Single riser/single capillary blood viscometer using mass detection or column height detection
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United States of America Patent
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May 11, 2004
Grant Date -
Oct 17, 2002
app pub date -
Apr 22, 2002
filing date -
May 18, 2000
priority date (Note) -
Expired
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Abstract
An apparatus and method for determining the viscosity of the circulating blood of a living being over plural shear rates caused by a decreasing pressure differential by monitoring the changing weight of the blood, or the changing level of a column of blood over time. The apparatus and method utilize a riser, a capillary tube, a collector and a mass detector, such as a precision balance or a load cell, for monitoring the changing weight of a sample of fluid that flows through these components under the influence of the decreasing pressure differential; alternatively, the apparatus and method use a column level detector to monitor the changing level of the column of blood over time.
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