STENT HAVING HELICAL ELEMENTS
First Claim
1. An expandable stent having an unexpanded state, the unexpanded stent comprising:
- a plurality of cylindrical elements having collinear cylindrical axes; and
a plurality of expandable helical segments comprising expandable circumferential segments each having a single substantially S-shaped portion and substantially H-shaped connecting segments, wherein the cylindrical elements are attached to one another by the H-shaped connecting segments.
1 Assignment
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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.
129 Citations
11 Claims
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1. An expandable stent having an unexpanded state, the unexpanded stent comprising:
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a plurality of cylindrical elements having collinear cylindrical axes; and a plurality of expandable helical segments comprising expandable circumferential segments each having a single substantially S-shaped portion and substantially H-shaped connecting segments, wherein the cylindrical elements are attached to one another by the H-shaped connecting segments. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification