What are the good aspects of bone conduction hearing AIDS?

Under normal circumstances, we listen to sound in two ways: bone conduction and air conduction.

The so-called bone conduction mode is that the sound signal vibrates the skull and directly reaches the inner ear without passing through the outer ear and the middle ear; Air conduction mode means that sound is transmitted to the inner ear through the outer ear and the middle ear. Box-type, behind-the-ear type and in-the-ear type are all air conduction hearing AIDS. The air conduction hearing aid transmits the amplified sound signal to the external auditory canal. Bone conduction hearing AIDS are different. The bone conduction hearing aid ultimately produces not sound signals but vibration signals. There is no so-called "earphone" or earplug in bone conduction hearing aid, but a vibrator that can generate vibration signals. When the vibrator is pressed against the mastoid bone protruding behind the ear, the vibration of the vibrator will cause the skull to vibrate, and the signal will pass through the external ear and the middle ear. This is the advantage of bone conduction hearing aid, which directly reaches the inner ear. Because of this advantage, in theory, bone conduction hearing AIDS are especially suitable for patients with conductive deafness (that is, patients with external ear and middle ear problems). However, this is not the case. Bone-guided hearing is far less effective than air-guided hearing. The vibrator, the output device of bone conduction hearing aid, is not only unsightly, but also uncomfortable and difficult to be accepted by users. Generally speaking, we only recommend the use of bone conduction hearing AIDS for patients with abnormal external auditory canal or recurrent pus after external and middle ear infection, and they cannot wear earplugs, ear molds or in-ear hearing AIDS. In all other cases, or as long as you can use an air-conduction hearing aid, you should choose an air-conduction hearing aid first.