The history of Cochlear implantation - Dr. Dr. h.c. Monika Lehnhardt

  • 1,438 views
Uploaded on

 

  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Be the first to comment
    Be the first to like this
No Downloads

Views

Total Views
1,438
On Slideshare
0
From Embeds
0
Number of Embeds
1

Actions

Shares
Downloads
11
Comments
0
Likes
0

Embeds 0

No embeds

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
    No notes for slide
  • А звуковой процессор CP810 – уже восьмым поколением звуковых процессоров. Это говорит о значительных инвестициях фирмы в новые технологии и разработки. От громоздких карманных с неудобными оголовьями до элегантных заушных…
  • Третий компонент новой системы Nucleus 5 – устройство дист. управления

Transcript

  • 1. The history of Cochlear Implantation Dr. Dr. h. c. Monika Lehnhardt Suzdal, November 2011
  • 2. Wever EG, Bray CW (1936) www.monika-lehnhardt.net
  • 3. www.monika-lehnhardt.net Charles Eyries, Otologist in Paris
  • 4. www.monika-lehnhardt.net André Djurno, Engineer Co-working with Eyries
  • 5. www.monika-lehnhardt.net Fritz Zöllner, Otologist in Freiburg
  • 6. www.monika-lehnhardt.net Wolf Dieter Keidel, Physiologist in Erlangen
  • 7. www.monika-lehnhardt.net
  • 8. www.monika-lehnhardt.net
  • 9. www.monika-lehnhardt.net William House, Otologist in Los Angeles
  • 10. www.monika-lehnhardt.net
    • Vision for a technology that would enable the deaf to hear
    • Research supported by public donation, commenced 1967
    • First cochlear implant, 1978, Melbourne Hospital
    “ In spite of the problems and criticisms, I just had to go on. A cochlear implant was their only hope of ever hearing.” -Professor Graeme Clark
  • 11.
    • Ernst Lehnhardt
    www.monika-lehnhardt.net
  • 12. www.monika-lehnhardt.net
  • 13. www.monika-lehnhardt.net
  • 14. www.monika-lehnhardt.net
  • 15. www.monika-lehnhardt.net Electrode Array in situ
  • 16.
    • 1984 First adult patients in Hannover, Germany
    www.monika-lehnhardt.net
  • 17.
    • Ernst Lehnhardt with his audiologist Rolf Battmer
    www.monika-lehnhardt.net
  • 18. www.monika-lehnhardt.net
  • 19. www.monika-lehnhardt.net
  • 20. Soft Surgery www.monika-lehnhardt.net
  • 21. www.monika-lehnhardt.net Soft Surgery
  • 22. www.monika-lehnhardt.net
  • 23. www.monika-lehnhardt.net
  • 24. Freedom Cochlear Implant www.monika-lehnhardt.net
    • 4th generation ASIC CMOS internal chip with
      • Increased precision current sources for accurate nerve stimulation
      • 4th generation telemetry with less internal noise, enabling AutoNRT
      • Improved power efficiency for longer battery life
    • Generational mechanical changes for
      • improved reliability
  • 25. Freedom Speech Processor www.monika-lehnhardt.net
    • Dual microphones for high quality sound capture and support for Pre-processing
    • Dual 16-bit analog to digital converters for CD quality 96dB dynamic range processing
    • Quad 16 Bit DSP
    • In-built Telecoil
    • Integrated accessory connector
    • IP44 Splash Compliant
  • 26. www.monika-lehnhardt.net
  • 27. www.monika-lehnhardt.net
  • 28. www.monika-lehnhardt.net Мониторинг . Контроль . Управление . Cochlear : Система Nucleus 5 Cochlear : Дистанционное управление Nucleus CR110
  • 29. Exponential Growth- First Choice Worldwide www.monika-lehnhardt.net
  • 30. www.monika-lehnhardt.net Development of Candidate Selection Criteria United States (Nucleus Implant Systems) Broadening Indications Adults Children 1985
    • FDA approval for implantation of candidates aged 18 years and older
    • postlingually deafened
    • profound bilateral sensorineuronal deafness
    • no benefit from hearing aid
    1990
    • FDA approval for implantation of candidates aged
    • 2 years and older
    • profound bilateral sensorineuronal deafness
    • little or no benefit from hearing aid
    • candidate and family must be well motivated and possess realistic expectations
    1995
    • Include pre-and perilinguistically deafened adults
    • Limited benefit from hearing aids defined as 30% or
    • less in best aided condition on tape recorded tests of open-set sentences
    1998
    • Limited benefit from hearing aids defined as 40% or less in best aided condition on tape recorded tests of open-set sentences
    • 18 months and older
    • 3-6 months hearing aid trial
    • <20% score on MLNT or LNT test
    2000
    • Limited benefit from hearing aids defined as 60% or less in best aided condition on tape recorded tests of open-set sentences
    • 12 months and older
    • 3-6 months hearing aid trial
    • Lack of progress in development of
    • auditory skills or <30% score on MLNT or LNT test, depending on age
  • 31. Trend towards bilateral www.monika-lehnhardt.net
  • 32. www.monika-lehnhardt.net
  • 33. www.monika-lehnhardt.net New Surgical Techniques
  • 34. TIKI Technolog y www.monika-lehnhardt.net Implantable Rechargeable Battery
      • Extremely low power Integrated Circuit incorporating:
      • Audio pre-processing
      • Stimulator module
      • Speech processor
      • Power management
      • High voltage output switches
    High performance implantable microphone that will last a lifetime ?
  • 35. Suppose the electrodes could be in close contact with the nerves… www.monika-lehnhardt.net
  • 36. www.monika-lehnhardt.net Neurotrophins and Auditory Nerve Regeneration Normal Deafened Regeneration Habenula Perforata Wise et al, The Bionic Ear Institute, 2003. Inner Haircells Outer Haircells
  • 37. Nanotechnology: Guidance Molecules www.monika-lehnhardt.net
  • 38. Thank You for your attention! www.monika-lehnhardt.net