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Eustachian tube sonic-detection-method digital inspection tester and measuring method thereof

A technology of eustachian tube and examination instrument, which is applied in the digital examination instrument of eustachian tube sound measurement method and its measurement field, which can solve the problems of lack of ET pharyngeal opening and closing state, objective index prompts, high technical requirements, etc., and achieve broad expansion potential , reliable inspection and good detection performance

Inactive Publication Date: 2016-06-22
GUANGXI MEDICAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are some deficiencies in the currently widely used eustachian tube function testing methods: such as tympanometry, tympanography and positive-negative pressure balance test can only be used for patients with tympanic membrane perforation, and catheter blowing method brings certain inconvenience to the subjects. It is difficult for children to cooperate; except for the positive and negative pressure balance method and acoustic measurement, other methods can only check the degree of passive opening of the Eustachian tube; Insufficiency of non-physiological state detection
ET paramuscular EMG test is an invasive test with cumbersome operation and high technical requirements
In the past, the research methods on ET paramuscles only involved electromyography, and there was no objective indicator to indicate the corresponding state of opening and closing of ET pharynx under a certain muscle at a certain point in time.

Method used

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  • Eustachian tube sonic-detection-method digital inspection tester and measuring method thereof
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  • Eustachian tube sonic-detection-method digital inspection tester and measuring method thereof

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Embodiment 1

[0028] The measurement method of the Eustachian tube acoustic measurement digital examination instrument comprises the following determination steps:

[0029] 1) Place the ear adapter in the external auditory canal, and place the nose adapter in the nasopharynx;

[0030] 2) Turn on the host and check the subject, including three times of empty swallowing (the state without any solid or liquid food in the mouth) and three times of pharyngeal water (the mouth contains an appropriate amount of liquid). The processing system generates white noise and filters it to generate continuous narrow-band noise with a center frequency of 8kHz and a bandwidth of 2kHz, which are output to the nose adapter through the acoustic signal output terminal and the power amplifier. The built-in microphone in the ear adapter inputs the collected sound signal to the processing system through the sound signal input port, and the processing system stores the sound signal in a digital format.

[0031] 3) ...

Embodiment 2

[0038]Synchronously collect and record the electromyogram of the subjects measured by the acoustic measurement method: the subject's nasal cavity is contracted by ephedrine and surface anesthesia with tetracaine, and the ET pharynx is identified under the nasal endoscope through the nostril on the side of the non-nasal probe. For the mouth and surrounding structures, insert needle-shaped concentric electrodes according to the anatomical site of each muscle. After the electrode needle is placed, it remains upright under the support of the turbinate, and the pharyngeal action will not cause it to fall off. The forehead skin was used as the ground electrode, and it was connected to a physiological recorder to collect myoelectricity. Myoelectric experiment parameters, sampling rate is 10000Hz, gain is 500Hz, time constant is 0.01s, high-frequency filter is 1000Hz, scanning speed is adjusted according to experimental needs, and 50Hz filter suppression function is used to eliminate ...

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Abstract

The invention discloses a eustachian tube sonic-detection-method digital inspection tester and a measuring method thereof.The eustachian tube sonic-detection-method digital inspection tester comprises a main machine, a nasal part adaptor and an aural part adaptor.The main machine comprises a sound signal input end, a sound signal output end and a processing system.The processing system is connected with the nasal part adaptor through the sound signal output end, and the processing system is connected with the aural part adaptor through the sound signal input end.A built-in loudspeaker is installed in the nasal part adaptor, a built-in microphone is installed in the aural part adaptor, and a power amplifier is connected with the sound signal output end.According to the eustachian tube sonic-detection-method digital inspection tester and the measuring method thereof, the digital signal processing technology is applied to a eustachian tube sonic detection method, detection is reliable, and the detection performance is good.Due to the fact that the measuring method of the tester has wide expansion potential on the aspects of scientific researches and clinics through careful parameter analysis and the tester is combined with electromyography to conduct synchronous collecting, recording and conjoint analysis, it makes comprehensive and integral ET open mechanism study possible, disease examination diagnosis is furthered on the aspect of physiological and pathological functions, and wide study space is achieved.

Description

technical field [0001] The invention relates to the field of organ function inspection, in particular to a digital inspection instrument for acoustic measurement of Eustachian tubes and a measurement method thereof. Background technique [0002] The Eustachian tube (Eustachian Tube, ET) is a tube connecting the nasopharynx and the tympanic cavity. The total length of an adult is about 35-39 mm, and it is composed of cartilage and bone. Its outer 1 / 3 is the bony part, and the upper part of the front wall of the tympanic cavity is the tympanic cavity; the inner 2 / 3 is the cartilaginous part, and the pharyngeal opening at the inner side is located on the side wall of the nasopharynx, and the specific position is behind and below the posterior end of the inferior turbinate . The bony part is the short outer part of the tube, and its tympanic end opens to the anterior wall of the tympanic cavity; the cartilaginous part passes through the pharyngeal opening of the Eustachian tube...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B7/04A61B5/0488
CPCA61B5/6801A61B7/04A61B5/389
Inventor 农东晓
Owner GUANGXI MEDICAL UNIVERSITY