How is the hearing aid ear mold made?

The ear mold has a soft and hard part. Of course, the acoustic effect is also different. When the sound hole of the soft ear mold passes through the sound, the high frequency sound is too refracted to be gentle, so the soft ear mold naturally softens the passing sound. Hard ear molds are frequently refracted at high frequencies and are highly susceptible to distortion, and soft ear molds are easier to pass in low frequency sound conduction than hard ear molds. Undoubtedly, soft ear molds are of course the first choice when making ear molds. Another advantage is that soft ear molds have stronger ability to suppress howling than hard ear molds, and are more suitable for use with high-power hearing aids.

A complete ear impression mold must have the following characteristics: it has a complete triangular arm ear cavity, including the tragus, the ear cavity, the ear wheel, the tragus and the second curve parallel, the impression surface is smooth, wrinkles Do not overdo it, there is no cure.

The ear mold should have good airtightness, stability, comfort, beltability and directionality. First, set the plan according to the customer’s situation, such as: the length of the ear mold, whether it is open, etc. Second, get a qualified ear sample Third, the ear mold is made, and soft and hard ear molds are produced in different situations, such as thermocoagulation, self-coagulation, photocoagulation, etc.

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