Method for obtaining platelets
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United States of America Patent
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Nov 2, 1993
Issued Date -
N/A
app pub date -
Mar 5, 1992
filing date -
Sep 12, 1989
priority date (Note) -
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Abstract
A method is provided for processing donated blood, particularly a platelet-containing solution such as platelet-containing plasma, involving separating blood into a red cell containing sediment layer and a supernatant layer, and passing the supernatant layer through a filter until the filter is blocked, thereby leaving platelets to be harvested. The preferred filter comprises a porous medium having a plurality of zones of progressively increasing density.
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