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Auditory Intranerve Stimulation Perceptual Study (ANI-NIH)

24. august 2026 opdateret af: Hannover Medical School

Scientific Assessment of Auditory Intranerve Stimulation Loudness and Pitch Percepts

The objective of this scientific study is to evaluate the feasibility of direct auditory nerve stimulation to elicit key percepts, specifically loudness and frequency/pitch percepts in three deaf patients participants with the new auditory nerve implant (ANI). During the year with temporary stimulation of the auditory nerve, patients participants are expected to participate for 14 months, consisting of: two months for surgery for the nerve implant and healing phase, one month initial follow-up, ten months of follow-up care and study testing, and one month for explanation and post-operative observation.

Studieoversigt

Status

Rekruttering

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

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.

Undersøgelsestype

Interventionel

Tilmelding (Anslået)

5

Fase

  • Ikke anvendelig

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiekontakt

  • Navn: Hubert Lim, Prof.
  • Telefonnummer: +16126264565
  • E-mail: Hlim@umn.edu

Studiesteder

      • Hanover, Tyskland, 30625
        • Rekruttering
        • Hannover Medical School
        • Kontakt:
        • Underforsker:
          • Rolf Salcher, Dr.
        • Underforsker:
          • Max Timm, Dr
        • Underforsker:
          • Waldo Nogueira, Prof.
        • Underforsker:
          • Karl-Heinz Dyballa, Dr.
        • Ledende efterforsker:
          • Thomas Lenarz, Prof.
      • Hanover, Tyskland, 30625
        • Aktiv, ikke rekrutterende
        • Service provider for the performance of surgical procedures: International Neuroscience Institute

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

  • Voksen
  • Ældre voksen

Tager imod sunde frivillige

Ingen

Beskrivelse

Inclusion Criteria:

  1. Age ≥18 and ≤85 years
  2. Written informed consent
  3. 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
  4. Eligible for routine auditory brainstem implant (ABI) where patientparticipants would undergo more invasive brainstem surgery than the ANI surgery
  5. Functional auditory nerve and central auditory pathway
  6. Post-linguistic onset of ipsilateral severe-to-profound hearing loss
  7. The contralateral ear has sufficient vestibular function
  8. 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:

  1. Medical, neurological, or psychological conditions that would contraindicate undergoing surgery, e.g. depression, acute cardiac infarction, history of stroke, dementia, epilepsy
  2. Additional handicaps that would prevent participation in evaluations
  3. Women able to become pregnant
  4. Pregnant women
  5. Persons who are deprived of their liberty on the basis of an official order or a court order or authorization
  6. 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) )
  7. Other active devices with potential interference with the auditory nerve implant
  8. Presence of anatomic abnormalities that would prevent appropriate placement of the stimulator housing in the bone of the skull
  9. 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

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Enhedens gennemførlighed
  • Tildeling: N/A
  • Interventionel model: Enkelt gruppeopgave
  • Maskning: Ingen (Åben etiket)

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: 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.
The investigational research device consists of a speech processor worn on the ear and an implant body with an electrode array.

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Pitch perception performance of ANI
Tidsramme: 12 months
Systematic place pitch ordering maintained on month 12
12 months

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Loudness perception performance of ANI
Tidsramme: 12 months
Collection of loudness growth functions (LGFs) across single electrodes that have a dynamic range greater than 6 dB and maintained on month 12
12 months

Andre resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Frequency Resolution
Tidsramme: 12 months
Minimum frequency specificity (i.e., current spread) of electrodes is narrower than 0.8 mm in bandwidth maintained on month 12
12 months
Position of ANI electrode array in auditory nerve
Tidsramme: 12 months
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.
12 months
Collection of adverse events
Tidsramme: 12 months
Collection of adverse events during the evaluation period
12 months

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

Efterforskere

  • Ledende efterforsker: Thomas Lenarz, Prof., Hannover Medical School
  • Ledende efterforsker: Amir Samii, Prof., International Neuroscience Institute Hannover

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart (Anslået)

1. august 2026

Primær færdiggørelse (Anslået)

29. februar 2028

Studieafslutning (Anslået)

29. februar 2028

Datoer for studieregistrering

Først indsendt

12. august 2026

Først indsendt, der opfyldte QC-kriterier

24. august 2026

Først opslået (Faktiske)

27. august 2026

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

27. august 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

24. august 2026

Sidst verificeret

1. august 2026

Mere information

Begreber relateret til denne undersøgelse

Andre undersøgelses-id-numre

  • 0000509678
  • No.11979-BO-MPDG-M-2025 (Anden identifikator: Ethics committee Hannover Medical School)

Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter

Studerer et amerikansk FDA-reguleret lægemiddelprodukt

Ingen

Studerer et amerikansk FDA-reguleret enhedsprodukt

Ingen

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