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Sheath capture device for stent graft delivery system and method for operating same

  • US 9,877,857 B2
  • Filed: 03/31/2015
  • Issued: 01/30/2018
  • Est. Priority Date: 09/03/2003
  • Status: Active Grant
First Claim
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1. A delivery system for delivering and deploying stent grafts having a proximal stent, comprising:

  • a hollow first lumen having a first distal end;

    a stent capture device including a distal apex head and a proximal apex body, the distal apex head defining a distal surface and a proximal surface, and the distal apex head and the proximal apex body defining a first cavity for capturing a stent between the proximal surface of the distal apex head and the proximal apex body, the distal apex head being fixedly connected to said first distal end of the hollow first lumen;

    a hollow outer catheter having a catheter distal end and a catheter inner diameter;

    a hollow second lumen having a second distal end and being slidably disposed about said first lumen and slidably disposed in said hollow outer catheter;

    a hollow stent graft sheath having a sheath proximal end connected to said second distal end of said hollow second lumen and disposed about said first hollow lumen, said sheath having a sheath distal end and a sheath inner diameter greater than said catheter inner diameter and being relatively flexible compared to the hollow outer catheter; and

    a distal nose cone having a cone proximal end connected to at least one of said distal apex head and said first distal end of the hollow first lumen, said nose cone and said distal surface of the distal apex head defining a second cavity to selectively capture said sheath distal end therebetween, whereby the sheath can be removed from said second cavity defined by said distal nose cone and said distal surface of said distal apex head, while the stent remains within the first cavity defined between the distal apex head and the proximal apex body, and wherein said sheath distal end is releaseably secured within said second cavity.

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