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The Grason-Stadler Inc. model GSI 70 AudioPath™ Hearing Screener is similar to and predicated upon the Grason-Stadler Inc. model GSI 60 Otoacoustic Emissions/Screening Audiometer, the GSI 37 Auto Tymp Middle Ear Analyzer, and the GSI 17 Pure Tone Screening Audiometer. The purpose of this device is to detect as well as track hearing loss and abnormal middle ear conditions in all ages of patients (from premature infants through adults). The instrument has combined a battery of testing capabilities such as Otoacoustic Emission Screening, Tympanometry, and Pure Tone Audiometry within one hand held instrument. The device is intended to be used by trained personnel within a medical or school environment. This device is not intended for use in prescribing or fitting assistive listening devices such as hearing aids, cochlear implants or wireless microphones, or to diagnose the causes of detected hearing losses.

The Grason-Stadler Inc. model GSI 70 AudioPath™ Screener is similar to and predicated upon the Grason-Stadler Inc. model GSI 60 Otoacoustic Emissions/Screening Audiometer, the GSI 37 Auto Tymp Middle Ear Analyzer, and the GSI 17 Pure Tone Screening Audiometer. The purpose of this device is to detect as well as track hearing loss and abnormal middle ear conditions in all ages of patients (From premature infants through adults age). The instrument has a battery of testing capabilities such as Otoacoustic Emission Screening, Tympanometry, and Pure Tone Audiometry. The device is intended to be used by trained personnel in a medical or school environment. This device is not intended for use in prescribing or fitting assisstive listening devices such as hearing aids, cochlea implants or wireless microphones.

The Grason-Stadler Inc. model GSI SA60 Otoacoustic Emissions/Screening Audiometer is similar to and predicated upon the Grason-Stadler Inc. model GSI 60 Otoacoustic Emissions/Screening Audiometer. The GSI SA60 is to be used as part of an audiometric test battery. The purpose of this device is to assess the status of cochlear function by presenting an acoustic stimulus (i.e. the primary tone pair) to evoke an otoacoustic emission (i.e. the distortion product) which is measured. The GSI 60 and the GSI SA60 utilize a probe containing a microphone and two (2) independent speakers (one for each primary tone) to present the acoustic stimulus and measure for the presence of an evoked otoacoustic emission.

The Grason-Stadler Inc. model GSI SA60 Otoacoustic Emissions/Screening Audiometer is similar to and predicated upon the Grason-Stadler Inc. model GS1 60 Otoacoustic Emissions/Screening Audiometer. The GSI SA60 is to be used as part of an audiometric test battery. The purpose of this device is to assess the status of cochlear function by presenting an acoustic stimulus (i.e. the primary tone pair) to evoke an otoacoustic emission (i.e. the distortion product) which is measured. The GSI 60 and the GSI SA60 utilize a probe containing a microphone and two (2) independent speakers (one for each primary tone) to present the acoustic stimulus and measure for the presence of an evoked otoacoustic emission.