Blood component separator disk

  • US 7,077,273 B2
  • Filed: 04/27/2001
  • Issued: 07/18/2006
  • Est. Priority Date: 04/28/2000
  • Status: Expired due to Term
First Claim
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1. In combination, a tube comprising an inner wall forming a cavity adapted to contain a fluid to be subjected to centrifugation and a separator disk in said tube adapted to float freely in said fluid and separate components of said fluid having different specific gravities, said disk being made of a material having a specific gravity near the specific gravity of red blood cells and comprising a peripheral portion adjacent said inner wall of said tube and a central portion extending across at least a portion of said cavity, said central portion having an upper surface forming a closed recess configured such that after centrifugation of blood said closed recess lies just below an interface with separated red blood cells and accumulates a small layer of red blood cells.

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