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Anti-aerosoling drug reconstitution device

  • US 5,088,996 A
  • Filed: 05/18/1987
  • Issued: 02/18/1992
  • Est. Priority Date: 04/16/1984
  • Status: Expired due to Fees
First Claim
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1. A shield structure for preventing exposure to a solution aspirating from a chamber in a vial that has a septum which is penetrable by a cannula on a syringe which is usable to withdraw solution from a vial and deliver withdrawn solution to a patient, said cannula being attached to a barrel of a syringe to establish communication through a puncture opening in the septum made by said cannula between the inside of the vial and a fluid retaining reservoir defined by the syringe barrel, said shield structure comprising:

  • a body portion having a vial end, a syringe end, and a surface between the ends of the body portion defining an internal fluid holding chamber, said body portion having an opening in the vial end in communication with said chamber;

    means for connecting the body portion to a vial so that a vial septum sealingly closes the opening in the body portion and the surface of the body portion and septum cooperatively bound and make fluid tight the holding chamber; and

    second means at the syringe end of the body portion for removably, sealingly admitting the cannula with the attached barrel into said fluid tight internal holding chamber and for resealing the holding chamber upon the removal of the cannula from the fluid tight internal holding chamber and separation of the cannula from the body portion so that said cannula with the attached barrel can be moved relative to the body portion and vial for passage through said second means, the fluid tight internal holding chamber, the septum and into the vial, the passage of the cannula through the septum forming a puncture opening in the septum to establish communication between the barrel and vial,whereby said cannula with the attached barrel can be removably directed into the vial to reconstitute in and withdraw medicament in the vial from the vial and into the barrel;

    said syringe being separable as a unit consisting of the barrel and cannula from the vial and entire shield structure for administration of the solution to a patient in conventional manner so that any solution remaining in the vial that aspirates through the puncture opening upon the cannula withdrawing from the septum is substantially confined in the fluid tight internal holding chamber, thereby protecting the user of the syringe from exposure to the aspirating solution.

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