Nucleus® implant reliability

With a cochlear implant, you want to choose the best hearing solution for today and for the future. That’s why reliability is so important.

Grandson whispers to grandpa

What you’ll find on this page

  • Learn why implant reliability is important.
  • Discover why Cochlear™ Nucleus® implants are the most reliable today for both adults and children.
  • Hear from Cochlear’s first ever child recipient — 30 years after she received her implant.

Reliability you can count on

Choosing a Cochlear implant is an important decision. Be it for yourself or a loved one, you want to trust that you are choosing the right hearing solution for today and for the future.

Along with hearing performance, the reliability of the implant you choose is a measure of quality and can provide peace of mind for the years to come. That's why it matters that Cochlear™ Nucleus® Implants are the most reliable in the industry.1-3

Most reliable today^

No other implant manufacturer can match the reliability of our current generation implants.1-3

Current generation implant reliability1-3

Reliability data sourced from other manufacturers' reports:

Advanced Bionics

Most reliable over time

Cochlear Nucleus implants are the most reliable on the market, today^ and over time.1-3

Transparency is important to us, so we meet and report against interdependent global standards for implant reliability, publishing data of every implant generation, past and present.4-8

Implant reliability over time1-3

Most reliable for children

When choosing a hearing implant for your child, we understand that you want the very best. Cochlear has market-leading implant reliability rates for children, with 99.71% CSP* within six years for our Nucleus Profile Series Implant and 100% CSP within one year for our Nucleus Profile Plus Series Implant.1

Current generation implant reliability in children1-3

Note: MED-EL does not report data separately for adults and children which is required by the European and International consensus statements on cochlear implant reliability reporting.

Most chosen

With more than 410,000 registered Cochlear Nucleus implants worldwide1, Cochlear leads the way as the most chosen provider of implantable hearing solutions.

Number of registered implants1, 3

MED-EL does not report number of registered cochlear implants.

Cochlear Nucleus System Reliability Report

Cochlear Nucleus System Reliability Report

10.2 MB | PDF

For data based on the ANSI/AAMI CI86 Standard for cochlear implant systems click here. For information on the calculation of implant reliability click here.

Why cochlear implant reliability matters

Cochlear's first commercial child recipient, Holly Taylor, has relied on her Cochlear implant for more than 30 years. Discover why Holly says, "I choose quality. I choose Cochlear." 

Holly is an immediate family member of an employee of Cochlear Limited.


Please seek advice from your health professional about treatments for hearing loss. Outcomes may vary, and your health professional will advise you about the factors which could affect your outcome. Always read the instructions for use. Not all products are available in all countries. Please contact your local Cochlear representative for product information.

Views expressed are those of the individual. Consult your health professional to determine if you are a candidate for Cochlear technology.

For a full list of Cochlear’s trademarks, please visit our Terms of Use page.


* CSP = Cumulative Survival Percentage - CSP includes both device and accident-related issues.

^ Latest generation of cochlear implants commercially available as at 31 December 2019.

  1. Cochlear Limited. D1712187. Cochlear Nucleus Reliability Report, Volume 18 December 2019. 2020, Mar.
  2. Hearing Implant Reliability Reporting | MED-EL [Internet]. 2020 [cited 25 February 2020]. Available from:
  3. 2019 Global Implant Reliability Report. 027-N025-02 RevC. Advanced Bionics AG and affiliates.; 2019.
  4. International Standard ISO 5841-2. Implants for Surgery — Cardiac Pacemakers — Part 2: Reporting of Clinical Performance of Populations of Pulse Generators or Leads. Geneva (Switzerland): International Organization for Standardization. 2000.

  5. International Standard ISO 5841-2. Implants for Surgery — Cardiac Pacemakers — Part 2: Reporting of Clinical Performance of Populations of Pulse Generators or Leads. Geneva (Switzerland): International Organization for Standardization. 2014.

  6. European Consensus Statement on Cochlear Implant Failures and Explantations. Otol Neurotol. 2005 Nov;26(6):1097-9.

  7. Battmer RD, Backous DD, Balkany TJ, Briggs RJ, Gantz BJ, van Hasselt A, et al. International Classification of Reliability for Implanted Cochlear Implant Receiver Stimulators. Otol Neurotol. 2010 Oct;31(8):1190-3.

  8. ANSI/AAMI CI86. Cochlear implant systems: Requirements for safety, functional verification,. (2017). Arlington, VA: American National Standards Institute.