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Syringe with filter, and filter therefor

  • US 6,796,965 B2
  • Filed: 02/20/2001
  • Issued: 09/28/2004
  • Est. Priority Date: 01/12/1999
  • Status: Expired due to Fees
First Claim
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1. A syringe comprising an opening, and a one-way filter which permits flow of fluid into the syringe, through the opening, unfiltered but which filters the fluid through a filter membrane when expelled from the syringe, the opening, wherein the filter membrane has a cut therethrough to form a permeable flap of the filter membrane portion and a hinge line, the permeable flap of the filter membrane portion moving to permit the fluid to enter the syringe unfiltered.

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