UNIVERSAL HEARING-AID VOLUTE HOLDER WITH CONICAL EXTENSION BUT WITHOUT AUDITORY DUCT, AND GEOMETRICAL METHOD OF MAKING THE SAME

摘要

The present invention relates to a universal device which can be applied to the concha auricolae for supporting or housing transducers or hearing aids of different types. The characteristic of such device is that it is provided with a conical projection with two side grooves which makes the positioning into the ear steady. Another characteristic is that unlike the traditional volute holders it has no extension engaging the auditory duct. A further feature consists in that it has a shape such that it is universal and applicable to a large number of users. Therefore, it can be manufactured without using casts.