A new concept of bone conduction hearing aid that improves sound transmission at frequencies in all bands from low to high has been developed for the first time in the world by domestic medical ...

A new Bone Conduction Implant (BCI) hearing system was investigated by Sabine Reinfeldt. "This hearing aid does not require a permanent skin penetration, in contrast to the Bone-Anchored Hearing ...

And all for only $22 out-of-pocket. While only a Bluetooth speaker in its current form, we can see how the microphone in the speakerphone might be used to build a complete hearing aid on the cheap.

After over two decades of intensive research and development, a new bone conduction implant, the Sentio System, has now been approved for clinical use in both Europe and the United States.