User's Manual

When conducting audiometry tests, the presence of a transducer

that has not be calibrated will be flagged by the software. It will

not be possible to present any stimulus to the patient using

transducers that have not been calibrated.

Take note of the calibration interval indicated for the

audiometer and the REM probes. Use of the instrument beyond

the calibration interval expiry date can lead to unreliable

diagnoses.

1.4.3 Hygiene and infections

The earpieces of ER-3C earphones are disposable; do not use

the same earpiece for different patients. Dispose of earpieces

after use.

Disinfect the cushions of headphones between one patient and

the next, otherwise there is the risk that infections could be

passed on.

The silicone tubes connected to the microphone of REM probes

are disposable; do not use the same tubes for different patients,

as there is the risk that infections could be passed on. Dispose

of tubes after use.

Probe tubes can be reused for the same patient: clean using a

cloth moistened lightly with alcohol before inserting into the

ear. Check also that there are no obstructions internally of the

tube: if the bore is not completely clear, use a new tube.

Use only biocompatible silicone tubes supplied by Inventis srl.

An ear inspection must always be performed before inserting

the probe tube, to make certain that the auditory canal is free of

any obstruction caused by accumulations of wax, and that there

is no inflammation or possible infection.

1.4.4 Avoiding discomfort for the patient

The Trumpet is capable of generating pure tones at an intensity potentially

harmful to the patient (up to 90-100 dB SPL). Take particular care over the

intensity of the tone before presenting it: studies have shown that exposure

to a sound reaching the auditory canal at an intensity greater than or equal to

85 dB SPL for more than 7 hours can result in damage to hearing, but if