Shape memory polymeric stent
First Claim
Patent Images
1. An implantable, radially distensible stent comprising:
- a plurality of helically wound elongate members, each member comprising an overlapping portion having a longitudinal extent, opposed and convexly rounded sides defining a width and opposed luminal and exterior surfaces;
each member comprising shape memory polymer;
wherein one of the opposed sides of one elongate member slidingly overlaps one of the opposed sides of an adjacent elongate member to define the overlapping portion and to form a substantially fluid-tight and self-supporting wall structure of the stent.
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Abstract
An implantable, radially distensible stent includes a plurality of helically wound elongate members. The members include an overlapping portion having a longitudinal extent, opposed and convexly rounded sides defining a width of the members and opposed luminal and exterior surfaces. The members include shape memory polymer. The side of one elongate member slidingly overlaps the side of an adjacent elongate member to form a self-supporting wall structure of a stent. The stent wall is self-supporting without other support structure incorporated into or abutting the elongate members. Further, the shape memory polymer may include a biodegradable or bioabsorbable elements.
29 Citations
43 Claims
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1. An implantable, radially distensible stent comprising:
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a plurality of helically wound elongate members, each member comprising an overlapping portion having a longitudinal extent, opposed and convexly rounded sides defining a width and opposed luminal and exterior surfaces;
each member comprising shape memory polymer;wherein one of the opposed sides of one elongate member slidingly overlaps one of the opposed sides of an adjacent elongate member to define the overlapping portion and to form a substantially fluid-tight and self-supporting wall structure of the stent. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. An implantable stent consisting essentially of:
a plurality of helically wound, elongate members made of shape memory polymer; wherein each member comprises an overlapping portion having a longitudinal extent, opposed and convexly rounded sides defining a width and opposed luminal and exterior surfaces; and wherein one of the opposed sides of one elongate member slidingly overlaps one of the opposed sides of an adjacent elongate member to define the overlapping portion and to form a substantially fluid-tight and self-supporting wall structure of the stent. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
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37. An implantable, radially distensible stent comprising:
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a helically wound elongate T-shaped member having a first upper traverse extent and a second perpendicularly projecting extent; wherein the first extent comprises opposed and convexly rounded sides defining a width of the first extent and opposed luminal and exterior surfaces; wherein the second extent comprises a convexly arched, lobately shaped protuberance; wherein the side of a portion of the first extent of the elongate member slidingly overlaps a portion of the luminal or exterior surface an adjacently juxtaposed portion of the elongate member to form a self-supporting wall structure of the stent wherein the self-supporting wall structure does not have an open lattice wall structure. - View Dependent Claims (38, 39, 40, 41, 42, 43)
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Specification