Middle ear implants (MEIs) such as VSB
® (Vibrant soundbridge), BB
® (Bonebridge) and the BAHA
® (Bone-anchored hearing aid) osseointegrated implant for bone conduction are attractive and alternative treatments for patients with conductive, sensorineural or mixed hearing loss who do not benefit from, or who choose not to wear, conventional hearing aids (HAs). Recent studies have suggested that MEIs and BAHA can provide better improvements in functional gain, speech perception and quality of life than HAs, while some definite risks associated with the surgery should be taken into consideration, including bleeding, wound infections, facial nerve or chorda tympanic nerve damage, dysfunction of the middle or inner ear, and the future risk of device failure/explantation. Furthermore, some types of MEI may involve restricted access to MRI scans. In the future, it is likely that there will be an increasing population even in Japan that will meet the new criteria for these implantable hearing devices. However, the long-term efficacy and safety of these devices should be established.
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