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Open Fit Technology

Creation of open-fit hearing aids has become a revolutionary breakthrough in hearing loss correction. Open-fit technology has allowed developers to solve a whole range of problems that previously complicated using hearing aids. We can say that an open-fit aid combines in the most advantageous way the merits of other types of hearing aids, at the same time avoiding many drawbacks traditionally associated with using them. Open-fit hearing aids allow to solve the problem of hearing loss in the most comfortable and natural way. That is why open-fit technology has already been adopted by all the leading manufacturers of hearing aids.

What advantages do open-fit hearing aids have over other models? Hearing aids of classic configuration traditionally used earmoulds that followed the subtlest curves of the ear canal walls and as a result fully blocked it. Instead of such earmoulds open-fit hearing aids use ventilated earmoulds that are fitted completely in the ear. A hearing aid like this is as easy to use as a behind-the-ear aid and as compact as an in-the-canal one.

As a result of fundamental changes made by developers in the construction of open-fit hearing aids they have become maximally compact and hardly noticeable to other people. Thanks to a totally new kind of earmould with a number of ventilation holes, or vents, the ear as it were remains open, doesn’t perspire and tires less from wearing the hearing aid.

Open-fit technology totally excludes the so-called occlusion effect. Occlusion effect arises when the ear canal is blocked by the earmould or the case of an ITC hearing aid. Before the introduction of open-fit technology this problem could be solved only partially – by modifying individual earmoulds. Drilling holes in an earmould allows to reduce the effect of occlusion but not to eliminate it completely.

Using open earmoulds has also made it possible to avoid feedback effect that many hearing aid users know so well by the characteristic whistling sound and an echo of theirown voice.

Specialists who already have some experience of using open-fit aids for hearing loss correction believe that they perform in various acoustic conditionsmuch better than other types of hearing aids. Open-fit hearing aids cope better with transmitting sound in various acoustic conditions, provide maximally natural sounding and considerably enhanced speech discrimination.

Of course, open-fit hearing aids don’t suit everybody. Their “natural” sound ingachieved as a result of amplification by means of the auricle has its own drawbacks. Open-fit technology makes use of a natural resonator – the ear - to amplify sounds, and its amplifying ability is limited by a certain frequency range. As a result, open-fit hearing aids can’t provide marked amplification in the low-frequency part of the range, and thus don’t suit patients with severe low-frequency hearing losses. Besides, open-fit hearing aids have limitations concerning the power of amplification. Amplification to the level of above 20 dB may cause feedback effect. That is why open-fit aids are mainly recommended for use to people with mild and moderate high-frequency hearing losses.

Open-fit hearing aids are an ideal solution for people who previously refused to use any aids. They suit very well people with age-related hearing losses – especially those who haven’t used a hearing aid before.

On the whole, open-fit aids are distinguished by an extremely effective combination of working features – they are powerful, ergonomic and natural-sounding. They represent an ideal combination of attractive appearance, reliability and maximum comfort. Thanks to all these features open-fit hearing aids become ideal for many customers. That is why,if an open-fit hearing aid suits you from the medical point of view, it will be an excellent choice.

 

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