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Methods and apparatus for isolating platelets from blood

  • US 8,950,586 B2
  • Filed: 07/01/2013
  • Issued: 02/10/2015
  • Est. Priority Date: 05/03/2002
  • Status: Expired due to Term
First Claim
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1. A blood platelet collection device, comprising:

  • a container that partially defines a volume by a sidewall extending from a first end to a second end;

    a float moveably positioned in the volume, the float having a concave collection surface;

    a plunger positioned between the float and the first end and the plunger is substantially axially concentric with the float within the volume;

    a closure at the first end of the container;

    a first access port having a first port passage that is formed at least in part by a first sidewall extending from the closure and is formed through the closure; and

    a second access port having a second port passage that is formed at least in part by a second sidewall extending from the closure and is formed through the closure;

    wherein the first access port is configured to allow blood to be introduced into the container and wherein the second access port is configured to allow sedimented platelets to be withdrawn from the container.

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