GSI Novus™ Newborn Hearing Screening System User Manual
D-0113050 Rev H
Page 70 of 96
I
NFANT
E
AR
S
IMULATOR
The Infant Ear-Simulator accessory may be used to perform a quality check of the
Novus that has the OAE option. This can be done on a regular basis or may be
performed if you suspect a problem with the Novus hardware or OAE probe.
The Infant Ear Simulator is a cavity specifically designed to mimic the acoustic
absorbance properties of a real infant ear including the ear canal and middle ear. Other
methods to assess probe performance use a hard-walled cavity. It is well known that a
hard-walled cavity does not reflect the properties of an infant ear. Testing this way can
produce false responses due to the resonance characteristics of the hard-walled cavity,
making it difficult to assess how accurately the probe will perform in a real infant ear.
Using the Infant Ear Simulator, it is possible to perform an OAE probe quality check in a
realistic test cavity.
1.
Attach a clean disposable eartip of the smallest size to your OAE probe.
2.
Insert the probe with eartip into the Infant Ear Simulator.
3.
Perform a standard OAE screening.
4.
The screening outcome should be a Refer.
If the screening outcome is a Pass, contact your distributor to replace or repair your
probe.
