Intravascular stent
First Claim
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1. A flexible intravascular stent for use in a body lumen, comprising:
- a plurality of body rings interconnected to form the stent defining a longitudinal axis, wherein each body ring comprises a series of peaks and valleys and each body ring has a first delivery diameter and a second expanded diameter; and
a plurality of undulating links connecting each body ring to an adjacent body ring, wherein each undulating link is substantially wholly nested within a valley of a ring and more than one peak of such ring, not connected to an undulating link, is positioned between adjacent links, and wherein links connecting successive rings are longitudinally offset relative to one another.
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Abstract
The invention is directed to an expandable stent for implantating in a body lumen, such as a coronary artery, peripheral artery, or other body lumen. The invention provides for a an intravascular stent having a plurality of cylindrical rings connected by undulating links. The stent has a high degree of flexibility in the longitudinal direction, yet has adequate vessel wall coverage and radial strength sufficient to hold open an artery or other body lumen.
118 Citations
51 Claims
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1. A flexible intravascular stent for use in a body lumen, comprising:
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a plurality of body rings interconnected to form the stent defining a longitudinal axis, wherein each body ring comprises a series of peaks and valleys and each body ring has a first delivery diameter and a second expanded diameter; and a plurality of undulating links connecting each body ring to an adjacent body ring, wherein each undulating link is substantially wholly nested within a valley of a ring and more than one peak of such ring, not connected to an undulating link, is positioned between adjacent links, and wherein links connecting successive rings are longitudinally offset relative to one another. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A flexible intravascular stent for use in a body lumen, comprising:
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a plurality of body rings interconnected to form the stent and defining a longitudinal axis, each body ring having a first delivery diameter and a second expanded diameter; the body rings having a plurality of U-shaped portions, Y-shaped portions, and W-shaped portions that are expandable; and a plurality of undulating links connecting each body ring to an adjacent body ring wherein each undulating link is substantially wholly nested within a body ring and flanked on each side by more than one U-shaped portion not connected to any undulating links, and wherein links connecting successive rings are longitudinally offset relative to one another. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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31. A flexible intravascular stent for use in a body lumen, comprising:
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a plurality of body rings interconnected to form the stent and define a longitudinal axis, each body ring having a first delivery diameter and a second expanded diameter; and means for connecting each body ring to an adjacent body ring, wherein such means are each substantially wholly nested within a body having more than one peak not connected to any means for connecting positioned on each side of such nested connecting means, and wherein such means connecting successive rings are longitudinally offset relative to one another. - View Dependent Claims (32, 33, 34, 35, 36)
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37. A flexible intravascular stent for use in a body lumen, comprising:
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a plurality of body rings interconnected to form the stent, each body ring having a first delivery diameter and a second implanted diameter; a plurality of undulating links connecting each body ring to an adjacent body ring, the undulating links being positioned circumferentially adjacent to curved bar arms of the body ring and substantially wholly nested within such body ring, and wherein links connecting successive rings are longitudinally offset relative to one another; each body ring having more than one peak positioned between and not connected to the undulating links; and each undulating link having more than four bends to provide longitudinal flexibility to the stent. - View Dependent Claims (38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51)
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Specification