Vascular prothesis having interdigitating edges and methods of use
First Claim
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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Accused Products
Abstract
The present invention is directed to an implantable vascular prosthesis configured for use in a wide range of applications, such as treating aneurysms, maintaining patency in a vessel, and providing controlled delivery of therapeutic agents to a vessel wall. The prosthesis comprises a helical body having a plurality of turns, wherein the proximal and distal edges of the turns of the prosthesis has a pattern that interdigitates when the prosthesis assumes the deployed configuration. The prosthesis optionally may comprise a radially expanding distal portion coupled to the helical body for facilitating placement of the prosthesis within a body vessel.
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Citations
9 Claims
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1. A vascular prosthesis for implantation in a body vessel, the vascular prosthesis comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification