Capacitive extensometer particularly suited for measuring in vivo bone strain
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United States of America Patent
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May 9, 2000
Grant Date -
N/A
app pub date -
Oct 8, 1998
filing date -
Oct 8, 1998
priority date (Note) -
Expired
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Abstract
The present invention provides for in vivo measurements of the principal strain magnitudes and directions, and maximum shear strain that occurs in a material, such as human bone, when it is loaded (or subjected to a load). In one embodiment the invention includes a capacitive delta extensometer arranged with six sensors in a three piece configuration, with each sensor of each pair spaced apart from each other by 120 degrees.
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