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Devices and methods for crossing a chronic total occlusion

  • US 20050049574A1
  • Filed: 09/02/2003
  • Published: 03/03/2005
  • Est. Priority Date: 09/02/2003
  • Status: Active Grant
First Claim
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1. A catheter, comprising:

  • an elongate tubular member having a proximal end and a distal end; and

    a deflectable tip at the distal end of the elongate tubular member, the deflectable tip comprising a first helical coil having a first diameter and a second helical coil having a second diameter, the first diameter being larger than the second diameter, the first and second helical coils being arranged in the manner of a double helix, wherein, when viewed in cross-section, the first helical coil and the second helical coil are aligned at a first point on a circumference of each coil and misaligned at a second point on the circumference of each coil, where the second point is approximately 180 degrees from the first point.

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