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Variable-pressure pure-tone audiometry device and method

A pure tone and audiometric technology, applied in the field of audiology testing, can solve problems such as improper operation and errors, achieve simple devices and methods, and improve testing efficiency.

Pending Publication Date: 2018-12-18
广州市尚听医疗器械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the tympanogram is the most commonly done acoustic impedance item. By observing the shape of the tympanogram, it can be inferred whether there is a middle ear lesion. However, this test item is an objective test. During the test, the subjects do not need to behave like pure tone audiometry. Response, the results are measured directly by the instrument. According to literature reports, some experts believe that under the current technology, the accuracy of the tympanogram results may be less than 50%, and large errors may easily occur due to improper operation or uncooperative subjects

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] figure 1 and figure 2 A transformer pure tone audiometry device according to an embodiment of the present invention is schematically shown.

[0026] refer to figure 1 and figure 2 , The variable pressure pure tone audiometry device includes a sealed earmuff 1, an earphone 2, an audiometer 3, an inflation and deflation device 4, an MCU controller 5, a pressure sensor 6, a serial communication module 7 and a host computer 8.

[0027] The sealing earmuff 1 includes an earmuff 11 and an airbag sealing ring 12 , and the airbag sealing ring 12 is fixedly connected to the edge of the earmuff 11 . The earmuff 11 is in the shape of a hemispherical surface, and the earmuff 11 can completely cover the whole human ear, and the edge of the earmuff 11 is sealed by an air bag sealing ring 12 . The airbag sealing ring 12 is an annular cylinder, and the airbag sealing ring 12 can be closely attached to the subject's head and face to prevent the entry of internal or external air af...

Embodiment 2

[0034] This embodiment provides a variable voltage pure tone audiometry method using the variable voltage pure tone audiometry device of Embodiment 1, including the following steps:

[0035] S1. Obtain the pure tone air conduction hearing threshold under normal pressure: wear the sealed earmuff 1 for the subject, and play the test sound to the subject with the earphone 2 without changing the pressure in the earmuff, and pass the audiometer 3 The test can measure the pure tone air conduction hearing threshold of the subject. Select multiple frequencies as the test frequency to perform pure tone air conduction hearing threshold test on subjects under normal pressure; hearing threshold frequencies include: 125Hz, 250Hz, 500Hz, 750Hz, 1000Hz, 1500Hz, 2000Hz, 3000Hz, 4000Hz, 6000Hz and 8000Hz .

[0036] S2. Setting the intensity of the test tone: select the pure tone air conduction hearing threshold measured in step S1 plus a predetermined sound intensity as the intensity of the t...

Embodiment 3

[0044] The present embodiment is the concrete operation process of embodiment 2, comprises the following steps:

[0045] 1) The subject puts on the sealed earmuffs 1 for the test, and then obtains the pure tone air conduction hearing threshold of the subject according to the conventional pure tone test method. Hearing threshold frequencies include: 125Hz, 250Hz, 500Hz, 750Hz, 1000Hz, 1500Hz, 2000Hz, 3000Hz, 4000Hz, 6000Hz and 8000Hz.

[0046] 2) Select a test frequency threshold 10dB for pressure change test. For example, the conventional threshold value of 500Hz is 30dBHL, and 500Hz and 40dBHL are selected for the pressure change test.

[0047] 3) The operator explains the test method to the subject: Next, you will hear a pure tone stimulation sound from the earphone, and at the same time the pressure in the earmuff will change for 2 seconds, and you may feel some discomfort, such as a sense of bloating, but this This situation will not do you any harm, please let me know i...

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Abstract

The invention discloses a variable-pressure pure-tone audiometry device which comprises a sealing ear cover, an earphone, a hearing meter, an air inflation and deflation device, an MCU controller anda pressure sensor, wherein the earphone and the pressure sensor are both fixed in the sealing ear cover, the earphone is connected with the hearing meter, the air inflation and deflation device is connected with the sealing ear cover and can be used for inflating or deflating the sealing ear cover, the air inflation and deflation device is connected with the MCU controller, and the pressure sensoris connected with the MCU controller. The invention further discloses a variable-pressure pure-tone audiometry method which comprises the following steps: S1, acquiring a pure-tone air-conduction hearing threshold value under normal pressure; S2, setting the test sound intensity; S3, carrying out hearing test under the variable pressure and recording a test result; S4, repeating the steps S2-S3 to obtain a whole-frequency-band test result. According to the invention, a simple method is adopted, and air pressure adjustment can be carried out in a pure tone sounding process, the listening function monitoring is realized and more diagnosis information is provided, and the testing efficiency is improved, a means is provided for improving the accuracy of the listening function test, and a verification tool is also provided for other hearing inspection methods. The device and the method are a novel device and method for conveniently testing the sound transmission state of the middle ear.

Description

technical field [0001] The invention relates to the field of audiology testing, in particular to a variable pressure pure tone audiometry device and method. Background technique [0002] Hearing test is the most routine and important examination item in the otology clinic. The results can reflect the degree and nature of hearing loss and the location of the lesion, and are widely used in clinical diagnosis and treatment of otolaryngology and experience. At present, the routine hearing test items include pure tone audiometry and acoustic conductance (impedance) test. [0003] Pure tone audiometry is a standardized subjective behavioral response audiometry for testing hearing acuity, which includes air conduction threshold and bone conduction threshold test. By observing the air conduction and bone conduction threshold results, it can be inferred whether the factor of hearing impairment is sensorineural, conductive or mixed. However, in clinical tests, it is found that the t...

Claims

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Application Information

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IPC IPC(8): A61B5/12
CPCA61B5/123
Inventor 蓝天翔
Owner 广州市尚听医疗器械有限公司
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