Aorta and branch vessel stent grafts and method

• US 9,095,461 B2
• Filed: 11/08/2004
• Issued: 08/04/2015
• Est. Priority Date: 11/08/2003
• Status: Active Grant

• Current Assignee: Cook Medical Technologies, LLC (Cook Group Incorporated)
• Original Assignee: Cook Medical Technologies, LLC (Cook Group Incorporated)
• Inventors: Schaeffer, Darin G.
• Primary Examiner(s): Matthews, Howie
• Application Number:
  US10/984,040
• Publication Number:
  US 20050171598A1
• Time in Patent Office: 3,921 Days
• Field of Search: 623/1.31, 623/1.35, 623/1.37, 623/1.16, 623/1.11, 623/1.13
• US Class Current: 1/1
• CPC Class Codes: A61B 2017/1107 for blood vessels
• CPC Class Codes: A61B 2017/1139 Side-to-side connections, e.g. shunt or X-connections
• CPC Class Codes: A61F 2/064 with special features to facilitate anastomotic coupling anastomosis of natural blood vessels A61B17/11
• CPC Class Codes: A61F 2/07 Stent-grafts
• CPC Class Codes: A61F 2/856 Single tubular stent with a side portal passage
• CPC Class Codes: A61F 2/88 the wire-like elements formed as helical or spiral coils forming a net-like or mesh-like structure A61F2/90
• CPC Class Codes: A61F 2/89 the wire-like elements comprising two or more adjacent rings flexibly connected by separate members
• CPC Class Codes: A61F 2/91 made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes
• CPC Class Codes: A61F 2/915 with bands having a meander structure, adjacent bands being connected to each other
• CPC Class Codes: A61F 2/954 for placing stents or stent-grafts in a bifurcation
• CPC Class Codes: A61F 2/958 Inflatable balloons for placing stents or stent-grafts
• CPC Class Codes: A61F 2002/065 Y-shaped blood vessels
• CPC Class Codes: A61F 2002/067 modular
• CPC Class Codes: A61F 2002/075 the stent being loosely attached to the graft material, e.g. by stitching
• CPC Class Codes: A61F 2002/821 Ostial stents
• CPC Class Codes: A61F 2002/8483 Barbs
• CPC Class Codes: A61F 2002/8486 provided on at least one of the ends
• CPC Class Codes: A61F 2002/91508 the meander having a difference in amplitude along the band
• CPC Class Codes: A61F 2002/91525 within the whole structure different bands showing different meander characteristics, e.g. frequency or amplitude
• CPC Class Codes: A61F 2002/91533 characterised by the phase between adjacent bands
• CPC Class Codes: A61F 2002/91558 : connected peak to peak
• CPC Class Codes: A61F 2002/91566 : connected trough to trough
• CPC Class Codes: A61F 2002/9511 : the retaining means being filaments or wires
• CPC Class Codes: A61F 2210/0076 : multilayered, e.g. laminated structures
• CPC Class Codes: A61F 2220/0016 : with sharp anchoring protrusions, e.g. barbs, pins, spikes
• CPC Class Codes: A61F 2220/005 : using adhesives
• CPC Class Codes: A61F 2220/0075 : sutured, ligatured or stitched, retained or tied with a rope, string, thread, wire or cable
• CPC Class Codes: A61F 2220/0083 : using hook and loop-type fasteners
• CPC Class Codes: A61F 2230/005 : Rosette-shaped, e.g. star-shaped
• CPC Class Codes: A61F 2230/0054 : V-shaped
• CPC Class Codes: A61F 2230/0067 : conical
• CPC Class Codes: A61F 2230/0078 : hyperboloidal
• CPC Class Codes: A61F 2250/0018 : differing in elasticity, stiffness or compressibility
• CPC Class Codes: A61F 2250/0039 : differing in diameter
• CPC Class Codes: A61F 2250/0097 : Visible markings, e.g. indicia
• CPC Class Codes: A61F 2250/0098 : radio-opaque, e.g. radio-opaque markers

Abstract

An endoluminal vascular repair system includes an aorta stent graft having a fenestration with a first reinforcement around the fenestration. The fenestration aligns with a branch vessel when deployed. A branch vessel stent graft has a flaring portion at a proximal end of the branch vessel prosthesis that has a second reinforcement around its circumference to engage the reinforcement around the fenestration, and a tubular portion. When deployed, the flaring portion retains the proximal end within the aorta stent graft, and the tubular portion extends through the fenestration and into the branch vessel.

Claims

1. An endoluminal vascular repair system comprising:

an aorta stent graft having a fenestration and a first reinforcement around the fenestration, wherein the fenestration is aligned with a branch vessel when deployed;

a branch vessel stent graft having a flaring portion at a proximal end of the branch vessel stent graft, and a tubular portion, wherein the flared portion retains the proximal end within the aorta stent graft, and the tubular portion extends through the fenestration and into the branch vessel when deployed, and wherein the flaring portion comprises a second reinforcement around its circumference adapted to engage the reinforcement around the fenestration,

wherein the first reinforcement comprises a first ring attached to the aorta stent graft around the fenestration, the second reinforcement comprises a second ring attached to the proximal end of the branch vessel stent graft, and wherein a diameter of the second ring is equal to or greater than the corresponding diameter of the first ring, and

wherein at least one of the first and second rings comprises a resilient material to allow compaction until deployment.

2. The system of claim 1 wherein the diameter of the second ring is greater than the corresponding diameter of the first ring.

3. The system of claim 1 wherein at least a portion of the first ring abuts at least a portion of the second ring.

4. The system of claim 1 wherein the first ring is secured to an inner surface of the aorta stent graft.

5. The system of claim 1 wherein the second ring is secured to an outer surface of the flaring portion.

6. The system of claim 5 wherein the first ring is secured to an inner surface of the aorta stent graft.

7. The system of claim 1 wherein the first and second rings are shaped and sized so as to interlock with each other when deployed.

8. The system of claim 1 wherein at least one of the rings comprises a magnetic material and wherein the two rings are drawn together by a magnetic force when deployed.

9. The system of claim 1 wherein at least one of the rings comprises a shape memory alloy.

10. The system of claim 1 wherein the second ring is expandable from a compacted state to a deployed state, and wherein the diameter of the second ring in the deployed state is equal to or greater than the corresponding diameter of the first ring.

11. A method of effecting an endoluminal vascular repair comprising:

deploying an aorta stent graft having a fenestration and a first reinforcement around the fenestration, so that the fenestration is aligned with a branch vessel;

deploying a branch vessel stent graft having a flared portion with a second reinforcement around a proximal end of the branch vessel stent graft, and a tubular portion, so that the flared portion retains the proximal end within the aorta stent graft, and so that the tubular portion extends through the fenestration and into the branch vessel, and so that the second reinforcement engages the first reinforcement,

wherein the first reinforcement comprises a first ring attached to the aorta stent graft around the fenestration, the second reinforcement comprises a second ring attached to the proximal end of the branch vessel stent graft, and wherein a diameter of the second ring is equal to or greater than the corresponding diameter of the first ring, and

wherein at least one of the first and second rings comprises a resilient material to allow compaction until deployment.

12. The method of claim 11 wherein the second ring is expandable from a compacted state to a deployed state, and wherein the diameter of the second ring in the deployed state is equal to or greater than the corresponding diameter of the first ring.

13. An endoluminal vascular repair system comprising:

an aorta stent graft having a fenestration and a first reinforcement around the fenestration, wherein the fenestration is aligned with a branch vessel when deployed;

a branch vessel stent graft having a flaring portion at a proximal end of the branch vessel stent graft, and a tubular portion, wherein the flared portion retains the proximal end within the aorta stent graft, and the tubular portion extends through the fenestration and into the branch vessel when deployed, and wherein the flaring portion comprises a second reinforcement around its circumference adapted to engage the reinforcement around the fenestration,

wherein the first reinforcement comprises a first ring attached to the aorta stent graft around the fenestration, the second reinforcement comprises a second ring attached to the proximal end of the branch vessel stent graft, and wherein a diameter of the second ring is equal to or greater than the corresponding diameter of the first ring, and

wherein a first inner diameter of the branch vessel stent graft aligned with the fenestration is less than or substantially equal to a second inner diameter of the branch vessel stent graft at a location distal to the fenestration.