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Catheter and introducer needle assembly with needle shield

  • US 20040204681A1
  • Filed: 01/13/2004
  • Published: 10/14/2004
  • Est. Priority Date: 04/09/1998
  • Status: Active Grant
First Claim
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1. A catheter and introducer needle assembly, comprising:

  • a catheter having a proximal end and a distal end;

    a catheter hub in fluid communication with the catheter and having a proximal end and a distal end connected to the proximal end of the catheter, wherein the catheter hub includes a side port;

    an extension tube attached to the catheter hub at the side port and in fluid communication with the catheter hub;

    an introducer needle removably disposed in the catheter and having a proximal end and a distal end, the introducer needle including a main portion having a substantially constant outer diameter;

    a needle shield selectively engaged to the catheter hub proximal, at least in part, to the side port and slidingly mounted to the introducer needle for movement from a first position to a second position at the distal end of the introducer needle, the needle shield including;

    a clip adapted to flex between a biased position and an unbiased position in a plane substantially perpendicular to the axis on the introducer needle; and

    a tether connected to the needle hub and the preventing unwanted distal movement of the needle shield off the distal end of the introducer needle;

    wherein, in the biased position, the clip engages the-catheter hub and, in the unbiased condition, the clip disengages the catheter hub; and

    wherein, when the distal end of the introducer needle extends from the distal portion of the needle shield, the clip is held to one side of the introducer needle so it is flexed into the biased position and, when the sharp distal end of the introducer needle is withdrawn into the needle shield, the introducer needle flexes to the unbiased position out of engagement with the catheter hub.

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