OSCILLA T830, T840 User Manual

T830/T840

Screening Tympanometer

User Guide

Doc. No.7-50-1810-EN/03

Part No.7-50-18100-EN

Copyright notice

© 2016,2017Inmedico A/S.All rights reserved. Oscilla® is a registered trademark of Inmedico A/S inthe U.S.A. and/or other coun­tries.

Version release date

2017-10-31 (167384)

Technical support

Please contact your supplier.

Inmedico A/S - T830/T840

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Table of Contents

1 Overview

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2 Intended use

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3 Unpacking

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4 Installation

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5 The probe and the contralateral phone

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6 Tympanometry testing using the device

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7 Testing using the Oscilla® AudioConsole software

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8 Tympanometry testing using AudioConsole

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9 Device setup using AudioConsole

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10 Service, cleaning and calibration

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11 Technical specifications

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12 Standards and warnings

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13 Other references

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14 Manufacturer

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User Guide

Inmedico A/S - T830/T840

1 Overview

This User Guide describes the Oscilla® T830/T840 tympanometer.

T830/T840 tympanometer

T830/T840 is a screening tympanometer for conducting middle ear meas­urements on patients.

T830/T840 is an auditory impedance tester that is intended for changing the air pressure in the external auditory canal
and measuring and graphing the mobility characteristics of the tympanic membrane to evaluate the functional condition of
the middle ear.

T830/T840 uses technologies which are highly effective for diagnostic and screening purposes. Tympanometry and acoustic
reflex measurements measure the mechanical response of the middle ear and form a basis for evaluating whether the
related physiological structures are functioning correctly or not.

Operating the device

You can operate the device either as a stand-alone unit using the front panel buttons and display, or from the Oscilla®
AudioConsole PC software.

Note•If you are controlling the devicefrom the Oscilla®AudioConsole PC software, see the Oscilla®AudioConsole

User Manual.

Note•Oscilla®AudioConsole PC software is an optional accessory, which requires a license key. If you wish to use

AudioConsole, please contact your distributor.

Probes

The device supports the following probes:

• The test probe

• A contralateral phone or insert phone (T840 only)

Supported tests

The device supports the following tests:

• Tympanometry

• Ipsi- and contralateral reflex (contralateral: T840 only)

T830/T840 - Oscilla®AudioConsole interfacing

The device is designed to operate with the Oscilla®AudioConsole PC software.

From AudioConsole you can perform tests, monitor test results, store data, and print reports.

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User Guide

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Printing test results

The device can be connected to a printer (optional accessory) for printing test results.

When the device is used in connection with AudioConsole, test results can be printed either on the printer connected to
the device, or from the AudioConsole software.

2 Intended use

Measuring acoustic impedance/admittance in the human external acoustic meatus using a stated probe tone or other
probe signals.

Users: Audiologists, ENTs and other health care professionals with knowledge of immittance meas-

urements.

Use: Screening tympanometry and reflex measurements.

Patient population: Children (from 6 months of age) and adults.

Contraindications

Warning• If the patient is troubled by the test, stop the test. The test is interrupted immediately. Already measured

results are kept.

Warning• Look into the ear canal. It is strongly recommended that you perform an otoscopy to assess the status of

the outer ear before you insert the probe. If the ear canal is blocked, this may affect the result of the test. Clean the
ear canal if needed. Make sure that there is no residual fluid in the patient's ear after cleaning or wax removal.

Warning• Testing should not be performed on patients displaying the following symptoms without the approval of a

medical doctor:

• If there is discharge in the ear

• If the patient recently has undergone middle ear surgery

• If the ear canal is occluded

• If the patient suffers from acute trauma

• If the patient experiences severe discomfort

• If the patient displays symptoms of tinnitus or hyperacusis, in which case using excessively loud acoustic stimuli

for acoustic reflex measurements should be avoided.

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2.1 Typographical conventions

The use of Warning, Caution and Note

To draw your attention to information regarding safe and appropriate use of the device or software, the manual uses pre­cautionary statements as follows:

Warning• Indicates that there is a risk of death or serious injury to the user or patient.

Caution • Indicates that there is a risk of injury to the user or patient or risk of damage to data or the device.

Note•Indicates that you should take special notice.

3 Unpacking

1. Unpack the device carefully.
When you unpack the device and accessories, it is a good idea to keep the packing material in which they were
delivered. If you need to send the device in for service, the original packing material will protect against damage dur­ing transport, etc.

2. Visually inspect the equipment for possible damage.
If damage has occurred, do not put the device into operation. Contact your local distributor for assistance.

3. Check with the packing list to make sure that you have received all necessary parts and accessories. If your package is
incomplete, contact your local distributor.

4 Installation

To ensure safe performance of the device, make sure that the device is correctly installed and that the requirements listed
as warning notes are complied with.

See Warning notes ► 29.

Location

Caution • Storage or transportation at temperatures exceeding -20°C (-4°F) or +60°C (140°F) may cause permanent

damage to the device.

Testing is facilitated by a moderately quiet room. A sound cabin or sound treated room is not necessary.

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Probe

We recommend that you carry out a probe check daily to verify that the system measures correctly.

Powering

• See Powering the device ► 7.

Oscilla®AudioConsole

For a general introduction to Oscilla®AudioConsole, please see the Oscilla®AudioConsole User Manual (operator setup,
database management, reports and data import/export).

4.1 The connection panel

T830/T840

A. On/Off switch
B. PC/USB connection
C. Printer cable connection
D. External power supply
E. Contralateral phone (T840

only)

F. Probe air supply connection
G. Probe

4.2 Powering the device

The device is powered through an external power supply connected directly to the mains outlet.

Caution • Use only the power supply specified in Technical specifications ► 22.

Connecting the external power supply to the device

1. Connect the plug end of the external power supply cable to the external power supply socket on the
back of the device.

Connecting the external power supply to the mains supply

1. Connect the mains plug of the external power supply directly to an AC mains outlet.

2. If applicable, switch on the mains supply.

Switching the device on and off

1. To switch on the device, press the On/Off button on the back of the device.

– The display lights up.

2. To switch off the device, press the On/Off button.

If needed, switch off the mains supply and disconnect the power supply from the mains outlet.

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4.3 Connecting to the PC

To connect the device to the PC, you must install Oscilla® AudioConsole on the PC.

For instructions on installing AudioConsole, see the AudioConsoleUser Manual.

Caution • Use only the USB cable supplied with the device.

1. Connect the supplied USB cable from the USB socket on the back of the device to a USB socket on the
PC. The AudioConsole Windows automatically detects and installs the device.

When the device has been installed, AudioConsole detects the device and prompts you to enter the license key.

When the license key has been registered, the device is shown in the Instrument Manager in the lower left corner of the
AudioConsole screen.

4.4 Connecting the printer

1. Connect the supplied printer cable from the printer socket on the back of the device to the socket on
the printer.

5 The probe and the contralateral phone

Warning• Inspect the patient's ear. Look into the ear canal. It is strongly recommended that you perform an oto-

scopy to assess the status of the outer ear before you insert the probe. If the ear canal is blocked, this may affect the
result of the test. Clean the ear canal if needed. Make sure that there is no residual fluid in the patient's ear after
cleaning or ear wax removal.

Warning• The eartip can be used for both ears. If you suspect infection in one ear, use a clean eartip and probe tip

before you continue testing on the other ear.

Hygienic precautions

• Be sure to follow any established infection control procedures for the setting in which you are working.

• Always use clean eartips.

Warning• To prevent cross-infection, use new eartips when you test the next client.

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5.1 The probe

A. Probe tip
B. Probe body
C. Eartips (example)
D. Air connection plug
E. Probe connection plug

Connecting the probe

1. To connect the probe, insert the probe plug and the air connection plug into the probe socket
and air supply socket on the connection panel.

Using the probe

• Fitting the eartip on the probe ► 9

• Cleaning the probe and probe tip ► 19

Warning• Always fit an eartip on the probe before inserting it into the ear of the patient.

Warning• The eartip can be used for both ears. If you suspect infection in one ear, use a clean eartip and probe tip

before you continue testing on the other ear.

5.2 Fitting the eartip on the probe

1. Firmly push and twist the eartip onto the probe tip,
until it rests firmly against the base of the probe tip.

Removing the eartip

• To remove the eartip, grasp the stem of the eartip and pull the eartip straight off the probe tip.

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5.3 Fitting the probe in the patient's ear

1. Look into the ear canal. It is strongly recommended that you perform an otoscopy to assess the status of the outer ear
before you insert the probe.

2. If the ear canal is blocked, this may affect the result of the test. Clean the ear canal if needed.

Caution • The probe can be damaged if fluids enter the probe.

Warning• Never place the probe tip in the ear canal of a new patient without using a clean eartip.

Warning• The eartip can be used for both ears. If you suspect infection in one ear, use a clean eartip and probe tip

before you continue testing on the other ear.

Caution • Always use a suitably sized eartip. Using a probe with an unsuitably sized eartip or applying excessive force

may cause unnecessary discomfort to the patient.

Procedure

1. Fit the eartip on the probe.

2. To stabilize the probe and to avoid blocking the probe against the ear canal of the patient, grasp the pinna and gently
pull the pinna back and slightly away from the patient's head.

– For adults: pull the pinna upwards and back.

– For infants and children: pull the pinna downwards and back.

3. Insert the probe in the patient's ear canal while twisting the probe gently.

4. Make sure that the eartip fits well. This will minimize the risk of blocking the probe tip against the ear canal wall.

Probe status and leakage

The status indicator in the lower left corner of the device screen, or, if applicable, on the AudioConsole screen, will show
the status of the probe.

Text Description

Blocked

Indicates that probe tip is blocked (this may be caused by incorrect positioning of the probe in
the ear).

Leak

Indicates that the air seal between the probe and the ear is not tight.

5.4 The contralateral phone (T840 only)

If you wish to test for the contralateral reflex, use the contralateral phone to present the stimulus to the non-probe ear.

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User Guide

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