Implantable capacitive pressure sensor apparatus and methods regarding same
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United States of America Patent
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Apr 23, 2013
Grant Date -
Aug 2, 2012
app pub date -
Jan 28, 2011
filing date -
Jan 28, 2011
priority date (Note) -
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Abstract
An implantable capacitive pressure sensor apparatus and method for making such an apparatus includes a first pressure sensor portion and a second pressure sensor portion. The first pressure sensor portion includes a diaphragm electrode connectable to ground (e.g., the diaphragm electrode being positioned in close proximity to the body when implanted therein such that the diaphragm electrode is deformable in response to pressure applied thereto by the body). The second pressure sensor portion includes a signal electrode (e.g., wherein the first pressure sensor portion and the second pressure sensor portion are coupled such that a gap is provided between the diaphragm electrode and the signal electrode) and an insulator material. The signal electrode is provided on and in direct contact with the insulator material to electrically isolate the signal electrode such that parasitic capacitance effects on the signal electrode are reduced.
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