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Methods and devices for crossing chronic total occlusions

  • US 8,632,556 B2
  • Filed: 10/21/2008
  • Issued: 01/21/2014
  • Est. Priority Date: 10/22/2007
  • Status: Active Grant
First Claim
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1. A method of treating a blood vessel with an intravascular device, the blood vessel having a vascular wall defining a vascular lumen containing an occlusion therein, the occlusion being disposed between a proximal segment of the vascular lumen and a distal segment of the vascular lumen, the method comprising:

  • inserting the intravascular device into the vascular lumen, the intravascular device including a shaft defining a longitudinal axis and a tip located at a distal end of the shaft, wherein an outer diameter of the tip is greater than a diameter of the distal end of the shaft, a proximal portion of the tip tapering towards the shaft, and wherein the intravascular device defines a device lumen;

    rotating the intravascular device about the longitudinal axis to produce relative motion at an interface between the tip and surrounding tissue;

    advancing the tip out of the proximal segment of the vascular lumen into the vascular wall;

    advancing the intravascular device within the vascular wall to establish a channel in the vascular wall extending longitudinally across the occlusion;

    advancing the tip of the intravascular device into the distal segment of the vascular lumen distal of the occlusion;

    positioning a guidewire through the device lumen and into the vascular lumen beyond the occlusion; and

    withdrawing the intravascular device over the guidewire.

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