FOREIGN BODY RESPONSE DETECTION IN AN IMPLANTED DEVICE
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United States of America Patent
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Issued Date -
Apr 3, 2008
app pub date -
Sep 26, 2007
filing date -
Sep 29, 2006
priority date (Note) -
Abandoned
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Abstract
A medical device with an implantable portion comprises, in part, an encapsulation sensor. In preferred embodiments, the encapsulation sensor comprises at least two electrodes and a circuit configured to sense impedance between the electrodes. Cell accumulation and fibrous capsule growth causes an increase in impedance. Functionality of the sensor can be evaluated based at least in part on the sensed impedance.
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