Cochlear implants need to be implanted in the scalp, which requires cochlear implants to use materials that are compatible with human tissues, so that rejection will not occur, such as platinum and gold, which are precious metals in themselves and have a high cost. There is also a patented cochlear implant coding technology, which can not be produced in every country, and the cochlear implant technology is very strict and takes a long time to make. According to the price, it can be judged that the cochlear implant used by Ms. Ma's children is an imported brand from Austria. This kind of cochlear implant has high performance, is very light and thin, can hardly be seen when implanted into the scalp, and the voice processor has good function, so it will be very expensive.
The cochlea converts sound waves into bioelectricity, and people can only hear the sound when they hear the nerve transmitted to the cerebral cortex. Cochlear implant is a method to treat severe deafness to total deafness. In vitro speech processor transmits coded electrical signals to human cochlea, and then stimulates auditory nerve fibers through implanted electrode system to restore or reconstruct the hearing function of deaf people. Cochlear implant is the only effective device that can restore hearing to patients with bilateral severe or extremely severe sensorineural deafness. ?
Cochlear implant needs 2? Make a small incision of 3 cm and implant the electrode into the cochlea. It takes a month to recover, and when you open it, you can hear the sound, so that people can communicate with others and receive education through language training. Is the service life of cochlear implant 30 years? Between 40 years. Its internal machine and external machine are attached to the ear by magnetic force, so Ms. Ma's child's cochlear implant is likely to be rubbed off while sleeping. She only needs to buy an external machine again, but it is also a big expense.
1? Five years old is a critical period for children's language learning, and it is particularly important to have a good listening comprehension ability. The establishment of human language center needs the help of auditory pathway. Only when the auditory pathway is stimulated by language can people establish a language center. If a person wears a cochlear implant over 5 years old, the sound he hears in the future can only meet the basic needs of life, such as someone calling his name and a car passing by, but this person may not be able to establish a complete language system. Ms. Ma's child is only three and a half years old, which is a good opportunity to learn a language. The loss of cochlea has a great influence on the formation of children's language center. The longer the hearing loss, the greater the impact on language function.