Bifurcating branch modular iliac branch device

Patent metadata

Field	Value
Publication number	US-12350143-B2
Application number	US-202217708904-A
Country	US
Kind code	B2
Filing date	Mar 30, 2022
Priority date	May 31, 2019
Publication date	Jul 8, 2025
Grant date	Jul 8, 2025

Abstract

The techniques of this disclosure generally relate to a stent-graft system including a bifurcated stent-graft, a first bifurcating branch device, and a first branch extension. The bifurcated stent-graft includes a body, a first branch limb, and a second branch limb. The first bifurcating branch device includes a body segment coupled to the first branch limb of the bifurcated stent-graft, a first branch limb, and a second branch limb. The first branch extension is within the first branch limb of the first bifurcating branch device and within an external iliac artery. The first bifurcating branch device has a wide patient applicability since the treatment can be extended proximal to the anatomical iliac bifurcation and is not limited by the common iliac artery length. The stent-graft system is suitable to treat a wide range of internal and external iliac artery diameters.

First claim

What is claimed is:

1. A stent-graft system comprising:
a bifurcating branch device comprising:
a body segment comprising a nonflared proximal portion and a flared distal portion, the nonflared proximal portion extends between a proximal end and a distal end, the flared distal portion extends from the distal end of the nonflared proximal portion to a distal end; and
a lower segment attached to the flared portion, the lower segment comprising:
a proximal lower segment extending from the distal end of the flared distal portion of the body segment to a distal end;
a first branch limb extending from the distal end of the proximal lower segment; and
a second branch limb extending from the distal end of the proximal lower segment,

the nonflared proximal portion and the flared distal portion of the body segment collectively comprise a single integrated non-overlapping graft material.

2. The stent-graft system of claim 1 wherein the nonflared proximal portion and the flared distal portion of the body segment and the first and second branch limbs of the lower segment collectively comprise the single integrated non-overlapping graft material.

3. The stent-graft system of claim 1 wherein the flared distal portion is between the nonflared proximal portion and the lower segment.

4. The stent-graft system of claim 1 wherein the flared distal portion has an increase in diameter between the nonflared proximal portion and the lower segment.

5. The stent-graft system of claim 4 wherein a total diameter of the first branch limb and the second branch limb is greater than a diameter of the nonflared proximal portion of the body segment, the total diameter being a diameter of the first branch limb added to a diameter of the second branch limb.

6. The stent-graft system of claim 1 wherein the proximal lower segment is bifurcated into the first branch limb and the second branch limb.

7. The stent-graft system of claim 1 wherein the first branch limb is configured to perfuse an external iliac artery.

8. The stent-graft system of claim 7 wherein the second branch limb is configured to perfuse an internal iliac artery.

9. The stent-graft system of claim 1 wherein the first branch limb has a length greater than a length of the second branch limb.

10. The stent-graft system of claim 1 wherein a distal end of the first branch limb is flared.

11. The stent-graft system of claim 1 wherein the first branch limb has a diameter greater than a diameter of the second branch limb.

12. A stent-graft system comprising:
a bifurcating branch device comprising:
a body segment comprising a nonflared proximal portion and a flared distal portion, the nonflared proximal portion extends between a proximal end and a distal end, the flared distal portion extends from the distal end of the nonflared proximal portion to a distal end; and
a lower segment comprising:
a proximal lower segment extending from the distal end of the flared distal portion of the body segment to a distal end;
a first branch limb extending from the distal end of the proximal lower segment; and
a second branch limb extending from the distal end of the proximal lower segment, wherein the first branch limb has a first branch limb length and the second branch limb has a second branch limb length, wherein the proximal lower segment, the first branch limb, and the second branch limb of the lower segment collectively comprise a single integrated non-overlapping graft material.

13. The stent-graft system of claim 12 wherein the first branch limb length is greater than the second branch limb length.

14. The stent-graft system of claim 13 wherein the second branch limb is configured to perfuse an internal iliac artery.

15. The stent-graft system of claim 14 further comprising a branch extension configured to extend within the second branch limb and extend within the internal iliac artery.

16. The stent-graft system of claim 12 wherein the first branch limb is configured to extend further within the external iliac artery than the second branch limb is configured to extend within the internal iliac artery.

17. The stent-graft system of claim 12 wherein the bifurcating branch device is asymmetric.

18. A stent-graft system comprising:
a bifurcated stent-graft comprising:
a body;
a first branch limb; and
a second branch limb;

a bifurcating branch device comprising:
a body segment comprising a nonflared proximal portion and a flared distal portion;
a first branch limb having a proximal segment having a proximal segment diameter and a distal segment including a distal flared portion and a distal nonflared portion having a distal nonflared portion diameter greater than the proximal segment diameter; and
a second branch limb.

19. The stent-graft of claim 18 wherein the second branch limb of the bifurcating branch has a second branch device limb diameter less than the proximal segment diameter and the distal nonflared portion diameter.

20. The stent-graft system of claim 18 wherein the distal nonflared portion is more distal than a distal end of the second branch limb of the bifurcating branch device.

Assignees

• Medtronic Vascular Inc

Inventors

• Perkins Keith
• Rowe Travis
• Stiger Mark
• Young Mark
• Benton Julie
• Claessens Steven

Classifications

• A61F2210/0014

  using shape memory or superelastic materials, e.g. nitinol · CPC title

• A61F2002/067

  modular · CPC title

• A61F2/954

  for placing stents or stent-grafts in a bifurcation · CPC title

• A61F2/856

  Single tubular stent with a side portal passage · CPC title

• A61F2250/0039

  differing in diameter · CPC title