Learning Objective. To learn about current technological interventions that allow children with hearing loss to access auditory information

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(2)

Learning Objective

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j

To learn about current

technological interventions that

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allow children with hearing loss

to access auditory information

in the educational environment

in the educational environment.

(3)

Module Outline

Goal: To improve each student’s access to

education through the use of technology

• _{Personal hearing technologies}

education through the use of technology

• _{Classroom/group hearing devices}

• _{How they work}

• _{Limitations of these devices}

• _{How to check and troubleshoot}

• _{Additional classroom modifications}

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Hearing Technology: Personal Devices

The most common personal

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hearing device is the hearing aid.

Most school‐aged children will

utilize a hearing aid that is worn

behind the ear, commonly called a

BTE (behind‐the‐ear) hearing aid.

(

)

g

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BTE Hearing Aids & Ear Mold

Ear Hook

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Hearing Technology: Personal Devices

Behind‐The‐Ear (BTE)

Behind The Ear (BTE)

Hearing Aids

Ear Hook

Ear Mold BTE Hearing Aid

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Hearing Technology: Hearing Aid Styles

Used mostly with adults

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Hearing Technology: Hearing Aids

Bone Conduction Hearing Aids

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Hearing Technology: Bone Conduction Aids

BC Hearing Aids can be worn on a metal

head band. . .

…or on

a soft

h d

head

band.

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Hearing Technology: Cochlear Implants

An internal receiver is

surgically implanted behind

the ear The receiver has an

the ear. The receiver has an

electrode array that is

inserted into the cochlea

inserted into the cochlea.

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Hearing Technology: Cochlear Implants

Processor External Stimulator

External Components of

the Cochlear Implant:

•External device

S

d P

•Sound Processor

•External Stimulator

•Power Supply

Power Supply Image courtesy of Cochlear Americas.

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Hearing Technology: Cochlear Implants

I t l R i Internal Receiver

Internal Components

of the Cochlear Implant:

•Internal Receiver

•Electrode Array

Electrode Array Electrode Array Image courtesy of Cochlear Americas.

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Hearing Technology: Cochlear Implants

Currently three types

have been approved for

use in the USA by the

Food and Drug

Administration,

manufactured by:

–

Advanced Bionics

–

Cochlear Americas

–

MED EL

Images courtesy of Advanced Bionics,

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Hearing Technology: Other Implanted Devices

Bone Anchored

Hearing Devices are

attached to the bone

ith

i

l

t d

with an implanted

titanium post.

Image courtesy of Cochlear Americas.

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Hearing Technology: Other Implanted Devices

B

A h

d

Bone Anchored

Hearing Devices are

Bone Anchored

Devices are also used

used for ears with

malformed outer

for children with

hearing loss in one

malformed outer

and/or middle ears.

g

ear and normal

hearing in the other

ear.

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Classrooms Are Noisy Places

Learning is an

active and

sometimes noisy

!

process!

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Additional Classroom Modifications

• Reduce internal noise

• Reduce external noise

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Assistive Devices for Classroom

Environments

Personal FM Systems

–

Body-Worn Devices

–

Ear Level Devices

Sound Field Systems

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Body‐Worn Listening Devices

FM Systems:

The child wears a receiver that attaches

to his hearing aids with a cord or cable.

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Body‐Worn Listening Devices

Teacher‐worn transmitter and microphone Student‐worn receiver, attached to a hearing aid p Image courtesy of Phonic Ear.

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Body‐Worn Listening Devices

Direct Audio Input “boots” or “shoes” attach the

student’s personal hearing aids to the FM

stude t s pe so a ea

g a ds to t e

receiver with a cord.

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BTE FM Devices

FM Receiver FM Receiver

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Portable and Wall-Mounted

Sound Field Systems

Two formats:

FM

• FM

• Infrared

a ed

Usually the speaker and the

receiver are housed in one unit.

The speaker/receiver unit has a

h

dl f

i

handle for easy carrying.

Image courtesy of Front Row Pro.

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Mounted Sound Field Systems

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FM Sound

Many models

FM Sound Field Speakers, Receiver &

are available.

Receiver & Transmitter

with boom microphone Infrared Sound Field System with Speakers, Receiver & Neck‐worn Transmitter microphone Images courtesy of Front Row Pro.

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Mounted Sound Field Systems

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Some systems have wall

Some systems have wall‐

mounted speakers on

h fill h

i

the fill the entire

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Keep in mind…

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It is critical to provide

visual and auditory

access to information;

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But who’s checking?

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• Educate and empower parents, care‐givers, and teachers

• Provide necessary tools and skills

• Monitor in school settings

P

id

ti

t

l t

h ki

ti

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What do you need to know?

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–

The student’s hearing loss degree type etc

–

The student s hearing loss degree, type, etc.

–

Type of student’s personal hearing technology

–

Type(s) of listening technology provided by the

family or school for classroom use

–

Name of the district contact that provides services

to students who are deaf or hard of hearing

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Knowledge is Powerful!

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Information about hearing aids, cochlear

implants and group listening devices can be

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g

p

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found online.

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Checking and Troubleshooting Hearing Aids

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Basic Test Kit

Basic materials needed:

–

Listening stethoscope

–

Battery tester

–

Air blower (syringe)

–

Wax removal tool

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HA Total Looking/Listening Check (TLLC) –

g/

g

(

)

Daniel Ling

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COMPONENT LOOKING LISTENING

Battery & Battery Voltage measured above 1.2.

Battery & Battery Compartment

Voltage measured above 1.2. Compartment free of rust, corrosion or debris

M ldi & T bi F f & i t t N f db k h l b i

Molding & Tubing Free of wax & moisture, not cracked or rough, no holes or tears in tubing, tubing is securely in the ear mold

No feedback when canal bore is covered, sound is not weak or absent

in the ear mold

Ear Hook Free of wax & debris, filter in place (if present), not cracked, f f l h d ( ) No feedback when hook opening is covered, sound is not weak or b fits firmly to hearing aid (HA) absent Microphone & Internal Components No visible damage to microphone or case of the HA, Six Sound Check is clear & free of distortion, sounds do not cut out controls are free of dirt & debris and move easily when case is pressed, static is not present when controls are moved

Feedback No visible damage to ear mold, With volume on full, cover canal

Feedback No visible damage to ear mold, tubing, ear hook, or HA With volume on full, cover canal opening of mold, hold aid near your ear. There should not be any feedback from the HA.

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Checking Sound Quality: The Ling Six Sound Test

An excellent way to quickly check the student’s sound

i

!

reception!

Have the student repeat the following sounds:

• /a/ as in “mama”

• /i/ as in “bee”

• /m/ as in “me”

• /m/ as in me

• /∫/ as in “shoe”

• /u/ as in “boot”

• /

s/ as in “sew”

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Troubleshooting Hearing Aids

(Patton, 2001)

Problem Battery Ear Mold Tubing Hearing Aid (HA)

Dead a) Wrong type a) Canal a) Tubing a) HA turned off b) Inserted incorrectly c) Corroded clogged with ear wax disconnected b) Moisture blocking tube ) C ll d b) Corroded battery contacts c) O/T/M switch in the T i i c) Collapsed, clogged, or twisted position d) Internal break in the microphone or other part part Weak a) Wrong type b) Weak a) Wax in canal a) Cracked, small hole a) Wrong power setting b) Microphone opening opening b) Loosely attached c) Wrong type clogged c) Broken microphone d) Wrong tone setting ) Filt i h k e) Filter in ear hook clogged f) Internal problem

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Troubleshooting Hearing Aids

(Patton, 2001)

Problem Battery Ear Mold Tubing Hearing Aid (HA)

Feedback a) Wrong type a) Cracked or

li a) Cracked or ll h l a) Opening in ear hook b) E h k fi l split b) Poor fit small hole b) Loosely attached ) W t b) Ear hook not firmly attached c) Internal problem c) Wrong type

Intermittent a) Corrosion a) Tubing bends

or collapses a) Poor battery contact b) Internal connections when aid is moved broken or breaking

Distortion a) Weak a) Wax in a) Clogged a) Microphone opening

canal b) Moisture clogged or covered b) Defective microphone c) Incorrect tone setting d) Volume too high Static (Noise) a) Weak b) Corroded a) Internal problem b) Volume too high

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Use of the Ling Six Sound Check

g

With a student: Sound

Response

@ one foot

@ six feet

@ ten feet

@

/a/

(mama)

/ /

/u/

(boot)

/i/

(see)

/i/

(see)

/m/

(me)

/∫/

(she)

/ /

/s/

(sew)

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Sample Cochlear Implant User Guides

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Video: Help Lights & LED Messages on

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Cochlear Implants

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Communication is Key!!

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DEVICE CHECK: Hearing Aids Cochlear Implants

Information/Troubleshooting

Name: ________________________ DOB:__________ Year:_______ Audiologist:______________________ Phone:__________________ E-Mail:__________________________

Device Make:____________________ Model:___________________ Serial Numbers

Serial Numbers

Right:_________________ Left:__________________

Settings:

Program: Right _________ Left___________ Volume: Right _________ Left___________