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Maintaining an open passagewaythrough a body lumen

  • US 20030040803A1
  • Filed: 08/23/2001
  • Published: 02/27/2003
  • Est. Priority Date: 08/23/2001
  • Status: Abandoned Application
First Claim
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1. A stent for use within a body lumen of a patient, comprising:

  • (a) a coil segment defining a lumen therethrough and including a distal portion, a middle portion, and a proximal portion, the coil segment comprising a wound element including one or more windings spaced from each other along at least a portion of the length of the coil segment and being reducible in width at least to an extent needed to pass the stent into the body lumen of the patient by winding the wound element, each of the distal and proximal portions including a diameter greater than a diameter of the middle portion when the stent is positioned and left within the body lumen of the patient; and

    (b) a flexible polymer material encapsulating at least a portion of the coil segment and disposed between the spaced windings of the wound element to form an imperforate flexible webbing between the windings that inhibits ingrowth of body tissue between the windings when the stent is placed within the body lumen of the patient while also maintaining the lumen of the coil segment open.

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