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Apparatus for Injecting a Pharmaceutical

  • US 20080269692A1
  • Filed: 10/10/2006
  • Published: 10/30/2008
  • Est. Priority Date: 10/11/2005
  • Status: Abandoned Application
First Claim
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1. A pharmaceutical delivery apparatus comprising:

  • a housing extending between a distal end and a proximal end;

    a syringe assembly including a needle having a proximal tip, said assembly plungeable relative to said housing from a first position, at which said needle tip is disposed within said housing, to a second position, at which said needle tip projects from said housing beyond said proximal end for insertion into an injection site;

    a needle cap including a base and a stem, said base exposed at said housing proximal end to be manually grippable for cap removal, said stem upstanding from said base and sized and configured to insert through an opening in said housing proximal end to cover said needle tip when said syringe assembly is disposed in said first position; and

    said needle cap base further including a plurality of distally projecting cams located radially outward of said stem, said cams fittable within slots in said housing proximal end when said cap is fully mounted to the apparatus, said cams and slots complementarily sized and configured whereby twisting of said fully mounted cap relative to said housing causes said cams to cammably slide along surfaces of said housing proximal end to shift said cap proximally relative to said housing.

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