Typically, the idea of hearing aids invokes the thought of conventional devices that boost sound through the canal of the ear. For people struggling with certain hearing impairments, such as relentless ear problems or unilateral deafness, a different solution might provide enhanced sound quality and user comfort: bone conduction hearing aids.
The Functionality of Bone Conduction Hearing Devices
With bone conduction hearing devices, the outer and middle ear are bypassed. Rather than depending on airwaves to transmit sound, these devices utilize the skull’s bones to direct vibrations directly to the cochlea, the inner ear’s sound-processing hub. This allows sound to get to the auditory nerve even when there is a blockage or injury in the ear canal. Think of it this way: If you’ve ever stopped up your ears and still heard your voice when talking, that’s bone conduction.
Distinction between Bone Conduction and Traditional Hearing Aids
Traditional hearing aids amplify sound and direct it through the ear canal. This works effectively for individuals who have sensorineural hearing loss, where the inner ear or auditory nerve is damaged. On the other hand, if there are problems with the external or middle ear caused by infection, fluid accumulation, or structural problems, standard hearing aids may not work efficiently or be comfortable. Bone conduction hearing devices are often a more reliable option in such situations as they steer clear of the problematic areas and transmit sound directly to the cochlea.
Bone Conduction Candidates
Bone conduction devices are helpful for:
- Sound waves are not able to pass through the outer or middle ear, resulting in conductive hearing loss.
- Persistent ear infections or drainage issues, where conventional hearing aids could worsen the condition.
- Individuals with misshapen ear canals or missing outer ears, who might not be candidates for traditional devices.
- Single-sided deafness (SSD), where one ear has severe hearing loss or no hearing. These devices provide a non-invasive alternative that is frequently more comfortable, especially for kids and adults who have recurring ear issues.
Implantable vs. Non-Implantable Options:
There are two primary classifications of bone conduction choices: Implantable and non-implantable devices.
- Non-implantable (worn externally): These are usually held in place with a headband, softband, or sticky pad. They are perfect for children, those trying out bone conduction for the first time, or people who are not prepared for surgery.
- Surgically embeded devices consist of a tiny device inserted beneath the skin, which is connected to a separate sound processor mounted outside the body. They usually provide more robust performance and reliability for long-term users. Your audiologist or ENT specialist can help decide which option is appropriate based on your age, anatomy, and hearing goals.
Key Benefits of Bone Conduction Hearing Devices
- Comfortable for sensitive ears– no need to put anything inside the ear canal
- Clear sound quality, despite having chronic ear problems
- Ideal for individuals with distinct physical characteristics – this option is particularly beneficial for individuals with congenital conditions impacting the outer ear or other anatomical variations.
- Enhanced communication is particularly advantageous in instructional settings, professional environments, or noisy surroundings
If you or your child struggles with hearing in one or both ears, especially due to persistent infections or conductive problems, bone conduction hearing devices might be worth exploring.
Book an appointment with an audiologist today to get further 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
