Nucleus® Implants

Cochlear provides a broad range of implants and electrodes to address your type of hearing loss, cochlea anatomy and surgeon preference.

Otolaryngologist, Dr Robert Gunn, assesses cochlear implant surgery scans.

What you will find on this page

  • Learn how Cochlear™ Nucleus® Implants are designed

  • Explore the Cochlear Nucleus Implant portfolio

  • Discover the link between electrode design and hearing performance

Cochlear’s Implant design philosophy

All our implants are designed to last a lifetime with performance and preservation of the cochlear structures in mind.* Our broad range of implants and electrodes allow your surgeon to choose the best one for your or your child's type of hearing loss, cochlea anatomy and the surgeon's preference. In addition, we design our implants with the future in mind by allowing for future advances in sound processor technology without the need for additional surgeries.

“I chose Cochlear because they have a very strong track record for making the newer technologies available to prior generation implants.”

- Oscar H. - Father of Nucleus® recipient

World’s thinnest implantCochlear Nucleus Profile Implant

The Nucleus Profile Series implant expands our large implant portfolio by providing the thinnest implant available.1-3  Its thin size and design follows the curvature of the head for the potential of a better cosmetic outcome and less time in surgery. Profile Implant also has a high impact resistanceup to 2.5 jouleswhich meets the European standards for impact testing.

Industry-leading innovations in electrode design for optimal hearing performance

The anatomy of the cochlea can vary from person to person which is why we offer a range of electrode shapes and lengths. Your surgeon will decide on the best one to provide your best hearing performance. Unique features of Cochlear's electrode portfolio include:

  • 22 active contacts** for maximum frequency coverage along the hearing nerve

  • The Hybrid L24 Electrode+ that is specifically designed and approved to preserve hearing

  • Perimodiolar electrodes that are inserted closest to the hearing nerve for your best hearing performance4,5

  • Best long-term implant reliability record in the industry6-8

  • Easy to remove magnet to ensure safety and comfort for MRIs

Electrode placement is critical to hearing performance

Cochlear's electrodes are placed where hearing nerve stimulation is most effective. In order to benefit from the full range of sound, the area closest to the hearing nerve tends to be stimulated.10-11 This area is known as the hearing zone.

Clinical research shows that deeper insertion beyond the hearing zone can be associated with deterioration in performance due to pitch confusion at the tip of the cochlea as well as damage to the delicate cochlear structures.11-12 Insertion depth along with the most active sequential contacts in the industry22 electrodes**help provide access to the full spectrum of sound and a richer hearing experience.

Interested in learning more?

If you are interested in learning more about the Nucleus System, we can send you a free informational guide today.


*Contact Cochlear for details on specific product warranty information.

**Based on manufacturer's specification collateral.

†The Hybrid L24 Implant is approved in the U.S. only for adults 18 and older.

Please seek advice from your medical practitioner or health professional about treatments for hearing loss. They will be able to advise on a suitable solution for the hearing loss condition. All products should be used only as directed by your medical practitioner or health professional. Not all products are available in all countries. Please contact your local Cochlear representative.

Views expressed by Cochlear recipients and hearing health providers are those of the individual. Consult your hearing health provider to determine if you are a candidate for Cochlear technology. Outcomes and results may vary.

ACE, Advance Off-Stylet, AOS, AutoNRT, Autosensitivity, Beam, Button, CareYourWay, Carina, Cochlear, 科利耳, コクレア, Cochlear SoftWear, Codacs, ConnectYourWay, Contour, Contour Advance, Custom Sound, ESPrit, Freedom, Hear now. And always, HearYourWay, Hugfit, Hybrid, Invisible Hearing, Kanso, MET, MicroDrive, MP3000, myCochlear, mySmartSound, NRT, Nucleus, Off-Stylet, Slimline, SmartSound, Softip, SPrint, True Wireless, the elliptical logo, WearYourWay and Whisper are either trademarks or registered trademarks of Cochlear Limited. Ardium, Baha, Baha SoftWear, BCDrive, DermaLock, EveryWear, Vistafix, and WindShield are either trademarks or registered trademarks of Cochlear Bone Anchored Solutions AB.


  1. Cochlear Nuclues Profile—CI512 Implant Spec Sheet.
  2. Technical Specifications. HiResolution™ Bionic Ear System by Advanced Bionics, [PDF-Internet] [cited 2015 Jan 5]. Available from:
  3. Concerto. World’s Smallest & Lightest Titanium Implant, [PDF-Internet] [cited 2015 Jan 5]. Available from: 22676.pdf.
  4. Holden LK, Finley CC, Firszt JB, Holden TA, Brenner C, Potts LG, et al. Factors affecting open-set word recognition in adults with cochlear implants. Ear Hear.2013 May-Jun;34(3):342-60.
  5. Esquia (2013): Esquia Medina, GN., Borel, S., Nguyen, Y., Ambert-Dahan, E., Ferrary, E., Sterkers, O., Bozorg Grayeli, A. Is Electrode-Modiolus Distance a Prognostic Factor for Hearing Performances after Cochlear Implant Surgery. Audiol Neurotol. 2013;18:406-413. DOI: 10.1159/000354115.
  6. Cochlear Nucleus Implant Reliability Report. Volume 16 | December 2017. D1175804. Cochlear Ltd; 2018.
  7. Hearing Implant Reliability Reporting | MED-EL [Internet]. 2018 [cited 6 March 2018]. Available from:
  8. 2018 Global Implant Reliability Report. 027-N025-02 Rev B. Advanced Bionics AG and affiliates.; 2018.
  9. 2018 [cited 6 March 2018]. Available from:
  10. Stakhovskaya O., Sridhar, D., Bonham, B.H., Leake, P.A. Frequency map for the human cochlear spiral ganglion: Implications for Cochlear Implants. JARO,2007; 8(2): 220-233.
  11. Ariyasu, L., Galey, FR., Hilsinger, RJR., Byl, FM. Computer-generated three dimensional reconstruction of the cochlea. Otolaryngology - Head and Neck Surg 1989; 100(2): 87.
  12. Gani M, Valentini G, Sigrist A, Kos MI, Boex C. Implications of deep electrode insertion on cochlear implant fitting. J Assoc Res Otolaryngol. 2007 Mar; 8(1):69-83.