Maico MI 24, Operating Instructions Manual

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Operating Instructions MI 24, MI 24h
17
4.2 Preparing the patient
Explain to the patient that the measurement is painless and that nothing enters the
auditory canal. The patient does not have to respond when there are loud test
sounds or when the pressure in the auditory canal changes. In no case should the
patient swallow, chew or move during the measurement.
4.3 Preparing the measurement
The LCD shows the empty measurement screen for the right ear and the control light
of the probe turns red. To measure the left ear, change the side by pressing the
L/R
key or the probe button . Then the selected test ear shown in the middle-top of
the LCD will change from
Right to Left and the control light of the probe will turn
blue. Switch off the reflex measurement by pressing the
Reflex
key .
The word Tympanometry must appear at the right top of the display. Make sure the
auditory canal is clear. Choose an ear tip according to the size of the auditory canal
and put it firmly onto the probe tip (see figure 9 in chapter 3.7).
4.4 Measuring the tympanogram
Take hold of the top of the outer ear and pull it back. Insert the probe with the ear
tip into the auditory canal until
the control light of the probe is
green indicating the start of the
test. Do not move the probe until
the green light goes out; the
patient must not swallow or
speak during the measurement.
During the test the LCD will
display the tympanogram on the
left side as the test is running
and then the values will appear
on the right side. After about 4-5
seconds the test is completed
and the green light turns off.
Now you can remove the probe
from the ear.
If an error occurs during the measurement the test will stop. If leakage occurs, the
control light of the probe turns yellow and
Leaking
will appear under
Status.
If the
probe is blocked, the control light of the probe turns yellow and Blocked will appear
under Status . Please proceed as described in chapter 3.6 “Getting familiar with the
probe.” To measure the other ear, change the side by pressing the L/R key or the
probe button

and repeat the measuring procedure described above with the other
ear.
Status
READY
Ear Volume
Compliance
Pressure
Gradient
Impedance Tympanometer Right
ml
3
2
1
0
-600 -300 300 daPa
Scale
Figure 13
Measurement screen (only tympanogram)
M
3