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Retrospective Analysis of Performance and Safety of MED-EL Cochlear Implants. (BELPS)

7 september 2026 bijgewerkt door: MED-EL Elektromedizinische Geräte GesmbH

Bern Long-term Performance and Safety of MED-EL Cochlear Implants: a Retrospective Anonymized Analysis of Existing Data From the Local Clinical Database

This study is a single center, non-interventional, retrospective, post-market observational study. Data will be extracted retrospectively from the local clinical database of the site and will be fully anonymized. The data extraction is performed as a one-time process. Following the analysis of the extracted dataset, the study is considered complete.

The study does not foresee any active participation of patients or seeking for consent.

This retrospective anonymized database analysis is performed on all MED-EL cochlear implants registered in the local database of the Department of Otolaryngology, Head and Neck Surgery, Audiology, Inselspital, University of Bern.

The aim of this project is to generate evidence on the clinical effectiveness of cochlear implants based on long term real-world data gathered from clinical routine across a large and diverse population.

Assessed performance outcome measures include word test in quiet results, speech perception in noise results, and patient related outcome measures/questionnaires, as available. Safety assessment is based on data related to revision surgeries, explantations, reimplantations, and any other recorded device related complications. Imaging data (X-ray, CT, MRI) are not used in this study.

Studie Overzicht

Toestand

Nog niet aan het werven

Conditie

Interventie / Behandeling

Gedetailleerde beschrijving

This study is a single center, non-interventional, retrospective, post-market observational study. Data will be extracted retrospectively from the local clinical database of the site and will be fully anonymized. The data extraction is performed as a one-time process. Following the analysis of the extracted dataset, the study is considered complete.

The study does not foresee any active participation of patients or seeking for consent.

This retrospective anonymized database analysis is performed on all MED-EL cochlear implants registered in the local database of the Department of Otolaryngology, Head and Neck Surgery, Audiology, Inselspital, University of Bern.

The aim of this project is to generate evidence on the clinical effectiveness of cochlear implants based on long term real-world data gathered from clinical routine across a large and diverse population.

Assessed performance outcome measures include word test in quiet results, speech perception in noise results, and patient related outcome measures/questionnaires, as available. Safety assessment is based on data related to revision surgeries, explantations, reimplantations, and any other recorded device related complications. Imaging data (X-ray, CT, MRI) are not used in this study.

Studietype

Observationeel

Inschrijving (Geschat)

700

Contacten en locaties

In dit gedeelte vindt u de contactgegevens van degenen die het onderzoek uitvoeren en informatie over waar dit onderzoek wordt uitgevoerd.

Studiecontact

Studie Contact Back-up

Studie Locaties

  • Zwitserland
      • Bern, Zwitserland, 3010
        • Inselspital, Universitätsspital Bern, Department of Otolaryngology, Head and Neck Surgery, Audiology
        • Contact:
        • Contact:
        • Hoofdonderzoeker:
          • Martin Kompis, Prof. Dr. med. Dr. sc. techn.
        • Onderonderzoeker:
          • Christoph Schmid

Deelname Criteria

Onderzoekers zoeken naar mensen die aan een bepaalde beschrijving voldoen, de zogenaamde geschiktheidscriteria. Enkele voorbeelden van deze criteria zijn iemands algemene gezondheidstoestand of eerdere behandelingen.

Geschiktheidscriteria

Leeftijden die in aanmerking komen voor studie

  • Kind
  • Volwassen
  • Oudere volwassene

Accepteert gezonde vrijwilligers

Nee

Bemonsteringsmethode

Niet-waarschijnlijkheidssteekproef

Studie Bevolking

The study population includes all patients registered in the sites local database who were implanted with an approved MED-EL cochlear implant at the investigational site since 01st January 1996. To be included for analysis data from the pre-operative assessment and from at least one post-operative assessment must be available.

Beschrijving

Inclusion Criteria:

  • Implanted with a MED-EL cochlear implant
  • First implantation at Inselspital Bern
  • Implanted later than 31st December 1995

Exclusion Criteria:

  • Lack of compliance with any inclusion criteria
  • Patients implanted with either a custom-made device or with a study device prior CE-marking

Studie plan

Dit gedeelte bevat details van het studieplan, inclusief hoe de studie is opgezet en wat de studie meet.

Hoe is de studie opgezet?

Ontwerpdetails

Cohorten en interventies

Groep / Cohort
Interventie / Behandeling
MED-EL cochlear implant recipients
The cohort includes all patients registered in the sites local database who were implanted with an approved MED-EL cochlear implant at the investigational site since 01st January 1996. To be included for analysis data from the pre-operative assessment and from at least one post-operative assessment must be available.
Apparaat: Cochlear implantation
The cochlear implant (CI) is one of the most successful neural prostheses developed to date. It offers artificial hearing to individuals with profound sensorineural hearing loss and with insufficient benefit from conventional hearing aids. The first implants provided a limited sensation of sound. The benefit for users of these early systems was mostly a facilitation of lip-reading based communication rather than an understanding of speech. Considerable progress has been made since then. Today, cochlear implantation is the recommended treatment for subjects presenting with a permanent sensorineural hearing loss. Modern, multichannel implant systems feature complex speech processing strategies, high stimulation rates and multiple sites of stimulation in the cochlea. Equipped with such a state-of-the-art system, the majority of recipients today can communicate orally without visual cues and can even use the telephone.
Andere namen:
  • CI
  • Hearing implant

Wat meet het onderzoek?

Primaire uitkomstmaten

Uitkomstmaat
Maatregel Beschrijving
Tijdsspanne
Word Recognition Score in % correct over time
Tijdsspanne: Outcome measures will be assessed based on availablity of the respective data from pre-operative assessment through the following post-implantation follow-up periods: 6 weeks, 6 months, 1-, 2-, 5-, 10-, 15-, 20-years and last available follow-up.
The primary objective of this retrospective observational study is to evaluate speech performance in quiet over time of MED-EL cochlear implant users, measured as the percentage of words recognized correctly.
Outcome measures will be assessed based on availablity of the respective data from pre-operative assessment through the following post-implantation follow-up periods: 6 weeks, 6 months, 1-, 2-, 5-, 10-, 15-, 20-years and last available follow-up.

Andere uitkomstmaten

Uitkomstmaat
Maatregel Beschrijving
Tijdsspanne
Speech Recognition Threshold in noise (SRT 50) measured in dB SNR over time
Tijdsspanne: Outcome measures will be assessed based on availablity of the respective data from pre-operative assessment through the following post-implantation follow-up periods: 6 weeks, 6 months, 1-, 2-, 5-, 10-, 15-, 20-years and last available follow-up.
SRT in noise is defined as the level difference in decibels (dB SNR) between speech signal and noise at which 50% (SRT50) of the words presented can be correctly identified. SNR is a measure of the relative levels of a desired signal (such as speech) compared to background noise. It is expressed in decibels (dB SNR) and indicates how much louder the signal is than the noise.
Outcome measures will be assessed based on availablity of the respective data from pre-operative assessment through the following post-implantation follow-up periods: 6 weeks, 6 months, 1-, 2-, 5-, 10-, 15-, 20-years and last available follow-up.
Speech, Spatial and Qualities of Hearing Scale (SSQ) 12
Tijdsspanne: Outcome measures will be assessed based on availablity of the respective data from pre-operative assessment through the following post-implantation follow-up periods: 6 weeks, 6 months, 1-, 2-, 5-, 10-, 15-, 20-years and last available follow-up.
The Speech, Spatial, and Qualities of Hearing Scale (SSQ12) questionnaire is a 12 item sensitive and specific measure to assess the impact of hearing loss on speech perception, sound localization, and QoL. The SSQ12 minimum score is 0, the maximum score is 120. The higher the score obtained, the lower the difficulty experienced by the patient.
Outcome measures will be assessed based on availablity of the respective data from pre-operative assessment through the following post-implantation follow-up periods: 6 weeks, 6 months, 1-, 2-, 5-, 10-, 15-, 20-years and last available follow-up.

Medewerkers en onderzoekers

Hier vindt u mensen en organisaties die betrokken zijn bij dit onderzoek.

Sponsor

MED-EL Elektromedizinische Geräte GesmbH

Medewerkers

Inselspital, Universitätsspital Bern, Department of Otolaryngology, Head and Neck Surgery, Audiology

Studie record data

Deze datums volgen de voortgang van het onderzoeksdossier en de samenvatting van de ingediende resultaten bij ClinicalTrials.gov. Studieverslagen en gerapporteerde resultaten worden beoordeeld door de National Library of Medicine (NLM) om er zeker van te zijn dat ze voldoen aan specifieke kwaliteitscontrolenormen voordat ze op de openbare website worden geplaatst.

Bestudeer belangrijke data

Studie start (Geschat)

1 oktober 2026

Primaire voltooiing (Geschat)

1 november 2026

Studie voltooiing (Geschat)

1 november 2026

Studieregistratiedata

Eerst ingediend

11 augustus 2026

Eerst ingediend dat voldeed aan de QC-criteria

17 augustus 2026

Eerst geplaatst (Werkelijk)

20 augustus 2026

Updates van studierecords

Laatste update geplaatst (Werkelijk)

9 september 2026

Laatste update ingediend die voldeed aan QC-criteria

7 september 2026

Laatst geverifieerd

1 september 2026

Meer informatie

Termen gerelateerd aan deze studie

Trefwoorden

Aanvullende relevante MeSH-voorwaarden

Andere studie-ID-nummers

  • MED-EL_CRD_2026_02

Plan Individuele Deelnemersgegevens (IPD)

Bent u van plan om gegevens van individuele deelnemers (IPD) te delen?

NEE

Informatie over medicijnen en apparaten, studiedocumenten

Bestudeert een door de Amerikaanse FDA gereguleerd geneesmiddel

Nee

Bestudeert een door de Amerikaanse FDA gereguleerd apparaatproduct

Ja

product vervaardigd in en geëxporteerd uit de V.S.

Nee

Deze informatie is zonder wijzigingen rechtstreeks van de website clinicaltrials.gov gehaald. Als u verzoeken heeft om uw onderzoeksgegevens te wijzigen, te verwijderen of bij te werken, neem dan contact op met register@clinicaltrials.gov. Zodra er een wijziging wordt doorgevoerd op clinicaltrials.gov, wordt deze ook automatisch bijgewerkt op onze website .

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