Deaf-aid selection method

Baili Medical Supplies(Xiamen) Co., is aprofessional medical devices supplier based in Xiamen, China. Our main products: Protective Equipment, Hospital Equipment, First Aid Equipment, Hospital and Ward Facilities. 
Deaf-aid is a small loudspeaker, the original inaudible sound is enlarged, and the residual hearing of the hearing-impaired can be used to send the sound to the auditory center of the brain and feel the sound. Bring great convenience for the hearing-impaired.
Notes for adults choosing deaf -aids:
Deaf-aids on the market are divided into box type, behind-the-ear type, in-ear type and ear canal type.
1.A box deaf-aid, also called pocket or pocket, is slightly larger than a matchbox. The body is connected by a wire to the earphone, which is inserted into the external ear canal when used, and the box is placed in the chest pocket. Its advantages are less interference, larger power, easy to use, easy to adjust, the use of time is also long, the price is lower, can meet the deafness of the heavier people's needs. However, this hearing aid box in the pocket will produce friction sound, affect language discrimination, wearing is very conspicuous, so sometimes feel inconvenient.

2. Behind-the-ear deaf-aid appearance for 3 to 4 cm long curved hook shape, on the back of the ear, through a horn shaped ear hook and plastic tube to send sound into the ear canal. Its advantage is to do not have conductor, volume is cabinet, more hidden, interference is little, can increase function to listen to a telephone by installing induction coil. The disadvantage is that the ear mold needs to be specially prepared, which is not used and not easy to adjust.
3. Ear type and ear canal type deaf-aid is a small hearing aid, with small, hidden, no wires, without another ear mold, good hearing effect, can improve hearing and other advantages; But adjustment is not convenient, expensive, need to be customized according to each ear canal and ear cavity. Because the power is small, it is only suitable for moderate deafness, not suitable for severe and extremely severe deafness.
Deaf-aid matching the best to go to the hospital, to do a comprehensive examination of hearing, electrical audiometry and other instruments accurately evaluate the degree of deafness, and then select deaf-aid, if there is no local conditions of the hospital, hearing loss and deaf-aid power matching can be estimated according to the oral test. For example, can not hear whispering hearing loss of 30 ~ 40 decibels, can not hear the whispering hearing loss of about 40 ~ 50 decibels, at this time should choose low power and power deaf-aids; The hearing loss of people who can't hear ordinary speech is about 50 ~ 60 decibels, and the hearing loss of people who can't hear loud speech is 60 ~ 70 decibels. Medium power and high power deaf-aids are optional. People who can not hear loud shouts, hearing loss of 70 ~ 80 decibels, the selection of medium and high power deaf-aids; Full shout can not hear the hearing loss of about 80 ~ 90 decibels or higher, optional high-power and extra-large power deaf-aids.
Children matching deaf-aid matters needing attention
Children's "hearing loss" is often divided into treatable and incurable conditions. Curable deafness, such as otitis media and earwax embolism, can be cured by anti-inflammatory needles or cleaning the ear canal. If deaf-aids are hard matched, the sound amplified by deaf-aids will cause hearing damage to children.
Because children's expression ability is weak, the examination is not easy to cooperate, and children's hearing sometimes has a certain volatility, an examination can not easily draw conclusions. Parents should take their children to do several more examinations, at least two relevant examinations in the regular hospital, in order to decide whether to match a deaf-aid for children. When wearing a deaf-aid, do not only consider beautiful, think that the child wearing a larger deaf-aid is not good-looking. In fact, matching not suitable deaf-aids will affect children's hearing and pronunciation. Wear hearing aid 1 ~ 2 months later, be sure to go to the hospital for hearing test, in order to timely adjustment. After wearing deaf-aids, children from the silent world to hear sound, there is a slow adaptation process, parents should insist on language training for children, but do not rush to success, after training, children generally wear 3 ~ 4 months after beginning to learn to speak.