cochlear implant presentation
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Cochlear Implant Presentation. Jennifer Callaway M.S. CCC-SLP Speech/Language Pathologist Grafton Elementary School John Long Middle School [email protected]. What is a Cochlear Implant?. A small, complex electronic device - PowerPoint PPT PresentationTRANSCRIPT
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Cochlear Implant Presentation
Jennifer CallawayM.S. CCC-SLPSpeech/Language PathologistGrafton Elementary SchoolJohn Long Middle [email protected]
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What is a Cochlear Implant?• A small, complex electronic device
• Provides a sense of sound to a person who is profoundly deaf or severely hard of hearing
• Implant is surgically placed under the skin behind the ear
• An implant has four basic parts:
• Microphone
• Speech processor
• Transmitter and receiver/stimulator
• Electrodes
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Structures of the Ear and the Cochlear Implant•Normal Ear
•Middle ear:
•Tympanic membrane
•Ossicular chain (Malleus, Incus, Stapes)
•Inner ear:
•Cochlea
•Vestibular Nerve
•Cochlear Implant•Receiver-stimulator portion of implant is surgically placed beneath the skin
•Small opening made into the cochlea and implant electrode is threaded in
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Who receives Cochlear Implants?• Both children and adults can be candidates for implants.
• Approximately 59,000 people worldwide have received implants. (According to the Food and Drug Administration 2002 data)
• In the United States:
• 13,000 adults have cochlear implants
• 10,000 children have received them
• What is the cost? About $30,000 to $55,000
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The Surgical Procedure• Performed under general anesthesia
• Operation takes approximately three hours
• Patients generally able to go home the same day of surgery
• Patient not able to hear automatically
• ‘Hook Up’ Procedure occurs about 1 month post-implant
• Takes some time for the brain to get used to the stimulation from the implant
• Involves a rehabilitation program
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Cochlear Implants vs. Hearing Aids
• A cochlear implant is very different from a hearing aid.
• Hearing aids amplify sound.
• Cochlear implants compensate for damaged or non-working parts of the inner ear.
• Enable people to detect very soft speech and environmental sounds
• Hearing through an implant may sound different from normal hearing
Types of Hearing Aids
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What a Cochlear Implant Can NOT do:
• An implant does NOT restore or create normal hearing.
• It cannot replicate the same sensitivity or speech understanding in all acoustic environments as a normal hearing person.
• Rather, it can give useful auditory understanding of the environment and help the
individual to understand speech.
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Limitations and Special Considerations
• Physical Activities:
• External portion must be removed during swimming
• Voice does not carry well in large outdoor spaces
• Poor acoustics in gyms
• Sound bounces off walls
• Background noise competes with speaker’s voice
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One Model: Nucleus Esprit 3G• Made by Cochlear
• Easy-to-use controls and light weight - only 15 grams with batteries
• Batteries: 3 high power zinc-air batteries•Battery life varies
• Two programs for different listening environments
• Built-in telecoil for access to phones and theaters
• Wireless access to Microlink FM
• Whisper Setting™ to bring soft sounds closer
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What does a Cochlear Implant sound like?
• http://www.utdallas.edu/~loizou/cimplants/• Normal speech• Speech via Cochlear Implant (8 channel)
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TroubleshootingPROBLEM SOLUTION
Intermittent buzzing sound
* Look for sources of electromagnetic interference including:a. Radio/TV transmission towersb. Security systemsc. Some digital cellular phones
No sound
* Switch processor off for a few seconds and then turn back on again.* Check mode setting* Change all three HIGH POWER 675 batteries and clean battery contacts* Plug in the auxiliary microphone* Check coil using signal check
Static * Plug in the auxiliary microphone
Muffled or distorted sound
* Remove any materials which may be covering the headpiece * Plug in the auxiliary microphone* Change all three batteries with HIGH POWER 675 batteries
No sound after getting wet* Leave in Dri-Aid pack overnight* Call your implant center
Intermittent sound
* Change all three batteries with HIGH POWER 675 batteries * Plug in auxiliary microphone* Check coil using signal check
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References and Images Used• www.thelisteningcenter.com/
• www.utdallas.edu/~loizou/cimplants/
• www.hei.org/research/depts/aip/audiodemos.htm
• www.cochlear.com/
• www.cochlearimplant.com/
• www.phys.unsw.edu.au/ ~jw/Fearnetal.html
• www.bcig.org/images/news.gif
• www.childrensspecialists.com/ body.cfm?id=762
• www.lhsc.on.ca/ cochlear/hearing.htm
• www.american-hearing.org/ name/coganpatient.html
• http://apollo.med.unc.edu/ent/oto-hns/images/CI2.jpg
• www.chsc.org/images/hastyles_resize.jpg
• www.nidcd.nih.gov/health/hearing/images/ear_cochlear.asp
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Purpose of Presentation• Audience: educators, parents, students, professionals
• Objective: Answer the following questions:
• What is a cochlear implant?
• Who benefits from a cochlear implant?
• How do they work?
• How are hearing aids and cochlear implants different?
• What do I do when something goes wrong?
• What are good communication techniques?