natus Echo-Screen III Pro - Page 19

© 2020 Natus Medical Incorporated 15 026057 RevE
Preparing for Testing Echo-Screen III Pro Instructions for Use
The earphone must completely enclose the external ear and form a good seal all the way
around. Avoid applying earphones to hair if possible. Ensure that the colored transducer is
in front of the patient’s ears.
Apply probe for TEOAE or DPOAE, or for ABR with OAE cable:
1 Select a disposable ear tip to fit the patient’s ear canal, and slide it onto the probe nozzle.
IMPORTANT: Only use ear tips designed for your Echo-Screen III probe and provided by
Natus Medical Incorporated.
IMPORTANT: When attaching and removing the ear tip, hold the housing of the probe and not
the probe cable.
IMPORTANT: For foam tips, do not pinch the foam while attaching the foam tip to the probe
nozzle.
2 Gently insert the probe into the patient’s ear canal, ensuring a snug, secure fit:
• If necessary, pull the external ear slightly backwards, similar to preparing for an
otoscopy.
• Compensate for spontaneous head movements by reducing the strain on the probe
cable: either form a big loop that is loosely held with one hand close to the head of the
patient, or use the cable clip and attach the clip to a surface close to the patient’s head
(such as to the patient’s clothing or to a baby’s blanket).
• Avoid possible contact of the cable with any vibrating or gliding surfaces during
measurement.
Note: You can use the same ear tip for both ears. However, if you suspect an infection in
the external auditory canal, change the ear tip before testing the other ear.
Note: If a probe error occurs, ensure that the probe nozzle grooves are free of debris and
that the probe is properly connected.
Example of foam tip placement
Example of tree tip placement
WARNING The probe nozzle must not be placed into the ear canal at any time without using a
proper ear tip.
Never apply pressure to the ear canal or compress the tragus (the prominence in
front of the external opening of the ear).
If a probe with an unsuitably sized ear tip is used, or if excessive force is applied, the
ear canal bay become irritated.