Operating Instructions
11
4.3 Selecting a Protocol or Protocol Series
Protocols are individual DPOAE, TEOAE, tympanometry or acoustic
reflex measurements. Protocol series are a sequence of individual
protocols linked together. A series can be composed of any
combination of DPOAE, TEOAE, tympanometry or acoustic reflex
protocols that are loaded into the instrument. The series will run
with just one button press (left/right arrow on control panel or R/L
button on probe) to begin testing. Series are indicated by
multiplicity symbol to the left of the Series name.
Each instrument comes preloaded with protocols and protocol series. For a description of the protocols
and series included see Appendix B. For information on creating and customizing protocol series see
section 9.
The protocol selected will default to the last protocol or series used to conduct a measurement. This
makes it easy to switch to the other for testing. To select a different protocol or series use the up and
down arrows on the navigator located on the instrument control panel.
4.4 Selecting an Eartip
The
ERO•SCAN
Pro instrument comes with a box of disposable eartips that fit a variety of ear canal
sizes. The probe tip must have an eartip attached before inserting it into an ear canal. The eartip kit has
12 different size eartips that are color-coded for easy selection. The determination of the appropriate
eartip size should be made by persons with proper training and experience. The eartip must seal the ear
canal. The best test results are obtained when the eartip is inserted deeply into the ear canal instead of
flush with the ear canal opening. The fit should be secure so that the probe will remain in the ear canal
even with a light tug on the probe.
Caution must be taken, however, to ensure that the eartip does not extend too deeply into the ear
canal. Use only the eartips approved for use with the instrument. Contact your local special equipment
distributor or Maico Diagnostics for ordering information. The eartips are disposable and should be
replaced after each patient. Do not attempt to clean or reuse these eartips.
After selecting an eartip, push it onto the probe tip until it is flush against the base of the probe tip. The
sound outlet tubes on the probe tip are recessed to minimize the likelihood of clogging. If the probe tip
does become plugged or clogged, it must be replaced. See section 11 on care and maintenance for
further information. To remove the eartip, grasp the eartip at the base and twist it while pulling it
straight off the end of the probe tip.
4.5 Preparing the Patient
When
possible, otoscopic or visual examination of the patient’s ear c
anals should be performed prior to
testing. Excessive cerumen or vernix in the ear canals may interfere with the test and give invalid or
incomplete results. Patients with excessive cerumen, debris, or foreign bodies in the ear canals should be
referred to an audiologist or physician for removal of the blockage prior to testing.
Place the patient in a position that will allow easy access to the patient
’
s ears. The patient should remain
still and quiet while the test is being performed.
Explain to the patient that the measurement is painless. The patient does not have to respond when
there are loud test sounds or when the pressure in the auditory canal changes. The patient should be
instructed not to swallow, chew or move during the measurement.
Summary of Contents for Ero Scan Pro
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