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Coil bioabsorbable stents

  • US 9,636,241 B2
  • Filed: 08/16/2012
  • Issued: 05/02/2017
  • Est. Priority Date: 03/30/2012
  • Status: Active Grant
First Claim
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1. An expandable stent comprising:

  • a single filament shaped into a primary coil having a plurality of primary coil segments that each include a plurality of elements, the stent having a first diameter when the stent is in a furled configuration;

    a plurality of longitudinal support fibers coupled to the filament, wherein at least one longitudinal support fiber is disposed along an outer aspect of the stent and is parallel to a major axis of the stent and extends along the entire length of the stent;

    wherein at least one of the elements is expandable beyond others of the elements and arranged such that upon expansion of the elements the stent assumes an unfurled configuration having two distinct diameters at two distinct primary coil segments, and wherein the first diameter is smaller than the two distinct diameters; and

    wherein at least another one of the longitudinal support fibers is discontinuous at a location between the two distinct primary coil segments to allow formation of a localized zone of increased radius or curvature along a longitudinal axis of the stent.

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