Operating Instructions
1
1 Introduction
The
ERO•SCAN
®
Pro test Instrument is indicated for testing cochlear and middle ear function in infants,
children, and adults by measuring otoacoustic emissions (OAEs), tympanometry, and acoustic reflex
(with optional external
Tymp•OAE
Probe
™
). The presence of otoacoustic emissions suggests normal
outer hair cell function, which in turn correlates to normal hearing. The presence of a normal
tympanogram suggests normal middle ear function and the presence of acoustic reflex responses at or
below 95 dB HL indicates normal inner hair cell function.
The
ERO•SCAN
Pro is intended to be used by hearing healthcare professionals (i.e. ENT doctors,
audiologists) and/or technicians, neonatal nurses and school nurses who have been trained by a hearing
healthcare professional.
1.1 Instrument Description
What is the
ERO•SCAN
Pro Instrument?
The
ERO•SCAN
Pro test instrument consists of the handheld unit, external probe(s), printer, single-use
eartips and other accessories. The
ERO•SCAN
Pro instrument may be used as a screening tool, or in
conjunction with conventional tests as part of a full diagnostic evaluation.
The ERO•SCAN
Pro instrument contains the
hardware and software for generating the test
stimuli, measuring and displaying test results, and
storing the results until they are printed or
downloaded to the PC software. The plastic
housing contains circuit boards that provide the
signal processing and display the test results. The
instrument also contains 4 AA/UM-3/R6 alkaline
batteries to power the device. The instrument uses
an organic LED display (OLED) and light-emitting
diodes (LEDs) to provide a visual display of test data
and test conditions to the operator. Two
membrane-type push buttons and a 4-way
navigation control located on the control panel of
the device allow the user to power the instrument
on and off, control testing, and initiate printing.
The probe sections of the instrument and external
probes house a microphone, two transducers, and
two speaker tubes which produce test stimuli and measure the sound pressure level (SPL) present in the
sealed ear canal.
Additionally, the combined Tymp•OAE Probe™ contains a m
echanical pump system
and pressure sensor to control and monitor air pressure variation in the ear canal. Each probe houses a
keypad with
two buttons (right and left) which can be used to start a test with the probe. LED’s on the
probe keypad indicate ear being tested and test status.
Interface of the instrument to the ear canal is accomplished through disposable eartips made of
industrial elastomer, which fit onto the probe tip. The disposable eartips are color coded to facilitate
easy selection by size.
How are the Results Stored and Reported?
When the
ERO•SCAN
Pro is set in its default settings, the instrument will store the results from one
patient (most recent left and right ear test for each available protocol) in its non-volatile memory for
Summary of Contents for Ero Scan Pro
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