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Dirty microphones may muffle cochlear implants, study finds

NCT ID NCT02369718

Knowledge-focused Sponsor: Hospices Civils de Lyon Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 25, 2026 · Last updated Jun 26, 2026 · Updated 1 time

Summary

This study looked at how cochlear implant microphones change as they age and get dirty, and whether different signal coding strategies can help. Researchers tested 81 people with hearing loss by having them listen to words in noise at various levels, before and after cleaning the microphone. The goal was to understand how microphone condition affects speech understanding.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

What this could lead to
If successful, this could help improve cochlear implant design and maintenance recommendations to preserve hearing quality over time.
What could go wrong
This is a small, completed observational study with 81 participants, so results may not apply to all implant users. It does not test a new treatment.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

81 people

The number who actually took part.

Start date

Nov 2014

Finished

Apr 2016

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

18 to 60 years

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * French speaking persons (French native speakers; studies made in French) * Ear, Nose and Throat (ENT) tests and check up for normal hearing listeners were normal (Hearing loss below 20 dBs for all frequencies situated in the 250-8000 Hz range) * Not mentally retarded Exclusion Criteria: * Persons with tinnitus or headache * Anxious people (taking psychiatric drugs) * Mental alteration or mental retard * Deafened persons or taking an ENT treatment (normal hearing listeners)

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Conditions

The condition(s) this trial relates to.

hearing loss disorder

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Hard of hearing

Contacts and locations

Locations

  • Pavillon ORL (U) - Hôpital Edouard Herriot

    Lyon, 69437, France

More trials for these conditions

Other studies related to the condition(s) this trial covers.