According to reports, 3 has a congenital external auditory canal atresia in 8 million live infants. The incidence rate of 0.05-0.1‰ is higher than that of both sides.
External auditory canal blockage hinders sound transmission and often has a certain degree of hearing loss; however, the resulting hearing loss is generally not severe and the hearing aid can assist in improving the audibility.
How do external ear canal lockers choose the right hearing aid?
At present, the leading product of hearing aids is air-guided hearing aids. Regardless of whether it is behind the ear or in the ear, the sound hole needs to be placed in the external auditory canal. The amplified sound needs to be transmitted through the external auditory canal to be heard; and when the external auditory canal is locked, The use of this type of air conduction hearing aid is limited and cannot be used normally. So how can the problem be solved?
Solution 1: Bone conduction hearing aid
After the external auditory canal is locked, the results of the bone conduction test in the hearing test are very important; if the bone conduction value is normal or only slightly decreased, the bone conduction hearing aid can be selected; the main styles are: bandage type, glasses type, etc.;
The shock absorbers of such hearing aids are placed on the humerus or skull. The sound is bypassed by the external auditory canal and the middle ear, and transmitted directly into the inner ear for hearing; because the vibrator exerts some pressure on the tibia or skull during the wearing process. Long-term use comfort and concealment are also poor.
Option 2: bone anchored hearing aid
For external auditory canal atresia, the bone conduction test results are moderate, or only mild/normal, and a surgically implantable bone-anchored hearing aid (BAHA) can be selected; such hearing aids are fixed in the skull by surgery, so that the head is not Causes stress and creates discomfort; just improper surgical wound care is more prone to inflammation, and concealment is also general.
Option 3: Reconstruction of the external auditory canal
At the same time, the external auditory canal is often accompanied by middle ear malformation; surgical reconstruction of the external auditory canal and tympanic membrane is conducive to the transmission of sound, which can improve hearing to a certain extent; if there is still hearing loss after surgery, regardless of the degree of bone conduction loss, Improve your listening ability by selecting an in-ear air-guided hearing aid; high comfort and high concealment.
Jinghao medical hearing aid reminder: hearing aids need to be professionally “fitted”, it is very important to choose a professional hearing aid fitting center and hearing aid fittings! All patients and friends have any hearing problems can call the Jinghao medical consultation, or personally Come to the fitting center experience. Hearing aid free consultation phone: +86-18566295705
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