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Stent Graft Delivery System Including Support for Fenestration in Situ and a Mechanism for Modeling

  • US 20090264988A1
  • Filed: 04/18/2008
  • Published: 10/22/2009
  • Est. Priority Date: 04/18/2008
  • Status: Abandoned Application
First Claim
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1. A graft delivery system for delivering an endoluminal graft to a treatment site within a main vessel having a branch vessel that facilitates fenestration of the endoluminal graft in situ, the system comprising:

  • a retractable sheath component;

    an intermediate shaft slidably disposed within a lumen of the retractable sheath component;

    an inner shaft slidably disposed within a lumen of the intermediate shaft;

    an expandable fenestration support structure located in a distal portion of the system surrounding the inner shaft, wherein a proximal end of the fenestration support structure is connected to the intermediate shaft and a distal end of the fenestration support structure is connected to the inner shaft, such that the fenestration support structure expands when the distance between the proximal and distal ends thereof is reduced; and

    a self-expanding stent graft having a proximal segment, a distal segment, and an unsupported body portion of graft material extending between the proximal and distal segments, the stent graft including at least one self-expanding stent attached to one of the proximal and distal segments for anchoring the stent graft within the main vessel,wherein the self-expanding stent graft is held between the retractable sheath component and the fenestration support structure when the system is tracked to the treatment site, such that proximal retraction of the sheath component allows the self-expanding stent to deploy within the main vessel at the treatment site.

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