A SYSTEM FOR AUDITORY IMPAIRMENT SCREENING

摘要

The present invention relates to a hearing impairment screening system having fast test screening for neonates. The system comprises of a head frame (17) having microphone (13), audio transducer and at least three surface electrodes, a signal amplification unit (10), a signal filtering unit (11), an analog to digital converter (12) and fed to a digital processing and control unit (15). A display unit (16) can display the ABR in digital format which can be evaluated by an expert. The head frame (17) which comprises of integrated speaker and at least three surface electrodes to get a good contact on the above forehead (on the vertical axis) and on mastoid behind the ear (horizontal axis) and a convenient point on the baby which provides a good ground source on the body to detect waveform recordings. The head frame of the system enables quick and stable positioning of the electrodes, reduced length of the connecting wires from the electrodes to the signal amplification unit (10) reduces the impedance, and the loop formed between inverting electrode with ground and non- inverting electrode with ground being same balances the impedance which reduces the noise.