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Shielded needle assembly

  • US 5,913,846 A
  • Filed: 06/13/1996
  • Issued: 06/22/1999
  • Est. Priority Date: 06/13/1996
  • Status: Expired due to Term
First Claim
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1. A needle assembly comprising:

  • an elongate needle having a proximal end, a distal end and a passageway therethrough;

    a needle hub having a proximal end, a distal end and an outside surface, said needle hub having an axial opening therethrough to receive and hold said proximal end of said needle at said distal end of said needle hub with said distal end of said needle projecting distally axially therefrom, said proximal end of said needle hub further including means for releasably mounting said needle hub on a fluid handling device;

    a shield having a proximal open end, a distal end, a sidewall having an elongate opening from said distal end to said proximal end, said shield being operative between an open position, wherein said needle is exposed for use by passage through said elongate opening, a closed position, wherein said shield substantially obstructs access to said needle, and a latched position wherein said shield is substantially prevented from inadvertent movement to said open position;

    hinge means for retaining said shield onto said needle hub, said hinge means including a mount, said shield movable between said open position and said closed position over said needle by an off-axis pivotal movement about said hinge means, and when said shield in said closed position said shield being movable between said closed position and said latched position by an axial movement of said shield with respect to said mount;

    said hinge means further comprising two arms projecting proximally axially from said proximal end of said shield, each arm having a perpendicularly extending peg, and said mount having a pair of elongate slots sized and disposed to receive said pegs thereby forming a pivot and attaching said shield to said mount, said shield being latched and unlatched with axial movement of said shield with respect to said mount; and

    said mount further including operative latch means for releasably latching said shield when said shield is moved proximally from said closed position to said latched position.

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