Flexible expandable stent
DCFirst Claim
1. An expandable stent for supporting a vessel, wherein in the expanded and deployed state, the stent consists of:
- (a) first meander patterns having loops, the first meander patterns being longitudinally spaced from each other and having axes extending in a first direction; and
(b) second meander patterns having loops, the second meander patterns having axes extending in a second direction, different than the first direction, (c) wherein the first and second meander patterns are interconnected to form a tubular structure;
(d) wherein the first meander patterns are connected to the second meander patterns so as to leave at least one loop of each of the second meander patterns in the space between each pair of adjacent first meander patterns; and
(e) wherein the second meander patterns are connected to the first meander patterns so as to leave no more than two loops of each of the first meander patterns between each pair of adjacent second meander patterns.
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Abstract
There is disclosed a stent for implanting in the body. The stent is formed of a tube having a patterned shape which has first and second meander patterns having axes extending in first and second directions. The first meander patterns can be formed into even and odd first meander patterns. The even and odd first meander patterns are 180 out of phase with each other and the odd patterns occur between every two even patterns. The second meander patterns are intertwined with the first meander patterns. The first and second directions can be orthogonal to each other. The second meander patterns can also be formed of even and odd patterns.
199 Citations
43 Claims
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1. An expandable stent for supporting a vessel, wherein in the expanded and deployed state, the stent consists of:
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(a) first meander patterns having loops, the first meander patterns being longitudinally spaced from each other and having axes extending in a first direction; and
(b) second meander patterns having loops, the second meander patterns having axes extending in a second direction, different than the first direction, (c) wherein the first and second meander patterns are interconnected to form a tubular structure;
(d) wherein the first meander patterns are connected to the second meander patterns so as to leave at least one loop of each of the second meander patterns in the space between each pair of adjacent first meander patterns; and
(e) wherein the second meander patterns are connected to the first meander patterns so as to leave no more than two loops of each of the first meander patterns between each pair of adjacent second meander patterns. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A stent having a patterned shape comprising:
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(a) even first meander patterns having axes extending in a first direction;
(b) odd first meander patterns having axes extending in said first direction, wherein the odd first meander patterns are 180°
out of phase with the even first meander patterns, the even first meander patterns and the odd first meander patterns alternating with and spaced from each other;
(c) second meander patterns having axes extending in a second direction different from the first direction, the second meander patterns being interconnected with the even and odd first meander patterns to form a generally uniform distributed structure, (d) wherein the first and second meander patterns have loops, (e) wherein the even and odd first meander patterns are interconnected to leave a portion of the second meander patterns in the space between adjacent even and odd first meander patterns, (f) wherein the portions of the second meander patterns between adjacent even and odd first meander patterns are adapted to lengthen and to compensate for the tendency of the loops of the first meander patterns to foreshorten when the stent is expanded and (g) wherein the first and second meander patterns are interconnected to leave only two loops of each of the first meander patterns between each pair of second meander patterns. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
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32. An expandable stent, made of a unitary piece of metal, for supporting a vessel, wherein in the expanded and deployed state, the stent consists of:
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(a) first meander patterns having loops, the first meander patterns having axes extending in a circumferential direction and being longitudinally spaced from each other; and
(b) second meander patterns having loops, the second meander patterns having axes extending in a longitudinal direction, (c) wherein the first and second meander patterns are interconnected to form a tubular structure; and
(d) wherein the first meander patterns are connected to the second meander patterns so as to leave at least one loop of each of the second meander patterns in the space between each pair of adjacent first meander patterns. - View Dependent Claims (33, 34, 35, 36, 37)
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38. A stent formed of a tube having a patterned shape consisting of:
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(a) even first meander patterns having axes extending in a first direction;
(b) odd first meander patterns having axes extending in said first direction, wherein the odd first meander patterns are 180°
out of phase with the even first meander patterns, the even first meander patterns and the odd first meander patterns alternating with and spaced from each other;
(c) second meander patterns having axes extending in a second direction different from the first direction, the second meander patterns being interconnected with the even and odd first meander patterns to form a generally uniform distributed structure;
(d) wherein the first and second meander patterns have loop portions, (e) wherein the even and odd first meander patterns are interconnected to leave a portion of the second meander patterns in the space between adjacent even and odd first meander patterns, (f) wherein the portions of the second meander patterns between adjacent even and odd first meander patterns are adapted to compensate for the tendency of the loop portion of the first meander patterns to foreshorten when the stent is expanded and (g) wherein the first and second meander patterns are interconnected to leave only two loop portions of each of the first meander patterns between each pair of second meander patterns. - View Dependent Claims (39, 40, 41, 42, 43)
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Specification