Portable Hearing Screening Device with Noise Adaptation
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Solution Overview
Problem
Current hearing screening methods in healthcare settings are inefficient due to the need for specialized equipment, trained audiologists, and expensive sound booths, leading to underdiagnosis of hearing loss and increased healthcare costs, as well as communication challenges during patient visits.
Innovation Solution
A portable, low-cost hearing device that combines hearing screening and personal amplification, capable of conducting a 'Go/No Go' background noise test and switching to amplification mode if the screening fails, allowing any healthcare professional to quickly assess hearing and provide immediate amplification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If formal hearing testing with audiometer and sound booths is used, then measurement precision is improved, but device complexity and cost increase significantly
Solution Approach 1:
The patent extracts the essential hearing screening function from the complex audiometric testing system. Instead of using a full audiometer with multiple frequency generators and calibrated transducers, the invention uses a simplified portable device that plays pre-recorded hearing test tones through a standard headphone jack, eliminating the need for complex sound generation and calibration equipment while maintaining sufficient screening accuracy
Solution Approach 2:
The patent uses recorded audio files of hearing test tones instead of generating tones electronically in real-time. The pre-recorded tones are stored in the device's memory and played back through the headphone amplifier, copying the acoustic output of a professional audiometer without requiring its complex signal generation circuitry
2Measurement precision
If audiologist training and specialized facilities are required, then measurement precision is improved, but ease of operation deteriorates
Solution Approach 1:
The portable device performs self-calibration and automated testing procedures. The system automatically plays tones at appropriate intervals, records the patient's responses, and generates screening results without requiring the operator to manually control each parameter or interpret complex audiometric data, making it usable by any healthcare provider without specialized audiology training
Solution Approach 2:
The device is designed to be universally operable by any healthcare professional (physicians, nurses, PAs, NPs) without requiring audiologist-specific training. It combines hearing screening functionality with integrated results interpretation and referral recommendation, making the entire hearing assessment process accessible to general healthcare providers
3Measurement precision
If comprehensive hearing testing is conducted, then measurement precision is improved, but loss of time increases
Solution Approach 1:
The device implements a partial hearing assessment focused on the most clinically relevant frequencies (500 Hz, 1000 Hz, 2000 Hz, 4000 Hz) rather than testing all frequencies from 125 Hz to 8000 Hz. This selective approach screens for the most common hearing loss patterns while completing the assessment in under 5 minutes, accepting that some less critical frequency data is omitted
4Ease of operation
If background noise is not controlled, then ease of operation is improved, but measurement precision deteriorates
Solution Approach 1:
The device performs a preliminary ambient noise level check before conducting the hearing screening. The built-in microphone measures the background noise, and the system automatically adjusts the tone presentation levels or alerts the operator if noise exceeds acceptable thresholds, allowing screening to proceed in moderately noisy environments while maintaining measurement accuracy
Data Source
AI summary
A portable hearing screening and amplification device structured to be coupled to a headset includes: a housing, a plurality of buttons, a plurality of indicators, a microphone circuit, an output circuit, a power source, and a controller. Upon passing a background noise test, the portable hearing screening and amplification device is structured to transmit a plurality of hearing screening tones to the headset for a user for testing of the plurality of hearing screening tones and complete the hearing screening based on responses of the user related to the plurality of hearing screening tones, the responses including a number of hearing screening tones that the user has perceived during the hearing screening. Based on a determination that the number of hearing screening tones perceived is less than a prerequisite number, the portable hearing screening and amplification device is further structured to switch to amplification mode and provide amplification.