Newborn hearing screening instrument

Abstract

The invention discloses a newborn hearing screening instrument which comprises a power module, a DSP processor module, an audio processing module, a power amplifier circuit, a probe circuit, a signal processing circuit, a storage module, a serial port communication module, a keyboard and a displayer. The processor module, the signal processing circuit and the power amplifier circuit are connected with the audio processing module. The power amplifier circuit and the signal processing circuit are connected with the probe circuit. The power module supplies power to the modules. According to the newborn hearing screening instrument, the functions of detecting transient evoked otoacoustic emission signals and distortion product otoacoustic emission signals are achieved, the newborn hearing screening instrument is completely disengaged from PC environment, portable operation is achieved, an independent rechargeable battery is adopted for power supply, keyboard operation is performed, the color liquid crystal displayer is used as a terminal, the good man-machine interface operation is achieved, the real-time printing function is achieved, and the instrument is attractive and exquisite in structure and convenient to carry.

Description

technical field [0001] The invention relates to the field of medical equipment and instruments, in particular to a newborn hearing screening instrument. Background technique [0002] Otoacoustic emission is a kind of audio energy produced in the cochlea and released to the external auditory canal through the ossicle chain and tympanic membrane. The discovery of otoacoustic emissions revealed that the cochlea not only detects and distinguishes external sounds, but also produces sounds spontaneously. Its clinical significance lies in the fact that it provides us with a method to detect cochlear enlargement function and outer hair cell functional integrity. However, currently domestically developed otoacoustic emission detectors have few functions and immature technology, while foreign otoacoustic emission detectors are expensive and not suitable for widespread use. Contents of the invention [0003] The invention provides a portable neonatal hearing screening instrument wi...

AI Technical Summary

Problems solved by technology

However, at present, the otoacoustic emission detectors developed in China have less functions and immature technology, while foreign otoacoustic emission detectors are expensive and not suitable for widespread use.

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