Nucleus Hybrid L24 Extended Duration Post Approval Study (HED)

October 31, 2021 updated by: Cochlear

The Nucleus Hybrid L24 Implant System: Extended Duration Post Approval Study

This post approval study evaluates the long term safety and efficacy of the Nucleus Hybrid L24 Implant System in a group of already implanted recipients.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

The Hybrid L24 Implant System (P130016) was the subject of a pivotal clinical trial (IDE G070191) from 2007 through 2012. Data on the 50 subjects enrolled in the study, in support of safety and efficacy of the device, was submitted in June 2013 as part of Premarket Approval (PMA) #130016. As a condition of approval, March 20, 2014, a Post-Approval Study was designed to monitor the long-term (5 years postactivation for each subject) safety and effectiveness of the device in this existing cohort of implanted subjects was designed.

Study Type

Interventional

Enrollment (Actual)

35

Phase

  • Not Applicable

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

- Recipients who were implanted with the Hybrid L24 as part of the original pivotal IDE study

Exclusion Criteria:

  • Recipients who withdrew or were terminated from the L24 pivotal IDE study
  • Recipients who were re-implanted and no longer have a Nucleus Hybrid L24 implant

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Hybrid L24 pivotal study subjects
Subjects implanted with the Nucleus Hybrid L24 Implant as part of the pivotal IDE study and who still have the device implanted will continue to be followed for 5 years post activation
Device: Nucleus Hybrid L24 Implant
Subjects have already been implanted with the Nucleus Hybrid L24 implant.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Consonant-Nucleus-Consonant (CNC) Word Recognition in Quiet: Percentage of Total Words Correctly Recognized.
Time Frame: 5 years postactivation.
The CNC Words test consists of 10 recorded lists of 50 monosyllabic words in compact disk format. For this study, two lists were administered in quiet at a level equal to 60 dBA (decibels A-weighted) in the sound field and scored as total number of words correct, which will be expressed as a percentage correct. Minimum score is 0/100 words or 0% (worse), maximum score is 100/100 or 100% (best possible).
5 years postactivation.
AzBio (Arizona Biomedical Institute) Sentence Recognition in Noise: Percentage of Total Words Correctly Recognized.
Time Frame: 5 years postactivation.
The AzBio Sentence Test consists of 15 lists of 20 sentences each. AzBio sentences are spoken by different talkers in a conversational style with limited contextual cues that the listener can use to predict or 'fill in' unintelligible words. Each list includes 5 sentences from 4 different male and female speakers. Each word in the sentence counts towards the overall score. Minimum score is 0 out the total number of words in a given list (varies list to list, with an average length of 141 words) words or 0% (worse), maximum score is all words correctly repeated or 100% (best possible).
5 years postactivation.

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Cochlear

Collaborators

Mayo Clinic
University of Iowa
NYU Langone Health
Ohio State University
University of Cincinnati
Midwest Ear Institute
Hearts for Hearing
The Center for Hearing and Balance Disorders

Investigators

  • Principal Investigator: Bruce J Gantz, MD, University of Iowa

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

January 14, 2015

Primary Completion (Actual)

March 18, 2019

Study Completion (Actual)

March 18, 2019

Study Registration Dates

First Submitted

January 29, 2015

First Submitted That Met QC Criteria

February 26, 2015

First Posted (Estimate)

March 4, 2015

Study Record Updates

Last Update Posted (Actual)

November 30, 2021

Last Update Submitted That Met QC Criteria

October 31, 2021

Last Verified

October 1, 2021

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • CAM-5563-HYB-PMA

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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