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Needle protection assembly

  • US 8,939,942 B2
  • Filed: 04/14/2009
  • Issued: 01/27/2015
  • Est. Priority Date: 04/16/2008
  • Status: Active Grant
First Claim
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1. Needle protection assembly intended to protect the needle of a needle assembly, said needle protection assembly comprising at least:

  • a supporting element and a needle shield, said needle shield being axially movable with respect to said supporting element between an “

    in use”

    position in which said needle shield is intended to leave an “

    in use”

    portion of said needle uncovered, and an “

    after use”

    position distally spaced apart from said “

    in use”

    position and in which said needle shield is intended to cover said needle, said needle protection assembly further comprising;

    at least one locking element located within said needle protection assembly and not accessible to the user, said locking element being movable between at least a “

    free”

    position, in which said needle shield can be moved at least from its “

    in use”

    position to its “

    after use”

    position, and a “

    locking”

    position, in Which said locking element prevents said needle shield from moving back from its “

    after use”

    position in the proximal direction,urging means intended to displace said needle shield from its “

    in use”

    position to its “

    after use”

    position,a peg located on said supporting element or on said needle shield, and a cam located on the other of said needle shield or on said supporting element, said peg being movable within said cam so as to define said “

    in use” and



    after use”

    positions, upon increased or released distal pressure exerted by the user on said needle protection assembly, andsaid locking element being not formed by said peg and said cam, wherein said needle shield having a longitudinal axis, said locking element has a general longitudinal shape having a longitudinal axis, the longitudinal axis of said needle shield and the longitudinal axis of said locking element are merged when said needle shield is in the “

    in use”

    position, said longitudinal axis of said needle shield forms an acute angle with the longitudinal axis of said locking element when said needle shield is in its “

    after use”

    position,wherein said locking element has the global shape of a tube provided at its proximal end with an asymmetrical outer flange, andwherein a longitudinal cut is formed in a distal end of said tube and which extends proximally therefrom, a thickened portion of said outer flange being in alignment with said longitudinal cut.

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