Classification of hearing AIDS:
1, box type
Also called pocket or pocket. The volume is like a cigarette box, hanging in a small bag or pocket on the chest. The main disadvantage of the main engine is that the lead is too long, unsightly and inconvenient. However, due to its large size, it can be equipped with a variety of function adjustment switches to provide better acoustic performance, and it is also easy to make it into a high-power type to meet the needs of severely deaf children.
Children and the elderly use it more, accounting for 5 ~ 10% of the demand. The hearing AIDS produced in China are mainly of this type. Because the components are large and easy to manufacture, it is more convenient and the cheapest to use ordinary No.5 battery (or No.7 battery).
2. Glasses style
Can meet the needs of patients with ametropia and deafness, and connect the end of one leg of ordinary glasses with the hearing aid behind the ear, which is convenient for maintenance and replacement. For people who are completely deaf in one ear, normal in the other ear or partially deaf in the other ear, a so-called signal crosslinking hearing aid is created.
Its main purpose is to help a person who is completely deaf in one ear to receive the sound stimulation of the completely deaf side, so as to facilitate safety and dialogue, and glasses hearing AIDS are more convenient to realize this function. This kind of hearing aid is not only used in air conduction mode, but also most suitable for making bone conduction hearing AIDS.
Extended data:
Hearing aid fitting crowd: All patients with hearing loss can fit hearing AIDS except those without medical symptoms. Wearing hearing AIDS can improve hearing to a certain extent, which is helpful for communication and learning. But it is also restricted by various factors. Even if different people have the same degree of hearing loss, the effect of using hearing AIDS is not exactly the same.
The same hearing loss, the same model, the effect of using hearing AIDS will be completely different.