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Self-expanding stent and stent delivery system for treatment of vascular stenosis

  • US 20050049668A1
  • Filed: 08/29/2003
  • Published: 03/03/2005
  • Est. Priority Date: 08/29/2003
  • Status: Abandoned Application
First Claim
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1. A self-expanding stent and stent delivery system comprising:

  • a balloon catheter comprised of an elongated catheter having a delivery lumen and an inflation lumen, said elongated catheter having a distal section and an inflatable balloon mounted on the distal section of said elongated catheter and communicating with the inflation lumen;

    an elongated core member slidably disposed within the delivery lumen of said elongated catheter, said elongated core member including a proximal cylindrical member disposed about said elongated core member, and a distal cylindrical member disposed about said elongated core member and positioned distally of said proximal cylindrical member and being spaced apart from said proximal cylindrical member to define a gap having a predetermined length; and

    , a self-expanding stent comprised of a small diameter skeletal tubular member having a thin wall, said wall of said skeletal tubular member including a plurality of cells which are formed by a plurality of interconnected strut members, and a cylindrical anchor member placed on one of said plurality of strut members, said cylindrical anchor member having a length less than the length of the gap between the proximal cylindrical member and the distal cylindrical member, and said self-expanding stent being mounted on one of said cylindrical members such that said cylindrical anchor member is interlocked within said gap and between said proximal cylindrical member and said distal cylindrical member to thereby retain said stent on said elongated core member.

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