Hearing Implant Performance in Adults With Low-Frequency Residual Hearing

  • End date
    Apr 10, 2023
  • participants needed
  • sponsor
Updated on 10 April 2021


The purpose of the feasibility study is to investigate hearing performance (audiometry and speech perception) using the CI624 in a group of adults (n=15) with low-frequency residual hearing who meet inclusion criteria.

Condition Sensorineural hearing loss, Hearing Loss, Auditory Loss and Deafness, Hearing Impairment, Low-Frequency Residual Hearing, Low-Frequency Residual Hearing
Treatment CI624 Slim 20 Electrode
Clinical Study IdentifierNCT04741048
Last Modified on10 April 2021


Yes No Not Sure

Inclusion Criteria

18 years-of-age or older at the time of surgery
Low-frequency threshold at 500 Hz 50 dB HL and high-frequency pure-tone average (PTA), 2000-8000 Hz 65 dB HL in the ear to be implanted
Pure-tone average (PTA) (0.5k, 1k, 2k Hz) > 30 dB HL in the contralateral ear
CNC word recognition scores (mean of two lists) 60% in the ear to be implanted and 80% in the contralateral ear
English spoken as a primary language
Willing and able to provide written informed consent

Exclusion Criteria

Individuals older than 70 years at the time of surgery
Duration of severe to profound sensorineural hearing loss > 20 years per self-report
Onset of sensorineural hearing loss, for the purpose of this study, prior to 5 years-of-age
Ossification or any other cochlear anomaly that might prevent complete insertion of the electrode array
Conductive overlay of 15 dB or greater at two or more frequencies, in the range of 250 through 1000 Hz in the ear to be implanted
Hearing loss of neural or central origin
Diagnosis of Auditory Neuropathy
Active middle-ear infection
Medical or psychological conditions that contraindicate undergoing surgery as determined by the Investigator
Unrealistic expectations on the part of the subject, regarding the possible benefits, risks, and limitations that are inherent to the device and/or procedure, as determined by the Investigator
Additional handicaps that would prevent or restrict participation in the audiological evaluations as determined by the Investigator
Unable or unwilling to comply with the requirements of the clinical investigation as determined by the Investigator
Investigator site personnel directly affiliated with this study and/or their immediate family (spouse, parent, child, or sibling)
Cochlear employees or employees of a Contract Research Organization (CRO) or contractors engaged by Cochlear for the purposes of this investigation
Currently participating, or has participated in the last 30 days, in another interventional clinical investigation/trial involving an investigational drug or device
Clear my responses

How to participate?

Step 1 Connect with a site
What happens next?
  • You can expect the study team to contact you via email or phone in the next few days.
  • Sign up as volunteer to help accelerate the development of new treatments and to get notified about similar trials.

You are contacting

Investigator Avatar

Primary Contact


Preferred Language
Other Language
Please verify that you are not a bot.

Additional screening procedures may be conducted by the study team before you can be confirmed eligible to participate.

Learn more

If you are confirmed eligible after full screening, you will be required to understand and sign the informed consent if you decide to enroll in the study. Once enrolled you may be asked to make scheduled visits over a period of time.

Learn more

Complete your scheduled study participation activities and then you are done. You may receive summary of study results if provided by the sponsor.

Learn more

Similar trials to consider


Not finding what you're looking for?

Every year hundreds of thousands of volunteers step forward to participate in research. Sign up as a volunteer and receive email notifications when clinical trials are posted in the medical category of interest to you.

Sign up as volunteer

user name

Added by • 



Reply by • Private

Lorem ipsum dolor sit amet consectetur, adipisicing elit. Ipsa vel nobis alias. Quae eveniet velit voluptate quo doloribus maxime et dicta in sequi, corporis quod. Ea, dolor eius? Dolore, vel!

  The passcode will expire in None.

No annotations made yet

Add a private note
  • abc Select a piece of text from the left.
  • Add notes visible only to you.
  • Send it to people through a passcode protected link.
Add a private note