Usually, the idea of hearing aids invokes the thought of conventional devices that boost sound through the canal of the ear. For people struggling with specific hearing impairments, such as persistent ear problems or unilateral deafness, a different option may provide enhanced sound quality and user comfort: bone conduction hearing aids.
The Functionality of Bone Conduction Hearing Devices
Bone conduction hearing devices work by bypassing the outer and middle ear. Rather than relying on airwaves to transmit sound, these devices utilize the head’s bones to direct vibrations directly to the cochlea, the inner ear’s sound-processing center. This allows sound to get to the auditory nerve even when there is a blockage or injury in the ear canal. Consider this example: When you put your hands over your ears and still manage to hear the sound of your own voice when talking, that’s an example of bone conduction at work.
Bone Conduction vs. Traditional Hearing Aids
Conventional hearing aids boost sound and funnel it through the ear canal. This works well for individuals with sensorineural hearing loss, where the inner ear or auditory nerve is compromised. On the other hand, if there are problems with the outer or middle ear caused by infection, fluid accumulation, or structural problems, standard hearing aids might not work well or be comfortable. Bone conduction hearing devices are often a more reliable alternative in such scenarios as they steer clear of the problematic areas and transmit sound directly to the cochlea.
Bone Conduction Candidates
Situations where bone conduction devices are appropraite:
- Conductive hearing loss, when sound has difficulty moving through the outer or middle ear at all.
- Persistent ear infections or drainage issues, where traditional hearing aids could worsen the condition.
- Individuals with malformed ear canals or missing outer ears, who might not be candidates for traditional devices.
- Single-sided deafness (SSD), where one ear has profound hearing loss or no hearing. These devices offer a non-intrusive option that is frequently more comfortable, especially for individuals, both young and old, who experience frequent ear issues.
Options that include implantable and non-implantable techniques:
There are two main kinds of bone conduction hearing devices:
- Non-implantable (worn externally): These are usually held in place with a headband, softband, or sticky pad. They are perfect for children, those experimenting with bone conduction for the first time, or people who are not prepared for surgery.
- Implantable (surgically placed): These devices include a small implant under the skin that connects with an external sound processor. Long-term users often find that they provide more effective and dependable results. A professional assessment by an audiologist or ENT specialist will identify the most appropriate solution for you, taking into account your age, particular anatomy, and personal hearing objectives.
Key Advantages of Bone Conduction Hearing Devices
- Suitable for sensitive ears – does not require insertion into the ear canal
- Great audio quality remains consistent, despite ongoing issues with the ears
- Ideal for those with distinct physical attributes – this option is particularly beneficial for people with congenital conditions impacting the outer ear or other physiological variations.
- Improved communication is particularly advantageous in instructional settings, professional environments, or loud surroundings
If you or your child struggles with hearing in one or both ears, especially as a result of persistent infections or conductive issues, bone conduction hearing devices might be worth exploring.
Make an appointment with an audiologist today to get more information.
Sources: https://www.dukehealth.org/treatments/ear-nose-and-throat/bone-conduction-hearing-aid https://www.hopkinsmedicine.org/health/treatment-tests-and-therapies/baha–the-implantable- hearing-device https://www.ndcs.org.uk/advice-and-support/all-advice-and-support-topics/hearing-aids- implants-and-assistive-technology/ hearing-aids-and-implants/ bone-conduction-devices https://my.clevelandclinic.org/health/treatments/14794-bone-anchored-auditory-implant