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Transfer set for vials and medical containers

  • US 6,571,837 B2
  • Filed: 01/23/2001
  • Issued: 06/03/2003
  • Est. Priority Date: 04/20/1998
  • Status: Expired due to Fees
First Claim
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1. A transfer set assembly for transferring fluids between a first container having a sealed open end and a second container under sterile conditions, said transfer set assembly comprising:

  • a collar, a needle cannula holder, a needle cannula and a closure;

    said collar having a proximate tubular end portion adapted to be received over said sealed open end of said first container for securement thereto, an intermediate portion having an axial opening therethrough and a distal tubular portion;

    said needle cannula holder having a proximate end portion telescopically received in said distal tubular portion of said collar and a tubular distal end portion and said tubular distal end portion having a spiral camming surface;

    said needle cannula supported in said holder having a free proximate end portion projecting axially beyond said proximate end portion of said holder;

    said closure having a tubular body portion surrounding said needle cannula holder and said distal tubular portion of said collar, a closed distal end portion and an inner tubular portion generally coaxially aligned with said tubular body portion having a spiral camming surface adjacent a free end of said inner tubular portion and engaging said spiral camming surface of said holder; and

    whereby, rotation of said closure relative to said holder drives said needle cannula and holder assembly axially to pierce said sealed open end of said first container.

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