Braided Flange Branch Graft for Branch Vessel

• US 20100256726A1
• Filed: 06/15/2010
• Published: 10/07/2010
• Est. Priority Date: 03/13/2007
• Status: Active Grant

• Current Assignee: Medtronic Vascular, Inc. (Medtronic Plc)
• Original Assignee: Medtronic Vascular, Inc. (Medtronic Plc)
• Inventors: Ganesan, Prema, Morris, Jonathan, Yamasaki, Sonny, Erickson, David, Douk, Nareak, Rafiee, Nasser, Rust, Matthew, Hanson, Curtis
• Granted Patent: US 8,262,719 B2
• Time in Patent Office: Days
• US Class Current: 623/1.110
• 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 2/90 characterised by a net-like or mesh-like structure
• CPC Class Codes: A61F 2002/061 provided with means for allowing access to secondary lumens
• CPC Class Codes: A61F 2002/821 Ostial stents
• CPC Class Codes: A61F 2250/0039 differing in diameter
• CPC Class Codes: D04C 1/06 Braid or lace serving particular purposes
• CPC Class Codes: D10B 2509/06 Vascular grafts; stents

Abstract

A braided flange branch graft formed of a braided super elastic memory material includes a neck between an inner flange and an outer flange. The neck is positioned in a side opening in a sidewall of a main stent graft and the inner flange and outer flange are deployed on opposite sides of the sidewall. The inner flange and the outer flange have a diameter greater than a diameter of the side opening in the sidewall of the main stent graft. Thus, the sidewall of the main stent graft is sandwiched between the inner flange and the outer flange securely and simply mounting the braided flange branch graft to the main stent graft. The braided flange has a substantially unobstructed fluid communication passage therethrough. Further, when stretched into a substantially cylindrical shape for delivery, the braided flange branch graft has a small delivery profile and is extremely flexible.

Claims

1-20. -20. (canceled)

21. A delivery system comprising:

a braided flange branch graft formed from a braided super elastic memory material, said braided flange branch graft comprising;

a first flange;

a second flange;

a neck between said first flange and said second flange; and

a trunk extending longitudinally from said second flange, said braided flange branch graft being stretched into a substantially cylindrical shape;

a handle;

an inner member extending distally from said handle, said braided flange branch graft being located over a distal end of said inner member;

a neck hook connected to said neck of said braided flange branch graft;

an inner end hook connected to an inner end of said braided flange branch graft, said first flange being stretched between said inner end hook and said neck hook; and

a base hook connected to a base of said trunk, said second flange being stretched between said neck hook and said base hook.

22. The delivery system of claim 21 wherein said handle comprises:

an inner end hook slider connected to said inner end hook by an inner end hook connector; and

a base hook slider connected to said base hook by a base hook connector.

23. The delivery system of claim 22 wherein said handle further comprises:

an inner end adjustment ring threadedly connected to said inner end hook slider; and

a base adjustment ring threadedly connected to said base hook slider.

24. The delivery system of claim 22 wherein said inner end hook connector comprises a wire.

25. The delivery system of claim 22 wherein said base hook connector comprises a pair of coaxial hypo tubes.

26. The delivery system of claim 21 wherein said neck hook is connected to said inner member.

27. The delivery system of claim 21 wherein said inner member defines a guide wire lumen, said delivery system further comprising a guide wire in said guide wire lumen.

28. The delivery system of claim 21 further comprising an outer end hook connected to an outer end of said braided flange branch graft, said outer end hook stretching said trunk.

29. The delivery system of claim 28 wherein said handle comprises:

an outer end hook slider connected to said outer end hook by an outer end hook connector; and

an outer end adjustment ring threadedly connected to said outer end hook slider.

30. A method of forming an intra-vascular assembly comprising:

deploying a main stent graft comprising a sidewall having a side opening therein;

using an inner end hook, a neck hook, a base hook, and an outer end hook to stretch each of two braided flanges and a trunk of a braided flange branch graft into a substantially cylindrical shape, said braided flange branch graft formed from a braided super elastic memory material, said braided flange branch graft element comprising;

a first flange;

a second flange;

a neck between said first flange and said second flange; and

a trunk extending longitudinally from said second flange, where a substantially unobstructed passage for fluid communication is provided through said braided flange element;

positioning said neck within said side opening;

deploying said first flange inside of said main stent graft by releasing said inner end hook from stretching; and

deploying said second flange outside of said main stent graft by releasing base hook from stretching, wherein said sidewall of said main stent graft is sandwiched between said first flange and said second flange.

31. The method of claim 30 further comprising deploying said trunk by releasing said outer end hook from stretching.