Description of seven different hearing aid featuresCindy
There are many styles of hearing aids. The hearing aids of each style may be different. What are the characteristics? Here, Huizhou Jinghao Medical will come to you to find out:
▲Box hearing aid
It looks like a miniature radio.The microphone, amplifier and battery are placed in a box, worn in the chest pocket, and a small wire is used to connect the hearing aid to the earphone attached to the ear mold.Because of its large size, such hearing aids can be made into high-power, wide-frequency, multi-function adjustment equipment, and the price is low, the switch knob is large, easy to use, and convenient to maintain.It is more suitable for the elderly who are more than severely sputum and who are less flexible in deaf children and hand activities.Its shortcomings are eye-catching and cumbersome, so some people don’t like it.
▲ behind the ear hearing aid
The shape is similar to banana shape, compact pocket, microphone, amplifier, battery and tone adjustment, peak clipping device and receiver are mounted in a small box about 4cm long and 1.5cm wide, hanging behind the ear, more beautiful, but the ear-back hearing aid Different types of power, etc., are currently considered to be a type of hearing aid that is ideal for both deaf children and deaf people.It is popular because of its high power, small size, low noise, small distortion and beautiful appearance.The child’s auricle is small, the ear-back hearing aid can’t be hung up, it should be hung behind the ear when using it, then put the earplugs, and then adjust the knob is more troublesome, especially for the elderly.
▲In-ear hearing aid (CE)
It is a relatively small type of hearing aid, and the outer casing is customized according to the patient’s ear.It can be placed in the ear cavity and the external auditory canal without any wires or hoses. It is very concealed and light. It is an achievement of miniaturization of hearing aids for more than ten years.Due to its small size, it is easy to lose, its power is small, its amplification and frequency range are limited, and there is often no telephone induction coil, so the application is also limited.At present, the advent of mid-power, medium-high power, medium-high power in-ear hearing aids provides convenience for deaf patients.One factor that affects the use of various types of ear hearing aids is that the microphone is close to the receiver and is prone to feedback.
▲ ear canal hearing aid (CC)
The in-ear hearing aids are small, customizable, and standard.This kind of hearing aid is placed in the external auditory canal, so it is difficult for outsiders to see.It is the achievement of miniaturization of hearing aids in recent years.At present, the advent of medium-power, medium- and high-powered ear canal hearing aids provides convenience and aesthetics for deaf patients.
▲ Complete ear canal hearing aid (CIC)
It is a kind of invisible hearing aid that is placed directly in the ear canal without any wires or hoses. It is very concealed and light.The shell uses high-intensity anti-allergic materials.The miniaturization of electronic circuits has led to dramatic changes in the manufacture of hearing aid devices, making the volume of high-quality amplifying devices almost invisible, and the amplification performance is closer to the physiological characteristics of normal human ears.
▲ glasses hearing aid
It is to hide the original device in a larger number of frames, which is also a requirement for aesthetics.Its performance is similar to that of the behind-the-ear type, but because the microphone and the earphone are placed separately, the gain and output are higher than that of the behind-the-ear hearing aid.Suitable for deaf who often wear glasses.Disadvantages: Each time the glasses are removed, the hearing aids are also away from the ear. The patient’s hearing is restored. The length of the temples is long and the leads of the hearing aids are long. The leads are easy to break.In order to ensure the effect of the hearing aid, it is necessary to fix the position of the spectacle frame. This is very troublesome and needs to be done by a technician equipped with a hearing aid, so it has been basically eliminated at home and abroad.
▲Bone conduction hearing aid
The bone conduction hearing aid does not directly produce sound, but produces audio mechanical vibration.Therefore, its function is to press it with the head clip to the mastoid in the ear. The mechanical vibration of the bone guide passes through the skull, and the inner wall of the cochlear bone transmits the inner ear to make people hear the sound.The two conduction modes of human hearing—the air conduction and the bone conduction—are far lower than the air conduction in terms of efficiency.Therefore, bone conduction hearing aids are used only when the air conduction hearing is extremely poor or completely disappeared or there are tinnitus, ear canal stenosis, and bone conduction hearing is still good.Therefore, the bone conduction hearing aid is suitable for some patients with congenital external ear hypoplasia (outer ear canal closure, no auricle, etc.) purulent otitis media, external auditory canal with pus outflow, traumatic ear canal stenosis mixed sputum, etc. are not suitable for patients with air conduction hearing aids.
▲ non-wearing hearing aid
There are two types of hearing trainers and collective hearing aids.The hearing trainer has a maximum output with a wide and flat frequency response characteristic.The collective hearing aids are similar to the electro-acoustic characteristics of the language training device. They are designed to accommodate 3 to 10 deaf children and are suitable for deaf students.But these hearing aids limit the freedom of the user to act.Therefore it is impossible to use for a long timeNowadays, there are many FM wireless launching large-function hearing aids, and users can move freely.