Method and device for detecting extravasation
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United States of America Patent
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Jul 30, 2002
Grant Date -
N/A
app pub date -
Feb 28, 2001
filing date -
Feb 28, 2001
priority date (Note) -
Expired
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Abstract
A method and device for detecting extravasation employs a non-invasive sensor system deployed on the skin to identify changes in both subcutaneous interstitial fluid pressure and skin temperature. Preferably, the system monitors the sensor system outputs to identify a sequence of a skin temperature drop followed by a interstitial fluid pressure increase. This pattern is distinctive of the occurrence of extravasation, thereby providing very reliable detection. Most preferably, a simple sensor structure based upon multiple piezoelectric film sensors is used.
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