DEVICES AND METHODS FOR DELIVERY AND/OR WITHDRAWAL OF FLUIDS AND PRESERVATION OF WITHDRAWN FLUIDS
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United States of America Patent
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Issued Date -
Oct 25, 2012
app pub date -
Apr 10, 2012
filing date -
Apr 11, 2011
priority date (Note) -
Abandoned
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Abstract
The present invention generally relates to systems and methods for delivering and/or withdrawing a substance or substances such as blood or interstitial fluid, from subjects, e.g., from the skin and/or from beneath the skin. In one aspect, the present invention is generally directed to devices and methods for withdrawing or extracting blood from a subject, e.g., from the skin and/or from beneath the skin, using devices containing a fluid transporter (for example, one or more microneedles), and a storage chamber having an internal pressure less than atmospheric pressure prior to receiving blood. In some cases, the device may be self-contained, and in certain instances, the device can be applied to the skin, and activated to withdraw blood from the subject. The device, or a portion thereof, may then be processed to determine the blood and/or an analyte within the blood, alone or with an external apparatus.
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