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Auditory Intranerve Stimulation Perceptual Study (ANI-NIH)
Scientific Assessment of Auditory Intranerve Stimulation Loudness and Pitch Percepts
Studie Overzicht
Toestand
Conditie
Interventie / Behandeling
Gedetailleerde beschrijving
The auditory nerve implant (ANI) targets the auditory nerve directly between the cochlea and the brainstem, whereas current implants like the cochlear and brainstem implants stimulate the cochlea or brainstem, respectively. By providing direct stimulation within the auditory nerve, a nerve implant offers a better electrode-nerve interface and may achieve improved hearing compared to a cochlear or brainstem implant. Preliminary results in animals, computer simulations, and acute clinical studies showed significantly better performance compared to other hearing aidsoptions. This study aims to investigate the extent to which these benefits are perceptible in the human auditory nerve.
The primary goal of this study is to gain scientific insight into the hearing experience with the direct auditory nerve stimulation. However, the results could contribute to the development of new hearing implants that directly stimulate the auditory nerve.
Studietype
Inschrijving (Geschat)
Fase
- Niet toepasbaar
Contacten en locaties
Studiecontact
- Naam: Hubert Lim, Prof.
- Telefoonnummer: +16126264565
- E-mail: Hlim@umn.edu
Studie Locaties
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Hanover, Duitsland, 30625
- Werving
- Hannover Medical School
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Contact:
- Karl-Heinz Dyballa
- Telefoonnummer: +4917615328589
- E-mail: dybala.karl-heinz@mh-hannover.de
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Onderonderzoeker:
- Rolf Salcher, Dr.
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Onderonderzoeker:
- Max Timm, Dr
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Onderonderzoeker:
- Waldo Nogueira, Prof.
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Onderonderzoeker:
- Karl-Heinz Dyballa, Dr.
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Hoofdonderzoeker:
- Thomas Lenarz, Prof.
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Hanover, Duitsland, 30625
- Actief, niet wervend
- Service provider for the performance of surgical procedures: International Neuroscience Institute
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Deelname Criteria
Geschiktheidscriteria
Leeftijden die in aanmerking komen voor studie
- Volwassen
- Oudere volwassene
Accepteert gezonde vrijwilligers
Beschrijving
Inclusion Criteria:
- Age ≥18 and ≤85 years
- Written informed consent
- Bilateral deafness with cochlea that does not allow the implantation of a cochlear implant (CI). This can include ossification, malformation of cochlea; poor CI performers (lowest quartile of CI performance); and patientparticipants with facial nerve stimulation using a CI which is not manageable without reduction of performance
- Eligible for routine auditory brainstem implant (ABI) where patientparticipants would undergo more invasive brainstem surgery than the ANI surgery
- Functional auditory nerve and central auditory pathway
- Post-linguistic onset of ipsilateral severe-to-profound hearing loss
- The contralateral ear has sufficient vestibular function
Women not able to become pregnant*
Women not able to become pregnant defined as follows:
- at least 6 weeks after surgical sterilization by bilateral tubal ligation or bilateral oophorectomy or
- hysterectomy or uterine agenesis or
- ≥ 50 years and in postmenopausal state > 1 year or
- < 50 years and in postmenopausal state > 1 year with serum FSH > 40 IU/l and serum estrogen < 30 ng/l or a negative estrogen test, both at screening
Exclusion Criteria:
- Medical, neurological, or psychological conditions that would contraindicate undergoing surgery, e.g. depression, acute cardiac infarction, history of stroke, dementia, epilepsy
- Additional handicaps that would prevent participation in evaluations
- Women able to become pregnant
- Pregnant women
- Persons who are deprived of their liberty on the basis of an official order or a court order or authorization
- Known allergies to one of the components of the implant (medical grade silicone, Parylene-C, Iridium oxide, Platinum-Iridium alloy (PtIr 10) and (PtIr 20) )
- Other active devices with potential interference with the auditory nerve implant
- Presence of anatomic abnormalities that would prevent appropriate placement of the stimulator housing in the bone of the skull
- Additionally, in the event of other health issues, the investigators will decide on a case-by-case basis whether to enroll the patientparticipant in the study
Studie plan
Hoe is de studie opgezet?
Ontwerpdetails
- Primair doel: Toestel Haalbaarheid
- Toewijzing: NVT
- Interventioneel model: Opdracht voor een enkele groep
- Masker: Geen (open label)
Wapens en interventies
Deelnemersgroep / Arm |
Interventie / Behandeling |
|---|---|
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Experimenteel: Experimental: Direct Auditory Nerve Stimulation
Patients Participants will be implanted with an Auditory Nerve Implant (ANI) for one year to evaluate key perceptual measures of temporary direct auditory nerve stimulation.
Safety and efficacy will also be evaluated, as well as different speech perception capabilities.
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The investigational research device consists of a speech processor worn on the ear and an implant body with an electrode array.
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Wat meet het onderzoek?
Primaire uitkomstmaten
Uitkomstmaat |
Maatregel Beschrijving |
Tijdsspanne |
|---|---|---|
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Pitch perception performance of ANI
Tijdsspanne: 12 months
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Systematic place pitch ordering maintained on month 12
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12 months
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Secundaire uitkomstmaten
Uitkomstmaat |
Maatregel Beschrijving |
Tijdsspanne |
|---|---|---|
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Loudness perception performance of ANI
Tijdsspanne: 12 months
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Collection of loudness growth functions (LGFs) across single electrodes that have a dynamic range greater than 6 dB and maintained on month 12
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12 months
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Andere uitkomstmaten
Uitkomstmaat |
Maatregel Beschrijving |
Tijdsspanne |
|---|---|---|
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Frequency Resolution
Tijdsspanne: 12 months
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Minimum frequency specificity (i.e., current spread) of electrodes is narrower than 0.8 mm in bandwidth maintained on month 12
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12 months
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Position of ANI electrode array in auditory nerve
Tijdsspanne: 12 months
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Evaluation of the final position of the ANI electrode array.
The number of electrodes eliciting auditory activation will be measured.
The stability of the percepts elicited will also be measured.
Both of these measurements provide the stability of the electrode array implanted within the auditory nerve.
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12 months
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Collection of adverse events
Tijdsspanne: 12 months
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Collection of adverse events during the evaluation period
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12 months
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Medewerkers en onderzoekers
Sponsor
Onderzoekers
- Hoofdonderzoeker: Thomas Lenarz, Prof., Hannover Medical School
- Hoofdonderzoeker: Amir Samii, Prof., International Neuroscience Institute Hannover
Studie record data
Bestudeer belangrijke data
Studie start (Geschat)
Primaire voltooiing (Geschat)
Studie voltooiing (Geschat)
Studieregistratiedata
Eerst ingediend
Eerst ingediend dat voldeed aan de QC-criteria
Eerst geplaatst (Werkelijk)
Updates van studierecords
Laatste update geplaatst (Werkelijk)
Laatste update ingediend die voldeed aan QC-criteria
Laatst geverifieerd
Meer informatie
Termen gerelateerd aan deze studie
Aanvullende relevante MeSH-voorwaarden
Andere studie-ID-nummers
- 0000509678
- No.11979-BO-MPDG-M-2025 (Andere identificatie: Ethics committee Hannover Medical School)
Informatie over medicijnen en apparaten, studiedocumenten
Bestudeert een door de Amerikaanse FDA gereguleerd geneesmiddel
Bestudeert een door de Amerikaanse FDA gereguleerd apparaatproduct
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