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Vascular prothesis having interdigitating edges and methods of use

  • US 7,901,448 B2
  • Filed: 09/30/2005
  • Issued: 03/08/2011
  • Est. Priority Date: 12/24/2002
  • Status: Expired due to Fees
First Claim
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1. A vascular prosthesis for implantation in a body vessel, the vascular prosthesis comprising:

  • a helical section configured to transition between a contracted, wound-down delivery configuration and an unconstrained, unwound deployed configuration, the helical section comprising at least one unconnected turn extending substantially more than 360°

    along a helical path when in the deployed configuration, each said turn having a distal edge and a proximal edge;

    the helical section comprising a flat ribbon of material having a multiplicity of openings formed therethrough, at least some of the multiplicity of openings define ellipsoidal openings;

    the distal and proximal edges each defining a series of generally convex crests and generally concave troughs configured so that in the deployed configuration a series of adjacent crests along the distal edge interdigitates with a series of adjacent troughs along an adjacent proximal edge;

    said series of adjacent interdigitating crests along said distal edge extending at least half way into said series of adjacent troughs along said proximal edge; and

    said series of adjacent interdigitating crests and troughs extending along at least half of the helical section;

    whereby the interdigitating crests and troughs improve the coverage and support of the body vessel.

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