AT235 Instructions for Use - EN Page 1
1 Introduction
1.1 About this Manual
This manual is valid for the AT235 firmware version 1.8. (Model 1077).
The product is manufactured by:
Interacoustics A/S
Autiometer Allé 1
5500 Middelfart
Denmark
Tel.: +45 6371 3555
Fax: +45 6371 3522
E-mail: info@interacoustics.com
Web: www.interacoustics.com
1.2 Intended Use
The AT235 is an automatic impedance audiometer with built-in screening audiometry suited for screening, as
well as diagnostic work. Neonatal screening programs will particularly appreciate the presence of high probe
tone tympanometry, allowing more reliable tympanometric results in neonates.
The AT235 tympanometer is intended to be used by an audiologist, hearing healthcare professional, or
trained technician in a quiet environment.
1.3 Contraindications for performing impedance audiometry
• Recent stapedectomy or other middle ear surgery
• Discharging ear
• Acute external auditory canal trauma
• Discomfort (eg severe otitis externa)
• Occlusion of the external auditory canal
• Presence of tinnitus, hyperacusis or other sensitivity to loud sounds may contraindicate testing when
high intensity stimuli are used
Testing should not be performed on patients with such symptoms without a medical doctor’s approval.
Visual inspection for obvious structural abnormalities of the external ear structure and positioning as well as
the external ear canal should be performed before testing.
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