Expandable stent forming projecting barbs and method for deploying
AssigneeAdvanced Cardiovascular Systems, Inc.
InventorsGeoffrey A. Orth, Scott C. Anderson, Peter S. Brown
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Abstract
An intraluminal stent for implanting in a body lumen in which a plurality of connecting members are deformed radially outwardly to form projecting barbs for attaching the stent to a body lumen. The stent has a first, unexpanded low profile diameter for intraluminal delivery, and a second, larger expanded diameter for implanting in a body lumen in which projecting barbs are formed and which penetrate the body lumen to assist in attaching the stent to the walls of the body lumen.
Claims27
An expandable intraluminal stent for implanting in a body lumen, comprising:
- a first stent section having at least one cylindrical element facing a first direction;
- a second stent section having at least one cylindrical element facing a second direction opposite to said first direction;
- a plurality of connecting members connecting said first section to said second section;
- and
- a weakened portion in at least some of said connecting members, said connecting members being deformable at said weakened portion to provide a plurality of projecting barbs, said weakened portion forming the apex of each of said projecting barbs.
An intraluminal stent for implanting in a body lumen, comprising:
- a first stent section and a second stent section each having at least one expandable cylindrical element which are interconnected so as to be aligned on a common longitudinal axis;
- a plurality of connected members connecting said first stent section to said second stent section;
- and
- a notch in at least some of said connecting members providing a weakened area so that said connecting members having a notch can be deformed outwardly to form a plurality of projecting barbs for penetrating the body lumen, said weakened portion forming the apex of each of said projecting barbs.
A method for implanting an intraluminal stent in a body lumen where said stent has a plurality of cylindrical elements which are expandable in a radial direction and which are interconnected so as to be aligned on a common longitudinal axis, and said stent having a plurality of connecting members for interconnecting said cylindrical elements, where at least some of said connecting members have a notch so that as said cylindrical elements are radially expanded said connecting members having a notch buckle outwardly to form a plurality of projecting barbs, the method comprising:
- providing a delivery cather having an expansion member at its distal end;
- mounting said intraluminal stent on said expansion member of said catheter;
- delivering said stent on said expansion member of said catheter percutaneously through the patient's vasculature to a specific location;
- expanding said expansion member and thereby expanding said stent outwardly into contact with the body lumen;
- forming a plurality of projecting barbs by deforming the connecting members having a notch so that they buckle outwardly such that each notch forms the apex of said projecting barbs, said projecting barbs penetrating the body lumen;
- and
- contracting said expansion member and withdrawing said catheter and said expansion member from the patient leaving said stent implanted in the body lumen.
An expandable intraluminal stent for implanting in a body lumen, comprising:
- a first stent section having at least one cylindrical element facing a first direction;
- a second stent section having at least one cylindrical element facing a second direction opposite to said first direction;
- a plurality of connecting members connecting said first section to said second section, and
- a weakened portion in at least some of said connecting members, said connecting members being deformable at said weakened portion to provide a plurality of projecting barbs, wherein the overall length of the stent in its unexpanded and expanded configuration is substantially the same.
Dependencies are inferred from the claim text.