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Expandable medical device with S-shaped bridging elements

  • US 7,896,912 B2
  • Filed: 04/13/2004
  • Issued: 03/01/2011
  • Est. Priority Date: 03/30/1998
  • Status: Expired due to Fees
First Claim
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1. A cylindrical expandable stent comprising:

  • a plurality of cylindrical tubes each formed of a plurality of connected adjacent struts, the plurality of cylindrical tubes expandable from a first diameter to a second diameter;

    wherein when in the second diameter, at least some of the adjacent struts form a substantially V-shape with respect to each other, said V-shape having a midline parallel to the longitudinal axis of the stent, said adjacent struts interconnected at alternating ends to define an apex for each V-shape;

    a plurality of “

    S”

    -shaped bridging elements connected between the adjacent cylindrical tubes, one end of each said “

    S”

    -shaped element having a pair of ends forming an end of said “

    S”

    -shape, said “

    S”

    -shaped element connected to one V-shape on a first cylindrical tube and the second end of said “

    S”

    -shaped element connected to an opposing V-shape on a second cylindrical tube, wherein each of the bridging elements are connected to a cylindrical tube entirely above a midline of each of the V-shapes on one cylindrical tube and entirely below the midline of each of the V-shapes on an adjacent cylindrical tube; and

    wherein each of the bridging elements crosses a midline of a V-shape three times.

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