Characteristics of different hearing aids

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▲ < a href = "http://www.sqhearing.com/tlkp/533.html" target = "blank" > box hearing aid

It looks like a mini radio. The microphone, amplifier and battery are all placed in a box, which is worn in the chest pocket. A small wire connects the hearing aid to the earphone attached to the ear mold. Because of its large volume, the hearing aid can be made into a high-power, wide-band sound, multi-functional adjustment device, and the price is low, the switch knob is large, the use is convenient, and the maintenance is convenient. Most of them are suitable for the deaf children and the old people with less flexible hand movement. Its disadvantage is striking and cumbersome, so some people don’t like it.

▲ ear back hearing aid

The shape is similar to banana shape, small and pocket, microphone, amplifier, battery, tone adjustment, peak clipping device and receiver are all installed in a small box about 4cm in length and 1.5cm in width, hanging behind the ear, which is more beautiful, but the power of ear back hearing aid and other different types are currently considered to be ideal and larger for both deaf children and deaf people. Because of its large power, small size, small noise, small distortion, beautiful appearance, it is popular. Children’s ear is small, ear hearing aids can not be hung up. When used, hang them behind ears, then put them into earplugs. Then adjusting knobs is more troublesome, which is especially inconvenient for the elderly.

▲ in ear hearing aid (CE)

It is a kind of miniature hearing aid, and the shell is customized according to the patient’s ear sample. It can be completely placed in the cavity of the concha and the external auditory canal without any wires or hoses. It is very hidden and light. It is the achievement of miniaturization of hearing aids in the past ten years. Because of its small size, easy to lose and small power, its amplification and frequency range are limited, in which the telephone induction coil is often not installed, so its application is also limited. At present, the appearance of middle power, middle power and middle power hearing aids provides convenience for deaf patients. One of the factors that affect the effect of various types of hearing aids is that the microphone is close to the receiver, which is easy to produce feedback

▲ ear canal hearing aid (CC)

The binaural hearing aid is small in size and can be customized or standard. This kind of hearing aid is placed in the external auditory canal, so it is difficult for outsiders to see it. It is the achievement of miniaturization of hearing aids in recent years. At present, the appearance of middle and high power hearing aids provides convenience and beauty for deaf patients.

▲ complete ear canal hearing aid (CIC)

It is a kind of invisible hearing aid, which is directly placed in the ear canal without any wires or hoses. It is very hidden and light. The shell is made of high-strength anti allergy material. The miniaturization of electronic circuits has led to a great change in the manufacture of hearing aids, making the volume of high-quality amplification devices almost invisible, and its amplification performance is closer to the physiological characteristics of normal human ears

▲ glasses hearing aid

The original device is hidden in a larger spectacle frame, which is also applicable to aesthetic requirements. Its performance is similar to that of the ear back type, but the gain and output of the microphone and headphone are higher than that of the ear back type hearing aid because they are placed separately. It is suitable for the deaf who often wear glasses. Disadvantages: the hearing aid also leaves the ear when the glasses are removed each time, the patient’s hearing is restored, and the lead of the hearing aid is also longer when the glasses are removed Long lead is easy to break. In order to ensure the effect of hearing aid, it is necessary to fix the position of spectacle frame well, which is very troublesome. It needs to be done by the technician equipped with hearing aid, so it has been basically eliminated at home and abroad

▲ bone guided hearing aid

Bone conduction hearing aid does not produce sound directly, but produces mechanical vibration of audio frequency. Therefore, its function is to press it on the mastoid process behind the ear with a head clamp. The mechanical vibration of bone conduction device transmits sound to the inner ear through the skull and the cochlear bone wall. Compared with air conduction and bone conduction, the efficiency of bone conduction is far lower than that of air conduction. Therefore, bone conduction hearing aid should be used only when the air conduction hearing is very poor or completely disappeared, or there are tinnitus, ear canal stenosis and other diseases, and the bone conduction hearing is still good. Therefore, bone guided hearing aids are suitable for some patients with congenital hypoplasia of the external ear (closed external auditory canal, no auricle, etc.), suppurative otitis media, pus outflow from the external auditory canal, mixed deafness caused by trauma, etc. which are not suitable for patients with air guided hearing aids.

Non wearing hearing aid

There are two kinds of hearing trainers and collective hearing aids. The hearing trainer has a wide and flat frequency response characteristic of the maximum output. The collective hearing aid is similar to the language training device in electroacoustic characteristics. It is designed for 3 to 10 deaf children. It is suitable for deaf school students. But these hearing aids limit the freedom of movement of users. Therefore, it is impossible to use it for a long time. Now there are many FM wireless transmitting hearing aids, users can move freely.

Jinghao hearing aid reminder: hearing aid wearing requires professional “matching”, so it is very important to choose a professional hearing aid matching center and a hearing aid tester! If you have any hearing problems, you can call Jinghao for consultation, or come to the matching center for experience. Hearing aid free consultation Tel.: + 86-18566295705

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