Nucleus® Implant reliability

When choosing a cochlear implant, you want to trust that you are choosing 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
  • Learn about Nucleus® Sound Processor reliability

Reliability you can count on

Cochlear™ Nucleus® Implants are the most reliable in the industry.1-3 Along with hearing performance, that’s a key reason why Cochlear is the most chosen1-4 hearing implant company. With more than 475,000 implants worldwide,1 no other company can match our record for implant reliability.1-3

We meet and report against independent global standards for implant reliability, publishing data of every implant generation, past and present.1



Cochlear Nucleus Sound Processor reliability

The Nucleus Sound Processors are built to be very durable and the reliability ratings support this. Sound processor reliability is measured by the number of sound processors that are returned over a period of time compared to the sound processors sold over that same time period - Failed Component Return Rate or FCRR. These returns can be due to mechanical, electrical, moisture or damaged/unknown malfunctions. The lower the number, the better.

  • Nucleus 7 Sound Processor: 0.5% FCRR over 2 years 1,5
  • Nucleus Kanso Sound Processor: 0.3% FCRR over 2 years 1

Why reliability matters

The world's first child recipient, Holly Taylor, has relied on her Cochlear Nucleus Implant for over 30 years. Discover why she says, 'I choose quality. I choose Cochlear.'

Cochlear Nucleus System reliability

Review our Nucleus Implant reliability report using the European Consensus Statement, International Classification of Reliability & ISO 5841-2 standards.

Download report

To review the ANSI/AAMI CI86 Standard Reliability Data for Cochlear Implants and Sound Processors, please click here. For more information outlining the difference between the reports, click here.


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.

**Based on the manufacturers that do report compliantly with the European Consensus Statement including the requirement to report sample size.

~Holly is an immediate family member of a former employee of Cochlear Limited.


  1. Based on implant generations released within a comparable period with 5+ years of CSP data.
  2. Cochlear Limited. D2073229 Cochlear Nucleus Reliability Report Volume 21 December 2022, March 2023
  3. Cochlear Implant Reliability | MED-EL [Internet]. 2023 [cited 1 March 2023]. Available from: Data valid as of 1 July 2022.
  4. Advanced Bionics Reliability Report December 2022. 028-Q048-02 Rev B. Advanced Bionics AG and affiliates. Data valid as of 1 October 2022.
  5. European Consensus Statement on Cochlear Implant Failures and Explantations. Otol Neurotol. 2005 Nov;26(6):1097-9.
  6. 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.
  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.