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

Cochlear™ Nucleus® implants are the most reliable in the industry.*1

Along with hearing performance, that's a crucial reason why Cochlear is the most chosen1 hearing implant company.

Most reliable today**

With more than 550,000 implants worldwide,1 no other company can match us 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.4-7

Latest 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

When you choose Cochlear, you not only choose quality, you also choose our commitment to your hearing experience.

Implant reliability over time1-3

Most reliable for children

When choosing a hearing implant for your child, we understand you want the best. With a market-leading implant reliability rate of 99.75% Cumulative Survival Percentage (CSP) for children for our latest generation implant,1 this means choosing Cochlear.

Latest 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 379,000 registered Cochlear Nucleus implants worldwide1, Cochlear leads the way as the most trusted provider of implantable hearing solutions.

Number of registered implants1, 3

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

Why cochlear implant reliability matters

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

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

Nucleus Implant Reliability Report

Nucleus Implant Reliability Report

1.2MB | PDF

Download now

Review the ANSI/AAMI CI86 Reliability Report and find out more about our reliability reporting and why we have two reports.


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

** Latest generation of cochlear implants commercially available as at 31 December 2018.

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.


  1. Cochlear Limited. D1593476. Cochlear Nucleus Reliability Report, Volume 17 December 2018. 2019, Mar.
  2. Hearing Implant Reliability Reporting | MED-EL [Internet]. 2019 [cited 7 March 2019]. Available from:
  3. 2018 Global Implant Reliability Report. 027-N025-02 Rev B. Advanced Bionics AG and affiliates.; 2018.
  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.