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Alternating circumferential bridge stent design and methods for use thereof

  • US 9,649,211 B2
  • Filed: 05/03/2011
  • Issued: 05/16/2017
  • Est. Priority Date: 11/04/2009
  • Status: Active Grant
First Claim
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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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