Branch vessel prosthesis with anchoring device and method

• US 20050149166A1
• Filed: 11/08/2004
• Published: 07/07/2005
• Est. Priority Date: 11/08/2003
• Status: Abandoned Application

• Current Assignee: Cook Incorporated (Cook Group Incorporated)
• Original Assignee: Cook Incorporated (Cook Group Incorporated)
• Inventors: Schaeffer, Darin G., Hoffa, Michael C.
• Application Number:
  US10/984,167
• Publication Number:
  US 20050149166A1
• Time in Patent Office: Days
• US Class Current: 623/1.130
• 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

A stent graft system for intraluminal deployment in an aorta and a branch vessel includes an aorta stent graft for deployment within an aorta and defining a lumen for the passage of blood therethrough, and having a fenestration aligned so as to allow blood to flow to a contiguous branch vessel. A branch vessel prosthesis having a flaring portion, a tubular portion and an anchoring device, are configured so that, upon deployment, the tubular portion passes through the fenestration and into the branch vessel, the anchoring device affixes the position of the tubular portion within the branch vessel, and the flaring portion is retained within the lumen of the aorta stent graft and is maintained against an inside wall of the aorta stent graft to thereby bias the aorta stent graft toward the branch vessel.

Claims

1. A stent graft system for intraluminal deployment in an aorta and a branch vessel comprising:

an aorta stent graft for deployment within an the aorta and defining a lumen for the passage of blood therethrough, and having a fenestration aligned so as to allow blood to flow to a contiguous branch vessel; and

a branch vessel prosthesis having a flaring portion, a tubular portion and an anchoring device, wherein the flaring portion, tubular portion and anchoring device are configured so that, upon deployment, the tubular portion passes through the fenestration and into the branch vessel, the anchoring device affixes the position of the tubular portion within the branch vessel, and the flaring portion is retained within the lumen of the aorta stent graft and is maintained against an inside wall of the aorta stent graft to thereby bias the aorta stent graft toward the branch vessel.

2. The system of claim 1 wherein the anchoring device comprises barbs extending from the tubular portion.

3. The system of claim 2 wherein the barbs are retained under a cap until deployment in the branch vessel.

4. The system of claim 3 wherein the cap is released during deployment by a trigger wire.

5. The system of claim 1 wherein the branch vessel comprises a graft material affixed to at least the flaring portion of the branch vessel prosthesis to thereby form a seal with the inner wall.

6. The system of claim 1 further comprising a graft material affixed to the branch vessel prosthesis to form a lumen through which blood passes from the aorta stent graft into the branch vessel.

7. The system of claim 1 wherein the flaring portion further comprises a flaring portion anchoring device whereby the flaring portion is affixed to an inner surface of the aorta stent graft upon deployment.

8. The system of claim 7 wherein the flaring portion anchoring device comprises barbs extending into the inner surface of the aorta stent graft upon deployment.

9. The system of claim 1 wherein the branch vessel prosthesis comprises metal struts and wherein metal struts in the flaring portion, when deployed, are curved through an arc of more than 90 degrees with respect to the tubular portion.

10. The system of claim 9 wherein the metal struts in the flaring portion, when deployed, are curved through an arc of about 180 degrees with respect to the tubular portion.

11. The system of claim 1 wherein the flaring portion forms an acute angle with the tubular portion when deployed.

12. The system of claim 1 wherein the branch vessel comprises a stent with metal struts and wherein metal struts in the flaring portion form an acute angle with the tubular portion when deployed.

13. The system of claim 1 wherein the branch vessel has a compact configuration so as to fit within a delivery catheter, and wherein flaring portion is bent so as to lie over the tubular portion.

14. The system of claim 1 wherein tubular portion comprises a plurality of Z-stents affixed to a lumen of graft material.

15. The system of claim 14 wherein the flaring portion comprises a Z-stent affixed to graft material.

16. The system of claim 1 further comprising at least one positional indicator on the tubular portion at a proximal end.

17. The system of claim 1 further comprising at least one positional indicator on the tubular portion at a distal end.

18. The system of claim 1 further comprising at least one at least one positional indicator marker located on the tubular portion so as to line up with the fenestration.

19. The system of claim 1 wherein the aorta stent graft includes a seating portion around the fenestration for receiving the flaring portion and forming a seal therewith.

20. A method of repairing a defect in an aorta and/or a branch vessel in a patient having an aorta stent graft defining a lumen and having a fenestration aligned with a branch vessel, comprising,

providing a branch vessel prosthesis having a flaring portion, a tubular portion and an anchoring device;

endoluminally deploying the branch vessel prosthesis such that the tubular portion passes through the fenestration and into the branch vessel, and the flaring portion is retained within the lumen of the aorta stent graft; and

affixing the position of the tubular portion at a sufficient depth such that the flaring portion is maintained against an inside wall of the aorta stent graft to thereby bias the aorta stent graft toward the branch vessel.