Hearing Aids

2. HEARING AIDS

3. PRESENTER:
Maliha Farooqui
Syeda Wajeeha
Shumaila Sheikh
Yasmeen Jamil
Rahat Umer
Asma Agha

4. THE BASIC INFORMATION YOU NEED TO KNOW
MALIHA NIZAM

5. WHAT IS HEARING AID?
A hearing aid or deaf aid is an electro
acoustic device which is designed to amplify
sound for the wearer, usually with the aim of
making speech more intelligible.

7. WHEN IT USED?
 When any problem in the flow of acoustic
energy through different parts lead to hearing
problem.
Ear is the most important sensory organ for
communication.
 Human Ear consisting three parts
 Outer Ear
 Middle Ear
 Inner Ear

8. DIAGNOSIS OF HEARING DISORDER.
 Different Audiometric test
help in diagnosing the
hearing disorder.

9. DEGREES OF HEARING LOSS

10. FOUR TYPES OF HEARING LOSS
 Conductive Hearing Loss
Hearing loss caused by something that stops sounds from getting
through the outer or middle ear. This type of hearing loss can
often be treated with medicine or surgery.
 Sensorineural Hearing Loss
Hearing loss that occurs when there is a problem in the way the
inner ear or hearing nerve works.
 Mixed Hearing Loss
Hearing loss that includes both a conductive and a sensorineural
hearing loss.
 Auditory Neuropathy Spectrum Disorder
Hearing loss that occurs when sound enters the ear normally, but
because of damage to the inner ear or the hearing nerve, sound
isn't organized in a way that the brain can understand.

11. METHODS
Auditory Brain:
A- hearing Aid:
 Conventional Hearing Aid
 Bone Anchored Hearing Aid
 Implantable Hearing Aid
B- Implant
 Cochlear Implant
 Brainstem Implant
C- Assistive Device For The Deaf

12. HEARING AID
DEVICE TO AMPLIFY SOUND ---3 PARTS
 Microphone: pick up sound and convert to
electrical impulses.
 Amplifier: magnifies electrical impulses
 Receivers: convert electrical impulses back to
sound
Types
 Conductive hearing Aid
 Bone conductive hearing Aid

13. Bone Anchored Hearing Aid
Based on the principle on the bone conduction
Candidacy profile.
 Chronic inflammation or the infection of Air
canal
 Children with malformed or absent outer canal
 Unilateral Deafness
BAHA consisting:
Titanium Fixture
Abutment
Sound processor

14. COCHLEAR IMPLANT
 Electronic device- electrical stimulation of
auditory nerves
 Components
1- External:
 sound processor
 Mic
 transmitter
2- Internal:
 Receiver/ stimulator
 Electrode array

15. ASSISTIVE DEVICE
Help in special difficult situations warm of danger
signals
3 Group
1. Assistive listening devices and systems
2. Altering devices
3. Telecommunication devices
Training
Speech reading
Auditory training
Speech conversation

17. IDENTIFICATION OF DIFFERENT TYPES
SYEDA WAJEEHA

18. WHAT ARE HEARING AIDS?
 Hearing aids are sound-amplifying devices
designed to aid people who have a hearing
impairment.

19. SIMILARITIES OF HEARING AIDS:
 Most hearing aids share several similar
electronic components, including a
microphone that picks up sound; amplifier
circuitry that makes the sound louder; a
miniature loudspeaker (receiver) that delivers
the amplified sound into the ear canal; and
batteries that power the electronic parts.

20. HEARING AID DIFFER BY:
 Design
 Technology used to achieve amplification
(i.e., analog vs. digital)
 Special features

21. TYPES OF HEARING AIDS:
 Analog hearing aids; and
 Digital hearing aids

22. ANALOG HEARING AID:
 Analog hearing aids make continuous sound waves louder.
 These hearing aids essentially amplify all sounds (e.g., speech
and noise) in the same way.
 Some analog hearing aids are programmable.
 They have a microchip which allows the aid to have settings
programmed for different listening environments, such as in a
quiet place, like at a library, or in a noisy place like in a restaurant,
or in a large area like a soccer field.
 The analog programmable hearing aids can store multiple
programs for the various environments.
 As the listening environment changes, hearing aid settings may
be changed by pushing a button on the hearing aid.
 Analog hearing aids are becoming less and less common.

23. DIGITAL HEARING AID:
 Digital hearing aids have all the features of analog programmable
aids, but they convert sound waves into digital signals and
produce an exact duplication of sound.
 Computer chips in digital hearing aids analyze speech and other
environmental sounds.
 The digital hearing aids allow for more complex processing of
sound during the amplification process which may improve their
performance in certain situations (for example, background noise
and whistle reduction).
 They also have greater flexibility in hearing aid programming so
that the sound they transmit can be matched to the needs for a
specific pattern of hearing loss.
 Digital hearing aids also provide multiple program memories.
 Most individuals who seek hearing help are offered a choice of
only digital technology these days.

24. DIFFERENT STYLES OF HEARING AIDS
YASMEEN JAMIL

25. BEHIND-THE-EAR (BTE) AID:
 It have all the features of analog programmable aids, but they
convert sound waves into digital signals and produce an exact
duplication of sound.
 Computer chips in digital hearing aids analyze speech and other
environmental sounds.
 The digital hearing aids allow for more complex processing of
sound during the amplification process which may improve their
performance in certain situations (for example, background noise
and whistle reduction).
 They also have greater flexibility in hearing aid programming so
that the sound they transmit can be matched to the needs for a
specific pattern of hearing loss. Digital hearing aids also provide
multiple program memories.
 Most individuals who seek hearing help are offered a choice of
only digital technology these days.

26. "MINI" BTE (OR "ON-THE-EAR") AIDS:
 A new type of BTE aid called the mini BTE (or "on-
the-ear") aid.
 It also fits behind/on the ear, but is smaller.
 A very thin, almost invisible tube is used to connect
the aid to the ear canal.
 Mini BTEs may have a comfortable ear piece for
insertion ("open fit"), but may also use a traditional
ear mold.
 Mini BTEs allow not only reduced occlusion or
"plugged up" sensations in the ear canal, but also
increase comfort, reduce feedback and address
cosmetic concerns for many users.

27. RECEIVER IN THE EAR (RITE) HEARING AIDS:
 Receiver in-the-ear (RITE) (or loudspeaker in-
the-ear) aids are often smaller than BTE aids
because some part of the device sits inside the
ear.
 Like open ear BTEs, they can be easier to put in
than an ear mould if you find fiddly tasks
awkward.
 There are different RITE hearing aids for
different levels of hearing loss.
 If your hearing loss is severe, you may need a
type where the receiver sits in an ear mould.

28. IN THE EAR (ITE) HEARING AIDS:
 These fit entirely into your ear.
 The working parts are either in a small
compartment clipped to the earmould or
inside the moulded part itself.
 ITE aids tend to need repairing more often
than BTE aids.

29. COMPLETELY IN THE CANAL (CIC) HEARING
AIDS:
 These are even smaller than ITE aids, so they
are less visible.
 They are unlikely to be suitable if you have
severe hearing loss or frequent ear infections.
 These hearing aids are contained in tiny cases
that fit partly or completely into the ear canal.
 They are the smallest hearing aids available and
offer cosmetic and some listening advantages.
 However, their small size may make them
difficult to handle and adjust for some people.

30. BODY WORN HEARING AIDS:
 These have a small box that you clip to your
clothes or put in your pocket.
 This is connected by a lead to the earphone.
 Some people find the controls less fiddly
than those on smaller hearing aids.
 Some body-worn aids are very powerful.

31. BONE CONDUCTION HEARING AIDS:
 These are for people with conductive hearing
loss or people who can't wear conventional
hearing aids.
 They deliver sound through the skull via
vibrations

32. DIFFERENT PARTS OF HEARING AIDS,
FAULT FINDING AND
MINOR REPAIR
SHUMAILA SHEIKH

33. HEARING AIDS:
DIFFERENT PARTS
 There are different types of hearing aid, but
they all have the same five key components.

34. DIFFERENT PARTS
 The microphone on the outside of the hearing aid
picks up sound from the air as it enters the ear and
converts sound waves into digital signals
 The amplifier strengthens the digital signals
 The speaker converts the digital signals into
vibrations that then pass through the inner ear to the
brain
 A tiny battery powers the hearing aid
 A microchip - a miniature computer that helps us
tune and personalize your hearing aid to your
individual needs

35. CIC HEARING AIDS PARTS
 CIC hearing aids has only few parts you can notice
and point out.
 Moreover, It varies from one device to another.
 Here are the basics and the most common parts
with a few words on the functionality of each part.

36. CIC HEARING AIDS PARTS
 Microphone
Trivial, it receives the sounds from the surroundings. Note that there is usually
only a single microphone on CIC devices. It limits some of the CIC abilities.
Other hearing aids can have directional microphones and get more out of the
sounds they receive.
 Battery compartment
The biggest of all CIC parts... Typically, it covers most of the front panel. You
have to fit a size 10 battery in, and be able to open it.
 Removal cord
A simple nylon cord with a tiny knob so you can take the thing out. Keep in mind
that CIC hearing aids are located deep in the ear canal. Once it is in you can
hardly see or touch it, let alone take it out. That's why they put this cord...
 Vent
The purpose of the vent is to prevent occlusion feeling. It enables air and sounds
to bypass the hearing aid. The vent hole on the diagram above is simply a tunnel
running through the hearing aid. On some CIC it looks a bit different but the
concept is the same: to enable ventilation.

37. HEARING AID REPAIRS
 Age and use can take their toll on hearing
aids, and while there’s always the option of
replacing a hearing aid that has become
damaged, sometimes it’s better to attempt
some common hearing aid repairs first.

38. HEARING AID REPAIRS
Common Hearing Aid Repairs
 Depending on the issue, it may be able to troubleshoot or
repair your hearing aid on their own. Here are a few
common hearing aid fixes you can try right now:
 Replace the battery
 Remove and reinsert your hearing aid
 Clean your hearing aid
 Replace the wax filter
 Open and close the battery compartment
 Check your input settings

39. HEARING AID FEATURES AND FITTING
RAHAT UMER

40. HEARING AID FEATURES
Directional microphones
 Sound from a specific direction amplified to a greater level
 May help listeners to understand speech in noisy environments
Feedback suppression
 Squeals suppressed when the hearing aid gets too close to the phone or
has a loose‐fitting ear mould
T‐coil (Telephone switch)
 Sound picked up from the telephone when switching to the "T‐ coil"
setting
 Help to reduce the chance of hearing aid "whistling“
 Also works well in environments (e.g., theaters, auditoriums, etc.)
where there is induction loop or FM installation

41. HEARING AID FITTING
 Get a medical check up from a licensed
physician to rule out any medical reasons for
hearing loss.
 In some cases, hearing loss is medically or
surgically treatable.
 Certain medical conditions may underlie the
person’s hearing loss.
 Seek hearing aid fitting from a licensed hearing healthcare
professional.
 Audiological exam, including hearing evaluation
 Provide proper gain and setting: Too much amplification may cause
discomfort & additional hearing loss.

42. HEARING AID CARE & MAINTENANCE
 Keep hearing aids away from any moisture and heat,
which may cause damage to the internal electronics.
 Clean hearing aids as instructed.
 Power consumption & battery safety:
 Turn off hearing aids when not in use.
 Keep batteries and hearing aids away from children
and pets.
 Visit the hearing healthcare professional on a regular
basis to have hearing aids inspected.

43. HEARING AID BENEFITS & LIMITATIONS
Benefits
 Ability to hear sounds that could not be heard previously,
and help oral communication
 Ability to hear speech over the telephone
Limitations
 Do not restore normal hearing
 All sounds, including background noise and undesired
sounds, are made louder.
 Sounds, including own voice, might seem too loud at first.
 May need to be replaced every several years

44. LEARNING TO LISTEN WITH HEARING AIDS
 Understand your hearing loss & set realistic expectations
 Allow yourself time to adjust and request fine‐tuning
 Involve your family members to understand hearing loss
and hearing aids
 Learn about communication strategies, including dealing
with background noise & utilizing visual cues
 Join support groups
 Learn about Assistive Listening Devices (ALDs)

45. HEARING AIDS VS. PERSONAL
SOUND AMPLIFICATION
PRODUCTS (PSAPS)
Hearing Aids
 Any wearable sound‐amplifying medical device
 Aiding persons with, or compensating for impaired hearing
PSAPs
 NOT medical devices; wearable electronic consumer products
 Amplifying environmental sound for non‐hearing impaired
consumers for use in a variety of listening situations
 Not intended or labeled to compensate for hearing loss

46. ASSESSMENT
ASMA AGHA

47.  When you visit the audiologist for the first
time, case history form must be fill out.
 A series of question to help the hearing
healthcare professional better understand
the medical and hearing history and health.
 A subjective account of the symptoms a
patient is experiencing so that it can use it in
conjunction with a physical exam to make a
diagnosis.

49. UNDERSTANDING CASE HISTORY FORM AND ITS
QUESTIONS
1. Do you or have you experienced ear pain, fullness or
blockage?
2. Do you or have you experienced any ringing,
whooshing, roaring or other sounds when a sound is not
actually present?
3. Have you ever had an ear infection or ear surgery?
4. Do you have hearing loss in your family?
5. What are your hobbies? What is your occupation?
6. Have you experienced dizziness or loss of balance?
What is/was that like?
7. What medications are you currently taking?
8. Questions on general health status?

50. CONCLUSION
Audiologic rehabilitation is “ any
activity, method, recourse,
technology and/ or a device that
facilitate or enhances
communication and participation in
an activities”