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Multiple cartridge syringe

  • US 5,147,323 A
  • Filed: 03/08/1991
  • Issued: 09/15/1992
  • Est. Priority Date: 03/08/1991
  • Status: Expired due to Fees
First Claim
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1. A syringe, for use with liquid-filled pharmaceutical cartridges of the type having a barrel, the barrel having an open end and an accessible end, a piston within the interior of the barrel and a liquid within the barrel between the piston and the accessible end, comprising:

  • a body configured to house first and second of the cartridges therein;

    an elongate accumulator chamber;

    a movable accumulator piston housed within the accumulator chamber;

    first means, engageable with the accessible ends of the first and second cartridges, for fluidly coupling the interiors of the barrels of the first and second cartridges to the accumulator chamber;

    means for preventing fluid flow into the interiors of the barrels of the first and second cartridges;

    a hollow needle;

    means for selectively fluidly coupling the hollow needle with the accumulator chamber; and

    a stem engageable with the cartridge pistons and the accumulator piston by which selected amounts of liquid from the first and second cartridges are forcible by the stem into the accumulator chamber to mix within the accumulator chamber, the mixed liquid in the accumulator chamber being forcible by the stem through the selectively fluidly coupling means and through the hollow needle.

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