Lyric Hearing Aid

Lyric Hearing Aid

Manufacturer: InSound Medical, Newark, Calif.
Supply and design: Center for Medical Device Innovations
Price: $2,900-$3,600
This hearing aid doesn't need to be surgically implanted. It's worn deep in the ear canal all day and night, and its proprietary battery lasts 120 days. Patients pay a subscription fee. When the device runs out, a doctor can swap it out in 10 minutes.