1 / 13

Cochlear Implant

Cochlear Implant. The Human Ear. SOURCE: http://www.infj.ulst.ac.uk/~pnic/HumanEar/Andy's%20Stuff/MScProject/workingcode_Local/humanear.jpg. Why another device???. Two types of hearing impairment or deafness:. Conductive hearing loss. Sensori-neural hearing loss. Hearing Loss.

tovah
Download Presentation

Cochlear Implant

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Cochlear Implant

  2. The Human Ear SOURCE: http://www.infj.ulst.ac.uk/~pnic/HumanEar/Andy's%20Stuff/MScProject/workingcode_Local/humanear.jpg

  3. Why another device??? Two types of hearing impairment or deafness: • Conductive hearing loss • Sensori-neural hearing loss

  4. Hearing Loss • Sensori-neural hearing loss • Loss of hair cells • Loss of nerve fibers

  5. Statistics • BAD News: • ~ 28 million Americans have hearing impairment • 11 million are deaf • ~ 17 in 1,000 children under the age of 18 • Incidents increase with age • ~ 3 in 1,000 children are born deaf • GOOD News: • ~ 23,000 people in the US use cochlear implants (about 0.2%) • ~ 59,000 people worldwide use cochlear implants … and the numbers are growing!

  6. Nucleus® 24 Cochlear Implant System BTE Transmitting Coil Electrode Array Receiver-Stimulator WSP

  7. Nucleus® 24 Cochlear Implant System

  8. Sound/Speech Processing • Continuously Interleaved Stimulation (CIS) Strategy • Sound waves >>> Band-pass filters • Output waveforms >>> electric stimuli • Train of stimuli are continuously passed without overlapping.

  9. Materials & Manufacturing • BTE: Polyethylene polymer, Injection molded • Receiver-stimulator implant: Titanium shell, Deep drawn, curved to shape • Electrodes: Nitinol and Platinum or Equivalent, Coated with silicone • Every implant is manual assembled under a microscope

  10. Clinical Trials: Nucleus® Cochlear Implant System • Class III device (FDA) • 1982: First Clinical trial in Australia • 24 out of 37 subjects had significant improvement in perceiving unfamiliar speech (P < 0.001) • FDA approval for full commercial release in 1985 • Currently, 40,000 patients WW have Nucleus® Cochlear implant system.

  11. Areas of Future Research • Increasing electrode sensitivity >>> Materials, manufacturing processes, & integration • Single-electrode vs Multi-electrode, Multi-channel implants • Piezoelectric transducers • MRI compatibility >>> Eliminate magnets

  12. Conclusions • Boon to the deaf community • Very effective in treating sensori-neural deafness • Moderately expensive

  13. Video

More Related