Active vibration attenuation for implantable microphone
First Claim
1. A system for isolating an implantable hearing aid microphone from non-ambient vibrations, comprising:
- an implant capsule for housing at least one hearing aid component subcutaneously;
a microphone supported relative to said capsule;
a motion sensor operative to generate a motion signal indicative of movement of said microphone; and
an actuator operative to apply a force between said implant capsule and said microphone in response to said motion signal.
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Accused Products
Abstract
The invention is directed to an implanted microphone having reduced sensitivity to vibration. In this regard, the microphone differentiates between the desirable and undesirable vibration by utilizing at least one motion sensor to produce a motion signal when an implanted microphone is in motion. This motion signal is used to yield a microphone output signal that is less vibration sensitive. In a first arrangement, the motion signal may be processed with an output of the implantable microphone transducer to provide an audio signal that is less vibration-sensitive than the microphone output alone. In another arrangement, the motion signal may be utilized to actuate at least one actuator. Such an actuator may be capable of applying a force to move the implantable microphone or an implant capsule so as to reduce movement of a microphone diaphragm relative to the skin of a patient which covers the microphone diaphragm.
79 Citations
18 Claims
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1. A system for isolating an implantable hearing aid microphone from non-ambient vibrations, comprising:
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an implant capsule for housing at least one hearing aid component subcutaneously; a microphone supported relative to said capsule; a motion sensor operative to generate a motion signal indicative of movement of said microphone; and an actuator operative to apply a force between said implant capsule and said microphone in response to said motion signal. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for attenuating vibration in an implantable hearing aid microphone, comprising the steps of:
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generating a motion signal indicative of movement of an implantable support member associated with an implantable microphone diaphragm; applying a force at least in part to said support member in response to said motion signal, said force being operative to reduce relative movement between said microphone diaphragm and tissue overlying said microphone diaphragm. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification