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DCC K.K. is a company for the development and manufacturing of the Prestin® hearing devices.

The world FIRST and ONLY
“Listening with the brain”
Sensorineural Hearing Impairment Aids
PRESTINTM



DCC K.K. Japan
https://prestin.jp


Did you know that presbyacusis and noise-induced hearing loss problems that cannot be solved by modern medical treatment?

Hardness of hearing is the most common of human ailments, with 80% being perceptive, and 20% air conductive deafness. (When illness presents both perceptive and air conductive symptoms, it is called combined hearing loss.)

While air conductive hearing loss is treatable by surgery, there is no medical treatment for perceptive hearing loss.
Currently available hearing aids are specifically designed for air conductive hardness of hearing , (other than the low-quality Bone Anchored Hearing Aid (BAHA) implant) no efficacious hearing aids have yet been developed for the sensorial hearing problems. Sufferers of this type of illness have only one available choice if they wish to hear: major implant surgery in cochlea.

Perceptive deafness is due to the death of auditory hair cells, which do not regenerate.
Therefore, once this severe illness occurs hearing is never regained regardless of the age of the patient. It is divided primarily into presbyacusis and noise-induced hearing loss, but besides these two major causes sudden hearing loss, due to auditory nerve damage, also exists.

Presbyacusis is caused by hair cell extinction due to age-related elevation of the free radicals levels. 50% of individuals of 65 years or older in developed countries suffer from this ailment, which renders accurate perception of consonants more difficult, consequently resulting in a drastic fall in word intelligibility. Words sound like gibberish making conversation becomes impossible, television sounds are impossible to hear, and even listening to music is no longer an option.
Beyond merely being untreatable, slowing its rapid advance after first onset is impossible, and it cannot be halted.

Noise-induced hearing loss is caused by hair cell death induced by sound energies present when listening to music at high volumes or extended use of behind-the-ear hearing aids. In particular, the ability to hear the consonants "k, t, f, s, and th" which are situated at 3 KHz ~ 6 KHz is influenced noise-induced hearing which fall in the 4 KHz range, which hampers the ability to understand words and comprehend conversation, or hear melody and instruments. Brian Johnson of AC/DC , whose hearing loss was induced by listening to amplifiers at very high volume is a typical case.

Additionally, auditory hair cells necessarily produce large quantities of active oxygen when processing high volume sound, which has a deleterious effect leading to presbyacusis.
While it is possible to avoid exposure to the sound energy which damages hair cells, preventing progression, treatment is unavailable and recovery impossible for the patient's life span.
What is more, though using air conducted hearing aids (ACHA) for combined hearing loss provides temporary audibility, the extreme volume of these hearing aids actually leads to the further progression of the condition and utter deafness, so ACHA are extremely dangerous. An effective and safe next-generation hearing aid is needed for the approximate 3.2 million sufferers of hearing loss worldwide (at least 5.2% of global population, WHO survey).

In view of this, we will draw on WHO's review on its warning on noise induced hearing loss in order to better understand the elements needed to address this illness.

The PRESTINTM hearing aid for sensory hearing impairment

PRESTINTM has a 5 year successful track record with treating sensory hearing problems. As a result of our continuing research in pursuit of a safe, next generation hearing aids, we released the PRESTINTM Bone Conduction Sensory Hearing Aid in 2013, which is designed for making brain activate by supplied enough sound data, by uses an unique Prestin technology completely different than piezoelectiric or electromagnetic induction used in current Air Conductive Hearing Aid and Bone Conducted Hearing Aids.

The hallmarks of this device are:

1. Sounds are transmitted through even thicker skin, so clarity of consonants in the high range is maintained. Melodies in music and lyrics can be heard, while the subtly of in violin and the brilliance of cymbals is maintained.
2. The quantity of aural data is 1,000 times greater than conventional hearing aids, allowing or detailed sound clarity.
3. Vastly improved response speed (the time between when aural data enters the driver and actually exits as sound) is vastly superior (1 mil sec. in conventional hearing aids as opposed to our aid, at 1 micro seconds. This allows listeners to comprehend who they are trying to listen to even with multiple speakers present. This response time clears the threshold of 2/100,000 sec〜4/100,000 sec necessary for the brain to have the “Selective Attention” (known as “Cocktail Party Effect”). As a result of selective attention, noise levels are minimal just as with a subject with healthy hearing.
4. Surgical operations are not necessary.
5. The device is scalable to mass production.

Clinical Testing

A monitor was conducted at a national hospital of over 100 subjects with serious hearing problems using the proto type transducer.
With the support of the Ministry of Health, Labor and Welfare (MHLW), clinical data was taken on 40 subjects with severe or profound impairment (70dB~90dB) of varying causes, different age, and sex. This data was publicly approved by Kimitaka Kaga, Hon. Prof. Tokyo Univ., Former head director of the Japan Otological Society). The results showed that the device was effective in the majority of the sensory impaired patients (70dB~90dB). Under the hearing impairment classifications set forth by WHO 21~40dB is slight impairment, 41~60dB is moderate impairment, 61~80dB is severe impairment, and more than 81dB is profound impairment. Accordingly the device is fit for initial stage profound impairment.

In the United States, of the 24 million of subjects with sensory impairment in both ears, 19.2 million are due to presbyacusis (according to NHANES). These people cannot hear the voice of their loved ones, enjoy television or songs they have loved their whole life. Others include military retirees who suffer from hearing loss induced by weapon fire who lead restricted lifestyles.

MedGadget

The world first and only hearing aids for sensorineural hearing impairment “PRESTINTM transducer, was introduced at MedGadget in June, 2015.
Since then around 100 countries have visited DCC’s website, it implies that people all over the world are interested in this new technology of realistic solution for sensorineural hearing impairment.

New Development

We are developing an easy and comfortable headphone for 100 years old people. Furthermore, scholars and doctors have pointed out that functional impairments that exist in diseases like Alzheimer's may be treated by sound stimulation to the brain.

IF YOU HAVE SOME IDEA WITH PRESTIN,
PLEASE CONTACT US.

DCC K.K.

112-0003
2-4-4 3A, Kasuga, Bunkyo-ku, Tokyo, Japan

e-mail: information_in_english
(at mark)prestin.jp