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Hearing Aid Types

Completely in-the-canal (CIC) Receiver in the ear (RITE)
CIC hearing aids Completely in the canal hearing aids are the smallest of all the models that are available today.

They fit completely into your ear canal (hence the name!) and are virtually invisible to other people - usually only a small plastic wire protrudes from your canal and maybe be visible to people who are looking very closely at your ear.

The plastic wire is necessary to enable you to pull the hearing aid out of your ear – it sits too far down the canal for you to be able to pull it out without the wire.
CIC hearing aids At a first glance, these devices are similar to the BTE aid.

There is however one crucial difference:
The speaker ('receiver') of the hearing aid is placed inside the ear canal of the user and thin electrical wires replace the acoustic tube of the BTE aid. There are some advantages with this approach: Firstly, the sound of the hearing aid is arguably smoother than that of a traditional BTE hearing aid. With a traditional BTE hearing aid, the amplified signal is emitted by the speaker (receiver) which is located within the body of the hearing aid (behind the ear).
In-the-ear (ITE) Behind-the-ear (BTE)
CIC hearing aids ITEs are custom-made to fit securely in your ear. Available in a variety sizes from full-shell ITEs, to smaller
In-The-Canal (ITC) styles, to the tiny Completely-In-the-Canal (CIC) styles. They are suitable for mild to severe hearing losses.
CIC hearing aids Ultra-small behind-the-ear (BTE)
An ultra-small Behind-The-Ear (BTE) style is lightweight and sits snugly behind the ear. 
It connects to the ear with a nearly invisible thin tube which inserted in the ear canal.  These instruments are ideal for style-conscious, first time and experienced wearers and fits mild to severe hearing loss.

Traditional behind-the-ear (BTE)
A traditional BTE is worn comfortably behind the ear while amplified sound travels down a tube to a customized earmold that fits securely into the ear. Because they are larger size they can accommodate a bigger battery for longer life and larger amplifiers for maximum amplification. BTEs are compatible with most assistive listening devices and suitable for mild to profound hearing losses.


History of hearing aids

A hearing aid is an electroacoustic body worn apparatus which typically fits in or behind the wearer's ear, and is designed to amplify and modulate sound for the wearer.

Hearing horn

Earlier devices, known as an "ear trumpet" or "ear horn", were passive funnel-like amplification cones designed to gather sound energy and direct it into the ear canal.

Similar devices include the bone anchored hearing aid, and cochlear implant.
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