Modular branch vessel stent-graft assembly

• US 20070055350A1
• Filed: 09/02/2005
• Published: 03/08/2007
• Est. Priority Date: 09/02/2005
• Status: Active Grant

• Current Assignee: Medtronic Vascular, Inc. (Medtronic Plc)
• Original Assignee: Medtronic Vascular, Inc. (Medtronic Plc)
• Inventors: Erickson, David, Ganesan, Prema
• Granted Patent: US 7,955,374 B2
• Time in Patent Office: Days
• US Class Current: 623/1.160
• CPC Class Codes: A61F 2/07 Stent-grafts
• 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 2002/061 provided with means for allowing access to secondary lumens
• 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

Abstract

Modular branch vessel stent-graft assemblies for the treatment arterial or vascular disease at the branch of two or more arteries or blood flow passageways, including, for example, abdominal aortic aneurysms are assembled in a patient'"'"'s trunk/parent artery, from at least two components; a first component and a second component. The first and second components each include a first and second window, or fenestration. The second component couples with the first component by fitting at least partially in the first component to form the modular branch vessel stent-graft assembly with two selectively locatable branch openings. As the first and second components are deployed, the second component is selectively position able relative to first component so that the first and second component first and second windows overlap to form two branch openings whose longitudinal and angular positions are selectable within a range.

Claims

1. A modular branch vessel stent-graft assembly comprising:

a first component, said first component comprising;

a first component proximal end with a first component proximal end opening;

a first component distal end with a first component distal end opening;

a first component body connecting said first component proximal end and said first component distal end; and

a first component first window formed in said first component body;

a first component second window formed in said first component body;

a second component, said second component comprising;

a second component proximal end with a second component proximal end opening;

a second component distal end with a second component distal end opening;

a second component body connecting said second component proximal end and said second component distal end; and

a second component first window formed in said second component body;

a second component second window formed in said second component body;

said second component distal end and at least a portion of said second component body being positioned within said first component distal end and at least a portion of said first component body to form said modular branch vessel stent-graft assembly; and

said second component window and said first component window forming two adjustable branch openings in said modular branch vessel stent-graft assembly.

2. The modular branch vessel stent-graft assembly of claim 1, wherein;

at least one of said adjustable branch openings in said modular branch vessel stent-graft assembly has a longitudinal position along a longitudinal axis of said modular branch vessel stent-graft assembly that is adjustable by moving said second component of said modular branch vessel stent-graft assembly with respect to said first component of said modular branch vessel stent-graft assembly along said longitudinal axis of said modular branch vessel stent-graft assembly.

3. The modular branch vessel stent-graft assembly of claim 2, wherein;

at least one of said adjustable branch openings in said modular branch vessel stent-graft assembly has an angular position about said longitudinal axis of said modular branch vessel stent-graft assembly that is predeployment adjustable by rotating said second component of said modular branch vessel stent-graft assembly with respect to said first component of said modular branch vessel stent-graft assembly around said longitudinal axis of said modular branch vessel stent-graft assembly.

4. The modular branch vessel stent-graft assembly of claim 3, wherein;

at least one of said adjustable branch openings in said modular branch vessel stent-graft assembly has an angular position about said longitudinal axis of said modular branch vessel stent-graft assembly that is adjustable by predeployment rotating said first component of said modular branch vessel stent-graft assembly and predeployment rotating said second component of said modular branch vessel stent-graft assembly around said longitudinal axis of said modular branch vessel stent-graft assembly.

5. The modular branch vessel stent-graft assembly of claim 4, wherein;

said first component body connecting said first component proximal end and said first component distal end comprises a stent body mesh coupled to a graft; and

said second component body connecting said second component proximal end and said second component distal end comprises a stent body mesh coupled to a graft.

6. The modular branch vessel stent-graft assembly of claim 5, wherein;

said first component body connecting said first component proximal end and said first component distal end is substantially cylindrical and said first component proximal end opening is substantially cylindrical with a first diameter; and

said second component body connecting said second component proximal end and said second component distal end is substantially cylindrical and said second component proximal end opening is substantially cylindrical with a second diameter, further wherein;

said first diameter is greater than said second diameter.

7. The modular branch vessel stent-graft assembly of claim 1, wherein;

a first adjustable branch opening is longitudinally offset from said second adjustable branch an offset distance along a longitudinal axis of said second component body.

8. The modular branch vessel stent-graft assembly of claim 7, wherein;

said branch opening in said modular branch vessel stent-graft assembly has a longitudinal position along a longitudinal axis of said modular branch vessel stent-graft assembly that is predeployment adjustable by moving said second component of said modular branch vessel stent-graft assembly with respect to said first component of said modular branch vessel stent-graft assembly along said longitudinal axis of said modular branch vessel stent-graft assembly.

9. A modular branch vessel stent-graft assembly comprising:

a first component, said first component comprising;

a first component proximal end with a first component proximal end opening;

a first component distal end with a first component distal end opening;

a first component body connecting said first component proximal end and said first component distal end; and

a first component first window formed in said first component body;

a first component second window formed in said first component body, said first component second window including an attached branch structure;

a second component, said second component comprising;

a second component proximal end with a second component proximal end opening;

a second component distal end with a second component distal end opening;

a second component body connecting said second component proximal end and said second component distal end; and

a second component first window formed in said second component body;

a second component second window formed in said second component body, said second component second window including an attached branch structure;

said second component distal end and at least a portion of said second component body being positioned within said first component proximal end and at least a portion of said first component body to form said modular branch vessel stent-graft assembly; and

said second component window and said first component window forming two adjustable branch openings in said modular branch vessel stent-graft assembly window including attached branch structures.

10. The modular branch vessel stent-graft assembly of claim 9, wherein;

at least one of said adjustable branch openings in said modular branch vessel stent-graft assembly has a longitudinal position along a longitudinal axis of said modular branch vessel stent-graft assembly that is predeployment adjustable by moving said second component of said modular branch vessel stent-graft assembly with respect to said first component of said modular branch vessel stent-graft assembly along said longitudinal axis of said modular branch vessel stent-graft assembly.

11. The modular branch vessel stent-graft assembly of claim 10, wherein;

at least one of said adjustable branch openings in said modular branch vessel stent-graft assembly has an angular position about said longitudinal axis of said modular branch vessel stent-graft assembly that is adjustable by rotating said second component of said modular branch vessel stent-graft assembly with respect to said first component of said modular branch vessel stent-graft assembly around said longitudinal axis of said modular branch vessel stent-graft assembly.

12. The modular branch vessel stent-graft assembly of claim 11, wherein;

at least one of said adjustable branch openings in said modular branch vessel stent-graft assembly has an angular position about said longitudinal axis of said modular branch vessel stent-graft assembly that is adjustable by rotating said first component of said modular branch vessel stent-graft assembly with respect to said second component of said modular branch vessel stent-graft assembly around said longitudinal axis of said modular branch vessel stent-graft assembly.

13. The modular branch vessel stent-graft assembly of claim 12, wherein;

said first component body connecting said first component proximal end and said first component distal end comprises a stent body mesh coupled to a graft; and

said second component body connecting said second component proximal end and said second component distal end comprises a stent body mesh coupled to a graft.

14. The modular branch vessel stent-graft assembly of claim 13, wherein;

said first component body connecting said first component proximal end and said first component distal end is substantially cylindrical and said first component proximal end opening is substantially cylindrical with a first diameter; and

said second component body connecting said second component proximal end and said second component distal end is substantially cylindrical and said second component proximal end opening is substantially cylindrical with a second diameter, further wherein;

said first diameter is greater than said second diameter.

15. The modular branch vessel stent-graft assembly of claim 9, wherein;

a first adjustable branch opening is longitudinally offset from said second adjustable branch an offset distance along a longitudinal axis of said second component body.

16. The modular branch vessel stent-graft assembly of claim 15, wherein;

said branch opening in said modular branch vessel stent-graft assembly has a longitudinal position along a longitudinal axis of said modular branch vessel stent-graft assembly that is adjustable by moving said second component of said modular branch vessel stent-graft assembly with respect to said first component of said modular branch vessel stent-graft assembly along said longitudinal axis of said modular branch vessel stent-graft assembly.

17. A method of deploying a multi component branch stent graft structure consisting of the steps of:

deploying a first cylindrical component having a large first window approximately radially opposed to a substantially smaller than said first window, second window each creating an opening through a wall of said first cylindrical component in a body lumen where said second window is selectively located to match with the first branch vessel branching from the body lumen and then,

deploying in a second cylindrical component having a large first window approximately radially opposed to a substantially smaller than said first window, second window each creating an opening through a wall of said second cylindrical component within said first cylindrical component where said second window of said second cylindrical component is selectively located to match the second branch vessel branching from the body lumen and located within said large first window of said first cylindrical component.