Bone-conduction hearing aid, head-worn

A bone-conduction hearing aid is an external, electrically powered device designed to assist individuals with hearing loss by converting sound into vibrations that travel through the skull bones to the inner ear. It is worn on the head, often via a headband or attached to spectacles, and uses a microphone to capture sound, an amplifier to process it, and a vibrator to deliver mechanical vibrations—typically via the mastoid bone—bypassing the outer and middle ear to stimulate hearing.

Devices in this category are regulated as medical devices based on their intended use and technological characteristics, with classification depending on the jurisdiction and risk profile. They are supplied as non-invasive, externally worn systems that do not require surgical implantation and are intended for use in conductive or mixed hearing loss scenarios where traditional air-conduction aids may be ineffective or unsuitable.