The DCC K.K.'s PRESTIN hearing aid relies on bone conduction and a technology called Giant Magnetostriction.
A bone conducted hearing system converts acoustic sounds to vibrations through a transducer, which are then sent directly to the cochlea. This does not create any excessive force on the hair cells, which are the sensory receptors of hearing and each hair represents a particular frequency.
The biggest advantage of Giant Magnetostriction is that it has a 10,000 to 100,000 times faster response speed in comparison to Electromagnetic Induction/Piezoelectricity. This results in a significant improvement in hearing in comparison to existing hearing aids.
Data from forty cases of patients with moderate to severe hearing loss were collected and analyzed. The clinical data, which far exceeded existing performance limitations of existing hearing aids, were reported to the Japanese Ministry of Health, Labour and Welfare in April, 2014.
The clinical data from patients showed PRESTIN bone conducted hearing aid can be used for some types of sensorineural hearing loss.