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Expandable stents

  • US 5,514,154 A
  • Filed: 07/28/1994
  • Issued: 05/07/1996
  • Est. Priority Date: 10/28/1991
  • Status: Expired due to Term
First Claim
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1. A longitudinally flexible stent for implanting in a body lumen, comprising:

  • a plurality of cylindrical elements which are independently expandable in the radial direction and which are interconnected so as to be generally aligned on a common longitudinal axis;

    a plurality of connecting elements for interconnecting said cylindrical elements, said connecting elements configured to interconnect only said cylindrical elements that are adjacent to each other; and

    an outer wall surface on said cylindrical elements, said outer wall surface being smooth prior to expansion of said stent and forming a plurality of outwardly projecting edges which form as said stent is expanded radially outwardly from a first diameter to a second, enlarged diameter.

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