Non-pressure sensitive implantable microphone

摘要

An implantable microphone is described for use in hearing prosthesis systems. A cylindrical microphone housing has opposing circular cylinder ends and an interior volume containing an incompressible housing liquid. At least one housing membrane is on one of the cylinder ends and is in contact with the housing liquid and moveable in response to an acoustic signal outside the housing. An acoustic-electric transducer is coupled to the housing membrane for converting movement of the housing membrane into a corresponding electrical microphone signal.

主权项

1. An implantable microphone for use in hearing prosthesis systems, the microphone comprising:
a cylindrical microphone housing with opposing circular cylinder ends and having an interior volume containing an incompressible housing liquid; at least one housing membrane on one of the cylinder ends that is in contact with the housing liquid and moveable in response to an acoustic signal outside the housing; an acoustic-electric transducer coupled to the at least one housing membrane for converting movement of the housing membrane into a corresponding electrical microphone signal; an interior membrane within the interior volume of the microphone housing between the at least one housing membrane and the acoustic-electric transducer for coupling the movement of the housing membrane to the acoustic-electric transducer; and a bypass tube providing a fluid passage across the interior membrane.