Hearing aid

Details Hearing aid Hearing aid

H - Electricity

04

R

181/22

H04R 25/00 (2006.01) H04R 25/02 (2006.01)

Patent

CA 1258434

ABSTRACT OF THE DISCLOSURE A hearing aid has a housing which includes electronic components such as a microphone, amplifier, power source and ear- phone, as well as suitable structure for mounting and retaining those components. The housing is inserted in a cavity in an oto- plastic shell. The exterior of the otoplastic shell is matched to the shape of the auditory canal of the user. The cavity of the otoplastic shell in which the housing is received tapers to a smallest diameter at a sound discharge end of the shell. The hous- ing also has a smallest diameter at this location. A releasable latch is disposed in the region of the smallest diameter for hold- ing said housing in place within the shell during use, but permit- ting removal of the housing for repair or replacement without dam- aging the shell.

512374

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