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Apparatus for peripheral vascular access

  • US 9,775,973 B2
  • Filed: 10/24/2013
  • Issued: 10/03/2017
  • Est. Priority Date: 01/14/2008
  • Status: Active Grant
First Claim
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1. A method of confirming placement of a catheter within a vessel, the method comprises:

  • providing a needle slidably mounted within a dilator, where the dilator is slidably mounted through the catheter and extends from a distal end of the catheter, where the needle is spring biased in a proximal direction against a retaining material to allow a piercing end of the needle to extend out of a distal end of the dilator;

    advancing the piercing end of the needle through a wall of a vessel into a lumen of the vessel such that a fluid within the vessel travels through the needle to contact the retaining material causing weakening of the retaining material allowing proximal movement of the needle within the dilator such that the piercing end of the needle retracts into the dilator; and

    advancing the catheter over the dilator into the vessel lumen.

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