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Multi-anchor stent

  • US 5,800,526 A
  • Filed: 07/24/1997
  • Issued: 09/01/1998
  • Est. Priority Date: 03/17/1995
  • Status: Expired due to Term
First Claim
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1. An intravascular multi-anchor stent for implanting in a body lumen, comprising:

  • a first cylindrical element which is substantially independently expandable in the radial direction, the first cylindrical element having a W-shaped portion interposed between two U-shaped portions, the W-shaped portion connected to the U-shaped portions by bulbous arched portions;

    a pair of second cylindrical elements which are substantially independently expandable in the radial direction, each one of the pair of second cylindrical elements having a U-shaped portion interposed between two W-shaped portions, the U-shaped portion connected to the W-shaped portions by bulbous arched portions, the first cylindrical element interposed between the pair of second cylindrical elements so as to be generally aligned on a common longitudinal axis;

    a barb disposed on at least some of the bulbous arched portions of the first and second cylindrical elements, the barb facing partially radially outwardly when the multi-anchor stent is in an expanded configuration to attach the stent to the body lumen;

    a first interconnecting element interconnecting the W-shaped portions of the first cylindrical element to the U-shaped portions of a first one of the pair of the second cylindrical element; and

    a pair of second interconnecting elements interconnecting the two W-shaped portions of a second one of pair of second cylindrical elements to the U-shaped portions of the first cylindrical element.

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