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Piston for a needleless valve system

  • US 8,801,678 B2
  • Filed: 01/20/2012
  • Issued: 08/12/2014
  • Est. Priority Date: 01/20/2012
  • Status: Active Grant
First Claim
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1. A piston for a needleless valve system, the piston comprising:

  • a continuous top surface without a slit therethrough;

    an opening disposed proximate to and separated from the top surface, the opening having an open position and a closed position; and

    a spacer disposed in the opening,wherein the top surface is non-planar when the opening is in the open position.

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