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Coupling device for medical injection system

  • US 5,846,233 A
  • Filed: 01/09/1997
  • Issued: 12/08/1998
  • Est. Priority Date: 01/09/1995
  • Status: Expired due to Term
First Claim
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1. A coupling device for coupling a nozzle to a fluid container comprising a tubular member having a first and second end and a wall therebetween, said wall including a passageway therethrough with the first end being configured and dimensioned to cooperatively engage with a fluid container;

  • a second end being configured and dimensioned to cooperatively engage with a nozzle of an injection device having an orifice such that the nozzle orifice generally aligns with the wall passageway for fluid communication therebetween; and

    a flexible membrane positioned between the wall and the second end of the tubular member, said membrane including a generally centrally disposed zero diameter aperture to facilitate fluid communication between the nozzle orifice and the wall passageway, wherein the membrane forms a liquid-tight seal between the nozzle orifice and the wall passageway when the nozzle is positioned against the membrane so that fluid can flow only through the aperture, and further wherein the aperture resists fluid flow therethrough when the nozzle is not positioned against the membrane.

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