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Hand-held portable hearing screening apparatus utilized otoacoustic emissions

A technology of otoacoustic emission and screening instrument, which is applied in ear therapy, medical science, transducer circuit, etc. It can solve the problems of complex hardware circuit, inconvenient use, intuition, and few software functions, so as to reduce the volume, Friendly man-machine interface, convenient control and simplified effect

Inactive Publication Date: 2008-07-16
SHANGHAI JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The hardware circuit of the system is more complex, the software has fewer functions, and the use is not very convenient and intuitive.

Method used

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  • Hand-held portable hearing screening apparatus utilized otoacoustic emissions
  • Hand-held portable hearing screening apparatus utilized otoacoustic emissions
  • Hand-held portable hearing screening apparatus utilized otoacoustic emissions

Examples

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Embodiment Construction

[0024] The present invention proposes an embodiment of a hand-held and portable otoacoustic emission hearing screening instrument, which consists of two parts: hardware circuit and control menu management. The details are as follows in conjunction with the accompanying drawings:

[0025] The overall structure of the hardware circuit of this embodiment is as follows image 3As shown, it includes a micro-probe composed of a micro-microphone, two micro-speakers and electronic tags, an analog processing part for filtering and program-controlled amplification of the collected signals, a digital processing part for realizing various signal processing algorithms, and a liquid crystal screen for displaying results and a keyboard for information entry. The miniature probe, the analog processing part, the liquid crystal display and the keyboard are respectively connected with the digital processing part. In the micro probe, the micro speaker is connected to the volume adjustment circui...

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Abstract

There is a handholding portable acoustic emission screening examination appearance, which belongs to medical service appearance field. It contains a micro probe composed of a micro loudspeaker that is used to broadcast stimulation sound, a micro microphone that is used to distill acoustic emission signal and a electronic label that is used to probe information and protect product property through key management; A simulation manipulation part composed of micro loudspeaker volume regulating circuit, signal filtering treating circuit and signal multiple-stage enlargement circuit; A data processing part composed of digital-to-analog conversion circuit that is used to sample the distilled acoustic emission signal, high-speed data processing CMOS chip that is used to engender stimulation sound and control management menu, acoustic data storage, program storage and liquid crystalline display storage, RS232 asynchronous expansion serial port, USB interface, JTAG interface, etc. externally input / output and conjunction interfaces; And a keyboard used to display liquid crystalline display screen and input information. This invention is convenient to use, it has small bulk and is facilitating to take.

Description

technical field [0001] The invention relates to an instrument in the technical field of medical instruments, in particular to a handheld and portable otoacoustic emission screening instrument. Background technique [0002] Otoacoustic emissions (OAEs) are audio energy produced in the cochlea and released into the external auditory canal through the ossicular chain and tympanic membrane. In 1978, British scholar Kemp used a short sound as a transient sound stimulation signal, and used a headphone / microphone combination probe to record for the first time that in addition to the rapidly decaying stimulation signal in the sound field signal of the human external auditory canal, there is a delay of several milliseconds before it appears. The audio signal lasting more than ten milliseconds is generally considered to be the early Kemp echo generated by the active energy consumption process of the cochlea, that is, otoacoustic emission. The presence of otoacoustic emissions is one ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B5/12A61B5/00A61F11/00H04R3/00
Inventor 柴新禹徐玉峰赵瑛
Owner SHANGHAI JIAOTONG UNIV
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