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Who was responsible for the first attempt at
cochlear implantation?
Volta, 1790. He inserted metal rods into each of his own ears. Connected the rods to 30-40 of his newly invented electrolytic cells. Delivered approximately 50 volts to himself. Perceived sensation similar to a blow to the head. Head sound of violently boiling liquid (did not repeat experiment) TERM 2
Present Day Cochlear Implant
DEFINITION 2 Internal components are surgically implanted. External components are visible and removable. TERM 3
Basic External Parts
DEFINITION 3 headset which contains the microphone and the transmitter. and the speech processor which is connected to the headset and is worn on the body. TERM 4
Surgically Implanted Internal Parts
DEFINITION 4 Internal receiver stimulator which has a magnetic connection and the electrode ray which is embedded in the cochlea and sends the signnal through CN VII to Heschl's gyrus TERM 5
Microphone
DEFINITION 5 picks up sound waves and convert to electric signal
Electric Signal
this is sent tot he externally worn speech transmitter through a cord TERM 7
Transmitter
DEFINITION 7 This is held in place by a powerful magnet and sends the electric signal to the processor which is worn on the body TERM 8
Speech Processor
DEFINITION 8 This is worn on the body. Codes the information using a "device specific" strategy. This sends information back to the transmitter code. TERM 9
Coil
DEFINITION 9 This is within the transmitter. This sends information through the skull via external radio wave to an internal receiver TERM 10
Receiver
DEFINITION 10 This sends information to implanted electrodes
Child Candidacy (Not Infant)
6 month amplification trial (minimum) using device consistently and in combination with aural rehab. Receiving benefit from the auditory work. Assess family motivation and expectations. Must understand that the ci doesn't change the fact that the child is deaf. Congenitally deaf child has a poor prognosis after the age of 6 TERM 17
Infant Candidacy
DEFINITION 17 This is a family decision. Must understand the benefits, risks, and limitations of the implant (lifetime decision). Cochlea is adult size at birth; no need to accommodate for growth TERM 18
What Does Deaf Culture Say about Cochlear
Implants?
DEFINITION 18 In the early 1990's they strongly opposed them. It was considered an attach on deaf culture. Implant teams are required to present all options equally (by law.) Implant teams are required to inform families about Deaf Culture issues TERM 19
What is the CI Hook-Up?
DEFINITION 19 this is the initial fitting of the external parts (programming with the audiologist) TERM 20
When does the CI Hook-Up Take Place?
DEFINITION 20 after the surgery has taken place and the patient has had time to heal. roughly one month after surgery
How Long Does the Hook-Up Take?
1 1/2 to 2 hours TERM 22
What Does the Audiologist Do During the
Hook-Up?
DEFINITION 22 They check the integrity of the internal device using "telemetry." This may be done before the surgeon closes the wound. They program the speech processor using manufacturer-designed diagnostic programs interfaced with a PC. They activate the microphone TERM 23
One Week After the Hook-Up...
DEFINITION 23 Patient returns to discuss experiences with implanted device. Patient is ready to begin receiving signals and learning how to interpret them TERM 24
Check-Ups Post Hook-Up
DEFINITION 24 two, three and six months TERM 25
AR Focus for CI Clients
DEFINITION 25 Auditory problem solving to decode the signal. Provide information to audiologist to continue programming the device based on patient success and experience
