Hearing aid for deaf ear deafness (Machine-translation by Google Translate, not legally binding)

摘要

An auditory device, for the reeducation of the hearing of the deaf, which is essentially characterized by being formed by an elbow hollow enclosure, one of whose arms in the form of eight bulging, has a flat facet, and serves to hold it by gentle pressure and lace against the lateral walls of the central cavity of the pinna of the ear; this hollow and bulky arm has at its end a series, variable, side slits where sound waves penetrate that vibrate a tongue or inner lamella, which reinforces its volume and sends them along the smaller arm, which is tubular and with a terminal hole to project them on the eardrum; that is, this apparatus, in addition to acting as a trumpet, serves to subject a sustained massage to the eardrum, restoring its elasticity. (Machine-translation by Google Translate, not legally binding)