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Recanalization apparatus and devices for use therein and method

  • US 5,935,108 A
  • Filed: 11/14/1997
  • Issued: 08/10/1999
  • Est. Priority Date: 11/14/1997
  • Status: Expired due to Term
First Claim
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1. A recanalization apparatus for use in crossing a stenosis forming a total occlusion in a lumen in a vessel formed by a vessel wall, the stenosis having a fibrous cap, comprising a guiding sheath comprised of a flexible elongate tubular member having proximal and distal extremities and having a lumen extending from the proximal extremity to the distal extremity, hemostasis valve means mounted on the proximal extremity of the flexible elongate tubular member, a needle cannula slidably mounted in the lumen of the guiding sheath, said needle cannula having proximal and distal extremities and having a lumen extending from the proximal extremity to the distal extremity and a sharpened tip mounted on the distal extremity, said needle cannula having a length so that its proximal extremity extends beyond the proximal extremity of the guiding sheath when the sharpened tip is deployed beyond the distal extremity of the guiding sheath.

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