Delivery and deployment systems for bifurcated stent grafts
AssigneeW. L. Gore & Associates, Inc.
InventorsMatthew S. Beard, Martin J. Sector
Life of this patent
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Abstract
A system for endoluminal delivery of a medical device, wherein the medical device includes a bifurcated stent graft having a trunk, a first leg and a second leg shorter than the first leg. The system includes a sheath having a tubular wall having a cylindrical inner surface defining a lumen for receiving the stent graft therein to constrain the stent graft toward a delivery configuration suitable for endoluminal delivery, and a generally cylindrical core member extending through the lumen. The core member has a first annular surface for engaging an end of the first leg. The core has a second annular surface for engaging an end of the second leg while at least the end of the second leg remains constrained by the sheath.
Claims21
An endoluminal delivery system comprising:
- a bifurcated stent graft having a trunk, a first leg and a second leg shorter than the first leg;
- a sheath having a tubular wall having an inner surface defining a lumen for receiving the stent graft therein to constrain the stent graft toward a delivery configuration suitable for endoluminal delivery;
- and
- a core member having a first surface and a second annular surface, the core member extending into a lumen of the first leg such that the first surface abuts an end of the first leg, the second surface is-positioned within the lumen of the first leg such that the first leg is disposed between the second surface and the second leg, and a terminal end of the second leg is generally aligned in an axial direction with and abuts the second annular surface, where the second surface is obstructing the end of the second leg while the end of the second leg remains constrained by the sheath.
A medical device delivery system, said system comprising:
- a bifurcated stent graft having a proximal end and a distal end opposite the proximal end, the stent graft having a trunk extending between the proximal end and a bifurcation, the stent graft having first and second legs extending distally from the bifurcation, the first leg having an end defining the distal end of the stent graft, the second leg having an end terminating at a location between the bifurcation and the distal end of the stent graft;
- a sheath disposed about the stent graft for constraining the stent graft toward a delivery configuration suitable for endoluminal delivery;
- and
- a core member having a first surface for engaging the distal end of the stent graft, the core member having a second annular surface and extending into a lumen of the first leg, the second surface positioned within the lumen of the first leg such that the first leg is disposed between the second surface and the second leg, where a terminal end of the second leg is generally aligned in an axial direction with and abuts the second annular surface, and wherein the second annular surface is adapted to engage the end of the second leg during displacement of the sheath relative to the core member.
An endoluminal delivery system comprising:
- a bifurcated stent graft having a trunk, a first leg and a second leg shorter than the first leg;
- a sheath having a tubular wall having an inner surface defining a lumen for receiving the stent graft therein to constrain the stent graft toward a delivery configuration suitable for endoluminal delivery;
- and
- a core member extending into a lumen of the first leg, the core member having a first annular surface and a second annular surface, the second annular surface being adapted to obstruct axial displacement of the bifurcated stent graft by obstructing an end of the second leg while the second annular surface is positioned within the lumen of the first leg such that the first leg is disposed between the second annular surface and the second leg, and a terminal end of the second leg is generally aligned in an axial direction with and abuts the second annular surface, while the first annular surface abuts an end of the first leg.
Dependencies are inferred from the claim text.