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Safety, packaging, injection and disposal system for pre-filled pharmaceutical vials

  • US 5,067,948 A
  • Filed: 09/27/1990
  • Issued: 11/26/1991
  • Est. Priority Date: 09/27/1990
  • Status: Expired due to Fees
First Claim
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1. A vial holding syringe structure, the vial of the type having a pierceable membrane at one end, the syringe structure comprising:

  • a barrel having a bore, a sealable needle end and a plunger end;

    a plunger including a stem, having inner and outer ends, and a piston sized to sealingly engage the bore, the plunger slidably mounted within the barrel at the plunger end for reciprocal movement between a depressed position, with the inner end towards the needle end, and a retracted position, with the inner end spaced apart from the needle end, the barrel and plunger defining a variable volume region at the needle end, a partial vacuum being created in the variable volume region when the plunger moves towards the retracted position;

    the stem having an interior sized to house the vial; and

    means for transferring the contents of the vial along a path to the variable volume region when the variable volume region is at the partial vacuum, the transferring means including a one-way valve along said path to permit the contents of the vial to flow into the variable volume region but not the reverse without any manipulation by the user, the one-way valve being formed as part of the piston;

    whereby the transferred contents of the vial in the variable volume region can be injected through a hollow needle, mounted to the needle end, by the manipulation of the plunger.

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