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Stent having helical elements

  • US 8,382,820 B2
  • Filed: 07/24/2008
  • Issued: 02/26/2013
  • Est. Priority Date: 06/13/1997
  • Status: Expired due to Fees
First Claim
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1. A stent comprising:

  • a plurality of contiguous filaments arranged to form;

    (i) a plurality of first helical segments, each first helical segment consisting of a plurality of substantially S-curved undulations alternating with a plurality of connection elements, each S-curved undulation defined as a contiguous filament segment extending between two consecutive connection elements, and each connection element including a substantially linear strut angled with respect to a longitudinal axis of the stent; and

    (ii) a second helical segment consisting of a plurality of undulations alternating with a plurality of the connection elements, each undulation defined as a contiguous filament segment extending between two consecutive connection elements and having a circumferential length larger than a circumferential length defined by each substantially S-curved undulation, wherein each undulation consists of five linear segments connected together by curved portions;

    the first and second helical segments having different pitches and crossing each other at the connection elements that are integral portions of the first and second helical segments.

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