ILIAC BRANCH DEVICE AND METHOD

• US 20170296324A1
• Filed: 04/13/2016
• Published: 10/19/2017
• Est. Priority Date: 04/13/2016
• Status: Active Grant

• Current Assignee: Medtronic Vascular, Inc. (Medtronic Plc)
• Original Assignee: Medtronic Vascular, Inc. (Medtronic Plc)
• Inventors: Argentine, Jeffery
• Granted Patent: US 9,987,122 B2
• Time in Patent Office: Days
• CPC Class Codes: A61F 2/07 Stent-grafts
• CPC Class Codes: A61F 2/844 folded prior to deployment
• CPC Class Codes: A61F 2002/065 Y-shaped blood vessels
• CPC Class Codes: A61F 2002/075 the stent being loosely attached to the graft material, e.g. by stitching
• CPC Class Codes: A61F 2002/826 more than one stent being applied sequentially
• 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 2230/001 Figure-8-shaped, e.g. hourglass-shaped
• CPC Class Codes: A61F 2240/001 Designing or manufacturing processes
• CPC Class Codes: A61F 2250/0037 differing in height or in length
• CPC Class Codes: A61F 2250/0039 differing in diameter
• CPC Class Codes: A61F 2250/0063 Nested prosthetic parts

Abstract

An iliac branch device includes an iliac septum limb configured to be deployed in the common iliac artery. The iliac septum limb includes a graft material, a proximal end, and a septum. The graft material defines a common iliac lumen extending between the proximal end and the septum, the graft material and the septum defining an internal iliac lumen and an external iliac lumen. The iliac branch device including the iliac septum limb has several modes of adjustability. In addition, the iliac branch device has a relatively small cross-sectional area allowing the iliac branch device to treat relatively small iliac aneurysms in short common iliac arteries. This allows the iliac aneurysms to be treated at very early stages of the disease.

Claims

1. An iliac branch device comprising:

an iliac septum limb configured to be deployed in the common iliac artery, the iliac septum limb comprising;

a graft material;

a proximal end; and

a septum, wherein the graft material defines a common iliac lumen extending between the proximal end and the septum, the graft material and the septum defining an internal iliac lumen and an external iliac lumen.

2. The iliac branch device of claim 1 further comprising:

an attachment structure attaching the graft material together to create the septum.

3. The iliac branch device of claim 2 wherein the attachment structure comprises stitching.

4. The iliac branch device of claim 1 wherein a diameter of the internal iliac lumen is less than a diameter of the external iliac lumen.

5. The iliac branch device of claim 4 wherein a diameter of the common iliac lumen is greater than the diameter of the external iliac lumen.

6. The iliac branch device of claim 1 wherein the iliac septum limb further comprises a self-expanding structure attached to the graft material at the proximal end.

7. The iliac branch device of claim 6 further comprising an aortic bifurcated stent graft comprising a first distal leg and a second distal leg, the self-expanding structure coupling the iliac septum limb inside of the first distal leg.

8. The iliac branch device of claim 7 wherein the first distal leg is shorter than the second distal leg.

9. The iliac branch device of claim 1 further comprising an internal iliac stent graft coupled within internal iliac lumen and an external iliac stent graft coupled within the external iliac lumen.

10. A method of deploying an iliac branch device comprising:

deploying an aortic bifurcated stent graft into the aorta; and

deploying a proximal end of an iliac septum limb into a first distal leg of the aortic bifurcated stent graft, wherein the deploying the proximal end comprises spacing a distal end of the iliac septum limb a predefined distance above a bifurcation of an internal iliac artery and an external iliac artery.

11. The method of claim 10 wherein the predefined distance is 10 millimeters (mm).

12. The method of claim 10 wherein the aortic bifurcated stent graft further comprises a second distal leg.

13. The method of claim 12 wherein the first distal leg is shorter than the second distal leg.

14. The method of claim 10 further comprising:

deploying an internal iliac stent graft within an internal iliac lumen of the iliac septum limb; and

deploying an external iliac stent graft within an external iliac lumen of the iliac septum limb.

15. The method of claim 14 wherein a diameter of the internal iliac stent graft is less than a diameter of the external iliac stent graft.

16. The method of claim 14 further comprising deploying an occlusion balloon within the external iliac lumen prior to the deploying the internal iliac stent graft.

17. The method of claim 16 further comprising removing the occlusion balloon after the deploying the internal iliac stent graft.

18. A method of fabricating an iliac branch device comprising:

providing a cylindrical graft material;

coupling a stent to a proximal end of the graft material;

creating a septum in the graft material, wherein the graft material defines a common iliac lumen extending between the proximal end and the septum, the graft material and the septum defining an internal iliac lumen and an external iliac lumen.

19. The method of claim 18 wherein the creating comprises stitching the graft material.

20. The method of claim 18 wherein a diameter of the internal iliac lumen is less than a diameter of the external iliac lumen.