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Occlusion-crossing devices

  • US 9,949,754 B2
  • Filed: 10/10/2013
  • Issued: 04/24/2018
  • Est. Priority Date: 03/28/2011
  • Status: Active Grant
First Claim
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1. A catheter device for crossing occlusions, the device comprising:

  • an elongate catheter shaft;

    a rotatable tip configured to rotate relative to the elongate catheter shaft, wherein the rotatable tip includes a housing coupled with the elongate catheter shaft and cutting wedges extendable from the housing;

    a drive shaft extending within the elongate catheter shaft, coupled with the wedges, and configured to rotate the rotatable tip; and

    an OCT imaging sensor comprising an optical fiber coupled with the rotatable tip and configured to rotate therewith;

    wherein the elongate catheter shaft is configured to move axially over the drive shaft to extend and retract the wedges from the housing while maintaining a fixed position of the imaging sensor relative to the cutting wedges.

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