Bifurcating branch modular iliac branch device

Patent metadata

Field	Value
Publication number	US-2020375724-A1
Application number	US-202016855780-A
Country	US
Kind code	A1
Filing date	Apr 22, 2020
Priority date	May 31, 2019
Publication date	Dec 3, 2020
Grant date	—

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 bifurcated stent-graft comprising:
a body;
a first branch limb; and
a second branch limb;
a first bifurcating branch device comprising:
a body segment coupled to the first branch limb of the bifurcated stent-graft;
a first branch limb; and
a second branch limb;
a first branch extension within the first branch limb of the first bifurcating branch device and within an external iliac artery.

2 . The stent-graft system of claim 1 further comprising:
a second branch extension within the second branch limb of the first bifurcating branch device and within an internal iliac artery.

3 . The stent-graft system of claim 1 further comprising a second bifurcating branch device comprising:
a body segment coupled to the second branch limb of the bifurcated stent-graft;
a first branch limb; and
a second branch limb.

4 . The stent-graft system of claim 3 further comprising:
a third branch extension within the first branch limb of the second bifurcating branch device and within a contralateral external iliac artery.

5 . The stent-graft system of claim 4 further comprising:
a fourth branch extension within the second branch limb of the second bifurcating branch device and within a contralateral internal iliac artery.

6 . The stent-graft system of claim 1 further comprising:
a third branch extension within the second branch limb of the bifurcated stent-graft.

7 . The stent-graft system of claim 6 wherein the third branch extension is within a contralateral external iliac artery.

8 . The stent-graft system of claim 1 wherein the first branch limb of the first bifurcating branch device moves independent of the second branch limb of the first bifurcating branch device.

9 . The stent-graft system of claim 1 wherein the body segment of the first bifurcating branch device comprises a nonflared proximal portion and a flared portion.

10 . The stent-graft system of claim 9 wherein the first bifurcating branch device further comprises a lower segment comprising the first branch limb of the first bifurcating branch device and the second branch limb of the first bifurcating branch device.

11 . The stent-graft system of claim 10 wherein the flared portion is between the nonflared proximal portion and the lower segment.

12 . The stent-graft system of claim 11 wherein the flared portion has an increase in diameter between the nonflared proximal portion and the lower segment.

13 . A method comprising:
deploying a bifurcated stent-graft within an aorta proximal to an aortic bifurcation; deploying a body segment of a first bifurcating branch device coupled to a first branch limb of the bifurcated stent-graft; and deploying a first branch extension coupled to a first branch limb of the first bifurcating branch device and within a first vessel.

14 . The method of claim 13 wherein the first vessel is selected from the group consisting of an external iliac artery and an internal iliac artery.

15 . The method of claim 13 further comprising deploying a second branch extension within a second branch limb of the first bifurcating branch device and within a second vessel.

16 . The method of claim 15 wherein the second branch extension is delivered via supra-aortic access.

17 . The method of claim 15 wherein the deploying the second branch extension comprises:
advancing a steerable catheter through a second branch limb of the bifurcated stent-graft;
deflecting a distal tip of the steerable catheter to point into the second branch limb of the first bifurcating branch device;
passing a first guidewire through the steerable catheter and the second branch limb of the first bifurcating branch device to be within the second vessel; and
advancing a delivery system comprising the second branch extension over a second guidewire extending through the steerable catheter and the second branch limb of the first bifurcating branch device to be within the second vessel, wherein during the advancing the delivery system, constant tension is maintained on the first guidewire to prevent the steerable catheter from straightening out.

18 . A bifurcating branch device comprising:
an upper segment comprising:
a nonflared portion; and
a flared portion having a greater diameter than the nonflared portion; and
a lower segment comprising:
a first branch limb; and
a second branch limb, wherein the flared portion is located between the nonflared portion and the lower segment.

19 . The bifurcated branch device of claim 18 wherein the first branch limb is configured to perfuse an external iliac artery.

20 . The bifurcated branch device of claim 19 wherein the second branch limb is configured to perfuse an internal iliac artery.

Assignees

• Medtronic Vascular Inc

Inventors

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

Classifications

• A61F2/07 Primary

  Stent-grafts · CPC title

• A61F2/856

  Single tubular stent with a side portal passage · CPC title

• A61F2002/067

  modular · CPC title

• A61F2210/0014

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

• A61F2/954

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