Thermoelectric Cooling Earpiece for Inner Ear Temperature Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current hearing protection devices are ineffective in lowering the inner ear temperature to a therapeutic level, especially in high-noise environments, due to external cooling methods being unable to achieve significant temperature reduction within a reasonable time, and the body's temperature regulation counteracting external cooling efforts.
Innovation Solution
A hearing protection device with a cooling assembly that includes a thermoelectric cooler, a heat sink module, and a fan, which is magnetically attachable to a thermally conductive earpiece insert, allowing for precise thermal modulation closer to the cochlea, thereby efficiently lowering the inner ear temperature.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If external cooling methods are used to lower inner ear temperature, then cooling effect is achieved, but temperature reduction is insufficient and takes too long
Solution Approach 1:
The patent introduces a thermally conductive insert as an intermediary element that conducts heat from the inner ear to the cooling assembly. This mediator enables efficient heat transfer directly from the cochlea region to the cooling module, significantly improving cooling speed and effectiveness compared to external cooling methods.
Solution Approach 2:
The patent replaces passive external cooling mechanisms with an active thermoelectric cooling system. The thermoelectric cooler (Peltier device) uses electrical current to create a temperature differential, actively pumping heat from the inner ear region to the heat sink, thereby achieving rapid and controlled cooling.
2Temperature
If external cooling is applied to the ear, then some cooling effect is achieved, but physiological temperature regulation counteracts the cooling
Solution Approach 1:
The thermally conductive insert serves as a direct thermal pathway that bypasses the body's temperature regulation mechanisms. By establishing a dedicated heat conduction route from the inner ear to the cooling assembly, the system maintains reliable cooling effectiveness despite physiological counter-regulation.
Solution Approach 2:
The active thermoelectric cooling system overrides passive physiological temperature regulation by using electrical energy to create a controlled temperature differential. This active mechanism ensures consistent cooling effect that is not dependent on or counteracted by the body's natural thermal regulation processes.
3Device complexity
If cooling assembly is placed far from the ear, then device simplicity is maintained, but thermal communication is insufficient
Solution Approach 1:
The cooling assembly is designed with a nested configuration where the thermally conductive insert is positioned within the ear canal, and the cooling module is integrated close to the insert. This nested arrangement minimizes the thermal path length while maintaining a compact overall device structure, achieving effective cooling without excessive complexity.
Solution Approach 2:
The thermally conductive insert acts as an extended intermediary that reaches into the ear canal to establish direct thermal contact with the inner ear. This mediator enables efficient heat transfer even when the main cooling assembly remains in a compact configuration, resolving the contradiction between device simplicity and thermal effectiveness.
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 device effectively lowers the inner ear temperature to therapeutic levels, mitigating or preventing noise-induced hearing loss by providing a quick, non-invasive, and safe intervention that is less susceptible to physiological temperature regulation.
Implementation Method 1
The cooling module includes a thermoelectric cooler
Implementation Method 2
a heat sink module in thermal communication with the cooling module
Implementation Method 3
a fan adapted to reject heat from the cooling module
Implementation Method 4
a cooler magnet configured to magnetically attach to the earpiece
Implementation Method 5
a thermally conductive insert insertable into an ear canal and having a thermally conductive tip
Data Source
AI summary
Hearing protection devices are described that provide therapeutic benefit by a cooling mechanism adapted to lower the temperature of a user wearing the hearing protection device. The hearing protection devices include a cooling assembly; and an earpiece magnetically attachable to the cooling assembly, wherein the cooling assembly comprises a cooling module, a heat sink module in thermal communication with the cooling module, and a fan adapted to reject heat from the cooling module; the cooling module comprises a thermoelectric cooler and a cooler magnet; and the earpiece comprises a body, a thermally conductive insert having a thermally conductive tip portion, and an earpiece magnet configured to magnetically attract to the cooler magnet.