Congenital atresia of auditory canal

Congenital atresia of the ear canal and congenital malformation of the external ear are two frequently associated congenital diseases. They are congenital diseases formed when the external ear and the internal ear develop to the tympanic membrane at the same time in the process of parotid degeneration at the 20th day of pregnancy, but the parotid degeneration process is not completely completed. Patients with congenital atresia or stenosis of the ear canal are often accompanied by structural malformations of the external ear, that is, there are obvious differences in the structures of the auricle, the tragus and the earlobe. Ear canal deformity can be divided into stenosis and atresia. Ear canal stenosis is that the space of ear canal is not enough to provide enough air vibration, so that air vibration can not drive tympanic membrane vibration, resulting in conductive hearing loss in children. Atresia of the ear canal is that the ear canal is completely blocked by bone tissue, resulting in the failure of air conduction to drive the tympanic membrane to vibrate, resulting in conductive hearing loss in children. Both unilateral congenital atresia and bilateral congenital atresia should wear soft band bone guided hearing aids at birth or as soon as possible, so as to stimulate the child’s hearing on the affected side as much as possible before the doctor performs external auditory canal surgery, because the hand doctor kesser of our hospital requires that the child must be older than 5 years old for surgery, because 5-year-old children are easier to cooperate with the treatment and more tolerant