A fixation element secures to a patient's ear an implantable microphone having a cylindrical housing part with an acoustic inlet membrane after insertion into a hole which crosses a rear bony wall of the patient's auditory canal. The fixation element has a cylindrical sleeve part which surrounds the...http://www.google.fr/patents/US5999632?utm_source=gb-gplus-shareBrevet US5999632 - Fixation element for an implantable microphone
