in a single implantable unit, eliminating the need for separate external equipment and reducing user adaptation time.
Solution Approach 2:
The patent embeds the sound processing functionality within the cochlear implant structure itself. The microphone and sound processor are nested within the implantable device, allowing the entire system to be contained within the body rather than requiring external attachments.
2Power
If conventional cochlear implant apparatus uses external sound processor to amplify and filter sound signals, then sound processing function is provided, but power consumption increases
Solution Approach 1:
The patent enables the cochlear implant to process sound signals independently using its integrated microphone and sound processor, eliminating the need for continuous external power supply. The device serves itself by performing all necessary sound processing functions internally, significantly reducing power consumption while maintaining processing efficiency.
3Measurement precision
If conventional cochlear implant apparatus does not include mechanism to detect pressure deviation, then device structure is simple, but sound classification and recognition capability is insufficient
Solution Approach 1:
The patent replaces traditional mechanical sound detection with a piezoelectric-based detection system. The piezoelectric element converts mechanical sound pressure directly into electrical signals, providing precise pressure deviation detection without complex mechanical structures. This substitution maintains measurement precision while simplifying the overall device architecture.
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 the division and recognition of sounds based on pressure deviations, allowing for more effective sound sensitivity control and reduced reliance on external devices, improving user adaptation and sound processing efficiency.
Implementation Method 1
a sensor unit configured to detect vibration according to sound and generate an electrical signal corresponding to a magnitude of the vibration
Implementation Method 2
actuators disposed in the sensor unit and each configured to react to the electrical signal and to control sensitivity according to a magnitude of sound or selectivity of sound detected in each frequency band
Data Source
AI summary
The present invention relates to a cochlear implant apparatus, and more particularly, to a cochlear implant apparatus capable of controlling the sensitivity or selectivity of sound through actuators. In accordance with an exemplary embodiment of the present invention, a cochlear implant apparatus for active feedback control which is inserted into the human body and configured to detect a sound in each frequency band includes a sensor unit configured to detect vibration according to a sound and generate an electrical signal corresponding to a magnitude of the vibration and actuators disposed in the sensor unit and each configured to react to the electrical signal and to control sensitivity according to the magnitude of the sound or the selectivity of a sound detected in each frequency band.