Dental Noise Attenuation Device with Cylindrical Resonance Chambers
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Solution Overview
Problem
Existing dental equipment generates high-frequency noise that causes hearing discomfort and communication disruption, and existing noise attenuation devices are complex, costly, and require cleaning and maintenance.
Innovation Solution
A simple, single-use device with cylindrical resonance chambers of varying lengths and diameters is designed to selectively attenuate noise between 5600 Hz and 6500 Hz without affecting human voice frequencies, featuring a structure that fits the external auditory canal and allows easy insertion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If complex resonance chambers with multiple superimposed layers are used, then selective noise reduction is achieved, but device complexity and manufacturing cost increase
Solution Approach 1:
The device divides the noise attenuation function into multiple resonance chambers, each targeting specific frequency ranges. The first resonance chamber attenuates 5600-6500 Hz noise while the second chamber handles other frequencies, allowing selective noise reduction without requiring a single complex structure.
Solution Approach 2:
The patent transitions from traditional intra-auricular spiral resonance chambers to a dimensional change by using parallel cylindrical chambers arranged in a bundle. This spatial reconfiguration simplifies the manufacturing process while maintaining the resonance function, as the parallel arrangement allows for easier fabrication compared to curved spiral structures.
2Ease of manufacture
If reusable devices are used, then cost-effectiveness improves, but cleaning and maintenance requirements increase
Solution Approach 1:
The device is designed as a disposable, single-use product that is discarded after one patient contact. This eliminates all cleaning, disinfection, and maintenance requirements associated with reusable devices, while the low manufacturing cost ensures economic viability for the dental practice.
3Object-affected harmful factors
If high-frequency noise attenuation is achieved, then hearing protection is improved, but speech and communication clarity deteriorate
Solution Approach 1:
The device applies local quality by targeting specific frequency ranges for attenuation. The first resonance chamber is specifically tuned to attenuate high-frequency noise (5600-6500 Hz) while the second chamber handles other frequencies. This selective approach ensures that harmful high-frequency noise is reduced without affecting the clarity of speech and communication.
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 reduces high-frequency noise by up to 40 dB while maintaining voice clarity, is cost-effective, and does not require maintenance, suitable for single-use or reusable applications.
Implementation Method 1
The device comprises at least one orifice for communication with the external auditory canal and at least one tubular resonance chamber having an open end and a closed end
Implementation Method 2
The device effectively reduces high-frequency noise by up to 40 dB while maintaining voice clarity
Data Source
AI summary
The invention relates to a device (1) for the selective attenuation of noise emitted by dental equipment with a so-called active part (3) whose shapes and dimensions correspond to the shapes and dimensions of an human external auditory canal (4) being and adapted to be removably inserted into the canal (4), a gripping part (5) of the device (1), the active part (3) with at least one communication orifice (71, 81, 91) with the external auditory canal (4) and at least one tubular resonance chamber (7, 8, 9) having an open end (71, 81, 91) and a closed end. The active part (3) is configured as a cylinder with at least two straight, circular-based cylindrical resonance chambers (7, 8, 9) whose longitudinal axes (A7, A8, A9) are parallel to each other and to a longitudinal axis (A3) of the active part (3). At least two resonance chambers have different lengths.