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United States of America Patent
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Issued Date -
May 20, 2004
app pub date -
Dec 29, 2003
filing date -
Dec 19, 2000
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A glucose sensor in the form of a skin patch 2 has a microneedle 4 which painlessly penetrates the skin to draw out interstitial fluid. The interstitial fluid passes to a common entrance port 7. A series of microchannels 8 is provided on the skin patch. The fluid drawn onto the patch is selectively switched between a number of microchannels 8 by means of electro-osmotic pumps 10 and hydrophobic gates 12. Each microchannel 8 has an electrochemical detector 11 for sensing gluocse concentration. Also disclosed is a monlithic device with an integrated lance 83.
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