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HYBRID STENT WITH HELICAL CONNECTORS

  • US 20110093059A1
  • Filed: 10/20/2009
  • Published: 04/21/2011
  • Est. Priority Date: 10/20/2009
  • Status: Active Grant
First Claim
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1. A balloon expandable stent in the form of a thin-walled, lace-like, cylindrical tubular structure having a multiplicity of half-slot circumferential sets of strut members;

  • each circumferential set of strut members comprising a series of alternating straight segments and curved crowns;

    each circumferential set of strut members being connected to an adjacent circumferential set of strut members by a set of helical connectors that are connected to every other curved crown of each circumferential set of strut members, the crowns attached to a connector being connected crowns and the crowns that are not connected to a connector being unconnected crowns, each of the curved crowns having a tapered width with the strut width at the center of each crown being greater than the strut width at the ends of each crown where the crown attaches to its adjacent straight segments, each crown having a curved interior surface, the sets of helical connectors having slopes which are either positive or negative as seen in the flat layout view of the stent depending on the location of the helical connector within the stent structure and the circumferential extent for each helical connector being less than 90 degrees.

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