Flat wire stent
First Claim
Patent Images
1. A cylindrical stent which is designed to provide superior expansion characteristics within a corporeal lumen comprising a plurality of flat wires extending generally longitudinally along the length of the stent to form a cylindrical stent having an outer surface, each flat wire having a rectangular cross-section with flat wide sides and narrow edge sides, each flat wire comprising at least two limb elements;
- each limb element comprising two curved portion segments having opposite directions of curvature, an intermediate straight mid-portion segment connecting the two curved portion segments and a short-straight segment connected to each curved portion segment at each end of each limb element;
each short-straight segment of each limb element being joined to the adjacent short-straight segment of a limb element of an adjacent flat wire to form the cylindrical stent surface;
the flat wide sides of each flat wire being radially perpendicular to the cylindrical stent surface.
4 Assignments
0 Petitions
Accused Products
Abstract
The present invention concerns an improved stent in which the limbs have been fabricated from a medium having a cross sectional profile in which at least one segment is flat and straight, whereby the stent is provided with improved expansion characteristics.
-
Citations
13 Claims
-
1. A cylindrical stent which is designed to provide superior expansion characteristics within a corporeal lumen comprising a plurality of flat wires extending generally longitudinally along the length of the stent to form a cylindrical stent having an outer surface, each flat wire having a rectangular cross-section with flat wide sides and narrow edge sides, each flat wire comprising at least two limb elements;
- each limb element comprising two curved portion segments having opposite directions of curvature, an intermediate straight mid-portion segment connecting the two curved portion segments and a short-straight segment connected to each curved portion segment at each end of each limb element;
each short-straight segment of each limb element being joined to the adjacent short-straight segment of a limb element of an adjacent flat wire to form the cylindrical stent surface;
the flat wide sides of each flat wire being radially perpendicular to the cylindrical stent surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
- each limb element comprising two curved portion segments having opposite directions of curvature, an intermediate straight mid-portion segment connecting the two curved portion segments and a short-straight segment connected to each curved portion segment at each end of each limb element;
-
12. A cylindrical stent which is designed to provide superior expansion characteristics comprising limbs which have been fabricated from a plurality of flat wires having a flat rectangular cross-sectional profile having wide flat sides and narrow edge sides, said limbs being formed out of repeating elements, each limb being comprised of two curved portions having opposite directions of curvature, an intermediate straight mid-portion segment connecting said two curved portions and a short-straight segment at each end of the curved portions, adjacent wires being joined on their wide flat sides by having the short-straight segment of each limb element joined to the short-straight segment of a limb element of an adjacent flat wire to form said cylindrical stent having an outer surface, said stent having been provided with at least one strut in order to augment expansion wherein said strut has been effectively attached at a point of attachment between said adjacent limb elements, each limb element and each strut lying in said cylindrical, stent outer surface said wide, flat sides of each wire being radially perpendicular to said cylindrical stent outer surface.
-
13. A cylindrical stent which is designed to provide superior expansion characteristics comprising limbs which have been fabricated from a plurality of flat wires having a flat rectangular cross-sectional profile having wide, flat sides and narrow edge sides, said limbs being formed out of repeating elements, each limb being comprised of two curved portions having opposite directions of curvature, an intermediate straight mid-portion segment connecting said two curved portions and a short-straight segment at each end of said curved portions, adjacent wires being joined on their wide flat sides by having the short-straight segment of each limb element joined to the short-straight segment of a limb element of an adjacent flat wire to form said cylindrical stent having an outer surface, said stent having been provided with a multiplicity of struts to supplement each of the limb elements which have been effectively attached at both ends to a point of attachment between adjacent limb elements, each limb element and each strut lying in said cylindrical stent outer surface, said wide, flat sides of each wire being radially perpendicular to said cylindrical stent outer surface.
Specification