Passive vibration isolation of implanted microphone

Details Passive vibration isolation of implanted microphone Passive vibration isolation of implanted microphone

2007-07-10

2007-07-10

Lacyk, John P. (Department: 3735)

Surgery

Surgically implanted vibratory hearing aid

C381S071200, C181S175000

Reexamination Certificate

active

10983102

ABSTRACT:
A system for reducing the vibration sensitivity of an implantable microphone without an equal or greater reduction in sound sensitivity. The system reduces non-ambient vibrations by placing at least one compliant member into the path of transmission for tissue-borne vibration, but not into the path for ambient sound-induced vibration. More particularly, a compliant member is interposed along the path between a source of non-ambient vibration and an implanted microphone. In one aspect, a compliant base member is disposed between an implanted microphone and an implant wearer's skull. In another aspect, a microphone is compliantly suspended relative to an implant housing using a support membrane. In either aspect, the compliant member (i.e., base member and/or membrane) and the supported member (i.e., housing and/or microphone) define a supported system having a natural or resonant frequency. This natural frequency may be set to a value to advantageously isolate the microphone against transmitted vibration.

REFERENCES:
patent: 6137889 (2000-10-01), Shennib et al.
patent: 6456654 (2002-09-01), Ginesi et al.
patent: 2005/0101830 (2005-05-01), Easter et al.

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