Operating Instructions MI 34 / MI 34 H
GEBAmi34e.11a.docx
5
850 232/14 08/11
2 Description
2.1 Purpose
The MI 34 is an automatic instrument designed for tympanometric
screening and diagnostic applications. The instrument performs automatic
impedance tests along with multi-frequency, multi-level reflex screening.
The MI 34 allows diagnostic testing of reflex decay and the Eustachian
Tube. Eustachian Tube function tests may be determined on patients with
intact or perforated eardrums.
The MI 34 H includes a high frequency probe tone of 1000 Hz which is
ideal for providing reliable results when testing newborns and young
children.
Test results are displayed on the front panel LCD screen and may be
printed.
2.1.1 PC-Interface:
An USB-interface for data transfer to a connected computer is built in.
The MAICO MI 34 is laid out according to the EN of 60 601-1
„medically electrical devices “. In order to ensure this also with
attached computer, the computer must correspond to the
EN 60 601-1. If not, please look to chapter 17.5 Patient safety.
2.1.2 Environmental conditions for the MI 34
The MI 34 should be operated in a quiet room.
The test room must be at normal temperature, usually 15 C / 59 F to 35 C /
95 F, and the instrument should be switched on about 10 minutes before
the first measurement to guarantee precise measuring results. If the device
has been cooled down (e.g. during transport), please wait until it has
warmed up to room temperature.
2.2 Tympanometry
Tympanometry is the objective measurement of middle ear mobility
(compliance) and pressure within the middle ear system. During the test, a
low-pitched probe tone (226 Hz) is presented to the ear canal by means of
