Alternating circumferential bridge stent design and methods for use thereof
First Claim
1. A stent comprising:
- a first section and a second section, the second section aligned with the first section along a longitudinal axis of the stent, each section including;
a plurality of expandable modules, each expandable module including a plurality of strut elements that join together at a plurality of apices in a zig-zag shape,wherein a length of each strut element in the first section is 5-50% lower than a length of each strut element in the second section andwherein a width of each strut element in the first section is 5-50% higher than a width of each strut element in the second section; and
a plurality of bridging modules, each bridging module including bridging elements that extend circumferentially and connect each apex of a first expandable module with each apex of a second immediately adjacent expandable module of the plurality of expandable modules,wherein a length of each bridging element in the first section is 5-50% shorter than a length of each bridging element in the second section,wherein a width of each bridging element in the first section is 5-50% higher than a width of each bridging element in the second section,wherein the plurality of bridging modules are arranged to alternate along the longitudinal axis between clockwise bridging modules and counterclockwise bridging modules, the clockwise bridging modules including bridging elements that extend at a clockwise angle with respect to the longitudinal axis, and the counterclockwise bridging modules including bridging elements that extend at a counterclockwise angle with respect to the longitudinal axis;
wherein the stent is configured to be placed in a vein such that the first section is in a first region of the vein and the second section is in a second region of the vein, the first region subjected to a greater physiologic compression than the second region; and
wherein the first section is approximately 1.1 to 3 times more radially stiff than the second section such that the first section is configured to withstand the greater physiologic compression of the first region.
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Accused Products
Abstract
A stent includes a first section and a second section. The second section is aligned with the first section along a longitudinal axis of the stent. Each section includes a plurality of expandable modules and a plurality of bridging modules. Each expandable module includes a plurality of strut elements that join together at a plurality of apices. Each bridging module includes bridging elements that connect an apex of a first module with an apex of a second module. The plurality of expandable modules or the plurality of bridging modules in the first section are more radially stiff than the plurality of expandable modules or the plurality of bridging modules in the second section such that at least a portion of the first section is configured to be placed in a region of a vein subjected to physiologic compression.
740 Citations
41 Claims
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1. A stent comprising:
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a first section and a second section, the second section aligned with the first section along a longitudinal axis of the stent, each section including; a plurality of expandable modules, each expandable module including a plurality of strut elements that join together at a plurality of apices in a zig-zag shape, wherein a length of each strut element in the first section is 5-50% lower than a length of each strut element in the second section and wherein a width of each strut element in the first section is 5-50% higher than a width of each strut element in the second section; and a plurality of bridging modules, each bridging module including bridging elements that extend circumferentially and connect each apex of a first expandable module with each apex of a second immediately adjacent expandable module of the plurality of expandable modules, wherein a length of each bridging element in the first section is 5-50% shorter than a length of each bridging element in the second section, wherein a width of each bridging element in the first section is 5-50% higher than a width of each bridging element in the second section, wherein the plurality of bridging modules are arranged to alternate along the longitudinal axis between clockwise bridging modules and counterclockwise bridging modules, the clockwise bridging modules including bridging elements that extend at a clockwise angle with respect to the longitudinal axis, and the counterclockwise bridging modules including bridging elements that extend at a counterclockwise angle with respect to the longitudinal axis; wherein the stent is configured to be placed in a vein such that the first section is in a first region of the vein and the second section is in a second region of the vein, the first region subjected to a greater physiologic compression than the second region; and wherein the first section is approximately 1.1 to 3 times more radially stiff than the second section such that the first section is configured to withstand the greater physiologic compression of the first region. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. A stent comprising:
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a first section and a second section, the second section aligned with the first section along a longitudinal axis of the stent, each section including; a plurality of expandable modules, each expandable module including a plurality of strut elements that join together at a plurality of apices in a zig-zag shape, wherein a length of each strut element in the first section is 5-50% higher than a length of each strut element in the second section, wherein a width of each strut element in the first section is 5-50% lower than a width of each strut element in the second section; and a plurality of bridging modules, each bridging module including bridging elements that extend circumferentially and connect each apex of a first expandable module with each apex of a second immediately adjacent expandable module of the plurality of expandable modules; wherein a length of each bridging element in the first section is 5-50% higher than a length of each bridging element in the second section, wherein a width of each bridging element in the first section is 5-50% lower than a width of each bridging element in the second section, wherein the plurality of bridging modules are arranged to alternate along the longitudinal axis between clockwise bridging modules and counterclockwise bridging modules, the clockwise bridging modules including bridging elements that extend at a clockwise angle with respect to the longitudinal axis, and the counterclockwise bridging modules including bridging elements that extend at a counterclockwise angle with respect to the longitudinal axis; wherein the stent is configured to be placed in a vein such that the first section is in a first region of the vein and a second section is in a second region of the vein, the first region having a higher curvature than the second region; and wherein the first section is approximately 1.1 to 3 times more flexible than the second section such that the first section is configured to withstand the higher curvature of the first region. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41)
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Specification