ClinicalTrials.gg
Not yet recruitingNCT07648615EESPITUpdated Jun 15, 2026

Efficacy of a Tinnitus Implant for People With Severe Tinnitus Without Damaging the Acoustic Hearing.

An interventional study of Extracochlear stimulation in Tinnitus, sponsored by ENTIC research and training centre of the European Institute for ORL. Not yet recruiting. Open to participants aged 18 Years to 110 Years. Per ClinicalTrials.gov, last updated 2026-06-15.

Sponsored by ENTIC research and training centre of the European Institute for ORL · Not applicable, Interventional, and Treatment

Phase
Not applicable
Study type
Interventional
Enrollment
6
Allocation
Not applicable
Ages
18 Years to 110 Years
Sex
All
01

Study summary

This is a prospective, intervention-based, non-randomized, pre-post, single-site feasibility study that will involve data collection from individuals with intractable tinnitus. The study comprises a screening under local anesthesia and a surgery to implant the medical device. The screening will allow for accurate selection of patients. For patients not fulfilling the criteria for chronic extracochlear stimulation, the study will stop there. Patients eligible for chronic stimulation will undergo a second surgery under general anaesthesia involving the implantation of a cochlear implant with an electrode placed outside the cochlea in the vicinity of the round window. Each surgical procedure will be followed by a series of medical check-ups. Following implantation, the safety and efficiency of extracochlear chronic stimulation will be evaluated as well as the tinnitus suppression and speech perception.

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Conditions studied

  • Tinnitus

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03

In context

Tinnitus

444 studies on the registry are indexed under Tinnitus; 98 are open to participants now.

This study's planned enrollment of 6 is below the median of 60 across 368 interventional studies indexed under Tinnitus.

Browse Tinnitus studies →

Lead sponsor

This is the only study on the registry with ENTIC research and training centre of the European Institute for ORL as lead sponsor.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
18 Years to 110 Years
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Age ≥ 18 years
  • Proficient in written and spoken Dutch, defined by self-report or the researcher
  • Intractable severe/uncompensated unilateral tinnitus, evaluated by VAS-score, and confirmed by Tinnitus functionality Index (TFI) and Tinnitus Questionnaire (TQ) (global TFI score of 54 and above and global TQ-score of 47 and above)
  • Suffering from tinnitus for at least a year
  • Not responsive to the normally available clinical tinnitus treatment.
  • High-frequency sensorineural hearing loss in the ear to be treated
  • Hearing aid did not provide any tinnitus suppression
  • Ability to use the device and follow a personalized rehabilitation program.
  • Ability to undergo the surgery

Exclusion criteria

Exclusion Criteria:

  • Chronic middle ear pathology
  • Surgical anatomy not allowing for implantation, evaluated by CBCT/MRI imaging
  • Tinnitus suppression is possible to achieve with hearing aids (as per self-report/documentation)
  • depression (HADS-score of 11 and above)
  • Active treatment, or treatment in the past 6 months, with either a chemotherapeutic drug for cancer, or radiation therapy to the head or neck region
  • Pregnant or breastfeeding women
  • Current participation in another interventional clinical study/trial in the past 30 days involving an drug or device.
  • Medical to middle ear surgery, and/or anesthesia
  • Cholesteatoma in the ear to be treated
Terms in these criteria, in plain language(3)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Clinically significant

Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.

Investigational drug or device

A drug or device being studied in a clinical trial.

It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.

Contraindication

A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.

05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
6 participants (estimated)

Study arms

  • Experimental
    Extracochlear stimulation

    Implanted extracochlearly with a cochlear implant - active implantable medical device.

    Device: Extracochlear stimulation

Interventions

  • DeviceExtracochlear stimulation

    The study will implant a cochlear implant extracochlearly, near the round window.

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What researchers measure

Primary outcomes

  1. Number of participants with treatment-related adverse events

    The primary objective of this clinical feasibility study is to evaluate safety of the cochlear implant system when implanted extracochlear, near the round window. The number of adverse events in each participant will be reported.

    Time frame: 12 months post-operatively

  2. Hearing loss

    The primary objective of this clinical feasibility study is to evaluate safety, and usability of the cochlear implant system when implanted extracochlear, near the round window. This includes no major deterioration of hearing thresholds. Hearing thresholds will be measured by pure tone audiometry.

    Time frame: 12months postoperatively

  3. Tinnitus suppression

    Demonstrate the efficiency of extracochlear electrical stimulation for tinnitus suppression after 6 and 12 months after chronic extracochlear electrical stimulation.The change in self-reported tinnitus severity after 12 months of chronic extracochlear electrical stimulation evaluated with the VAS-scores for tinnitus intensity and annoyance, and the TQ and TFI questionnaires.

    Time frame: 6 months and 12 months

Secondary outcomes

  1. speech perception in quiet and in noise

    Evaluate the effect on speech perception and sound quality of extracochlear electrical stimulation in the region of the round window at 12 months after implantation of the device.

    Time frame: 12 months

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Study locations

No study locations are listed for this record.

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References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

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Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Start is estimated for Sep 2026; primary completion for Sep 2028, 24 months later.

Of 133 non-industry interventional studies with no phase under Tinnitus, half reached primary completion within 17 months of starting (the median), counting those still running; a quarter within 10 and three quarters within 38. This study's planned 24 months is above that.

Counting every sponsor, half of 151 studies reached it within 17 months; a quarter within 10 and three quarters within 36.

How these figures are worked out, and which studies are left out of them.

Registered
Jun 3, 2026
First posted
Jun 15, 2026
StartEst.
Sep 1, 2026
Primary completionEst.
Sep 1, 2028
CompletionEst.
Sep 1, 2028
Last update
Jun 15, 2026
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Jun 15, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT07648615
Lead sponsor
ENTIC research and training centre of the European Institute for ORL
Responsible party
Sponsor
First posted
Jun 15, 2026
Start date
Sep 1, 2026 (estimated)
Primary completion
Sep 1, 2028 (estimated)
Completion
Sep 1, 2028 (estimated)
Last update
Jun 15, 2026

Study contacts

Mira Van Wilderode, PhD
Contact
mira.vanwilderode@eiorl.be
003232906000
Andrzej Zarowski, MD
Contact
andrzej.zarowski@me.com
003232906000

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is not yet recruiting, as verified in Jun 2026. You cannot join it, but the record below documents what was studied.

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