STENT HAVING HELICAL ELEMENTS
First Claim
1. An expandable stent having an unexpanded state, the unexpanded stent comprising:
- a plurality of adjacent cylindrical elements circumscribing a cylindrical axis, at least two of the cylindrical elements being connected by a substantially H-shaped segment defining two generally parallel linear portions, the linear portions being angled with respect to the cylindrical axis.
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Accused Products
Abstract
An expandable stent comprised of a plurality of helical segments is disclosed. In one embodiment, the stent is generally cylindrical in shape having a cylindrical axis, and comprises a first and second set of helical segments. The helical segments in the first set are substantially parallel and have a first pitch forming a first helical angle with respect to the cylindrical axis. The helical segments in the second set are also generally parallel to each other and form a second pitch that differs from the first pitch, thereby forming a second helical angle with respect to the cylindrical axis. In an alternative embodiment, the stent comprises one set of helical segments and a plurality of circumferential elements that are joined together by the helical segments to form a plurality of cylindrical elements which are joined together to form a stent body. The stent may also have endzones.
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Citations
20 Claims
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1. An expandable stent having an unexpanded state, the unexpanded stent comprising:
a plurality of adjacent cylindrical elements circumscribing a cylindrical axis, at least two of the cylindrical elements being connected by a substantially H-shaped segment defining two generally parallel linear portions, the linear portions being angled with respect to the cylindrical axis. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. An expandable stent having an unexpanded state, the unexpanded stent comprising:
a plurality of adjacent cylindrical elements circumscribing a cylindrical axis, at least two of the cylindrical elements being connected by a substantially H-shaped segment, the H-shaped segment defining two generally parallel linear portions, wherein the linear portions are nonparallel to the cylindrical axis. - View Dependent Claims (17, 18, 19)
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20. An expandable stent having an unexpanded state, the unexpanded stent comprising:
a plurality of adjacent cylindrical elements circumscribing a cylindrical axis, a helical element connecting at least two of the cylindrical elements, the helical element having plurality of substantially S-shaped segments in an alternating pattern with a plurality of substantially H-shaped segments, each H-shaped segment defining two generally parallel linear portions being angled between 0 degrees and 90 degrees with respect to the cylindrical axis.
Specification