Esophageal stent

  • US 5,876,448 A
  • Filed: 03/13/1996
  • Issued: 03/02/1999
  • Est. Priority Date: 05/08/1992
  • Status: Expired due to Term
First Claim
Patent Images

1. A device for fixation in a body lumen, including:

  • a tubular stent of open weave construction having an axial length and a predetermined normal configuration and being radially compressible to a reduced-radius configuration to facilitate an axial insertion of the stent into a body lumen for delivery to a treatment site within the body lumen; and

    a continuous elastomeric film formed axially along the stent and having an axial length, said continuous film circumscribing the stent over substantially the entirety of said axial length to define a barrier region of the stent to substantially prevent growth of tissue through the stent along the barrier region, said axial length of said film being at least about one-third the axial length of the stent; and

    wherein a portion of the open weave construction of the stent is substantially free of the continuous film to provide a fixation region of the stent for positively fixing the stent within the body lumen at the treatment site, by radial expansion of the stent into a surface engagement with a tissue wall segment defining the body lumen.

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