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Venous stent

  • US 5,851,232 A
  • Filed: 03/15/1997
  • Issued: 12/22/1998
  • Est. Priority Date: 03/15/1997
  • Status: Expired due to Fees
First Claim
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1. A stent assembly for placement in a body lumen including an inner wall, said stent assembly comprising:

  • a) a cylindrical shell including an outer wall; and

    b) a plurality of circular coils embedded within said shell, said assembly being changeable from a first unexpanded state for placement of said stent assembly within the body lumen to a second expanded state in which said outer wall of said cylindrical shell contacts the inner wall of the body lumen and said plurality of coils are each expanded to be substantially C-shaped in form for holding the body lumen open, wherein each of said plurality of coils are formed from cut rings, the cut in each of said plurality of coils forming first and second ends, said first and second ends being separated to form a gap therebetween, said plurality of gaps being staggered to cover a 360 degree rotation about said cylindrical shell when said stent assembly is in said second expanded state.

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