Methods and apparatus for isolating platelets from blood
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United States of America Patent
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May 29, 2012
Grant Date -
Mar 17, 2011
app pub date -
Nov 22, 2010
filing date -
May 3, 2002
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A platelet collection device comprising a centrifugal spin-separator container with a cavity having a longitudinal inner surface. A float in the cavity has a base, a platelet collection surface above the base, an outer surface. The float density is below the density of erythrocytes and above the density of plasma. The platelet collection surface has a position on the float which places it below the level of platelets when the float is suspended in separated blood. During centrifugation, a layer of platelets or buffy coat collects closely adjacent the platelet collection surface. Movement of a float having a density greater than whole blood through the sedimenting erythrocytes releases entrapped platelets, increasing the platelet yield.
First Claim
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International Classification(s)
- 2010 Application Filing Year
- B04B Class
- 72 Applications Filed
- 59 Patents Issued To-Date
- 81.95 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 22 Citation Count
- B04B Class
- 85.14 % this patent is cited more than
- 13 Age
