Patent ID: 9578425
Date: 2017-02-21
CPC Classifications: A61N,H04R

Claim:
1. An implantable hearing aid comprising: an implanted unit configured to be located beneath skin for electrical, mechanical, or acoustic sound stimulation; and an external unit configured to be placed outside the skin, said external unit is contained in a housing which is completely or partially surrounded by a shell, and comprises a sound processor containing microphones for registration of sound, a signal processor for processing of sound information, a modulator for modulation and control of an output signal, a battery for power supply, a transmitting coil for inductive transmission of the sound signal to the implanted unit and one or more external magnets, said one or more external magnets creating a mutual static mechanical retention force with one or more retention magnets in the implanted unit, and said mutual static and mechanical retention force retains said housing in place on top of said implanted unit, wherein said mutual static mechanical retention force thus created affects an electric switching device such that said electric switching device directly or indirectly activates power for the sound processor when said housing is installed on top of the implanted unit and directly or indirectly turns off/reduces the power supply when said housing is removed.