CN-114173706-B - Modular multi-branch stent assembly and method

Abstract

The technology of the present disclosure generally relates to a module support device including a body configured to be deployed in an ascending aorta, a bypass gate configured to be deployed in the aorta, and bifurcated contralateral branches. The bifurcated contralateral branch includes a single proximal branch bifurcated (split) into a first distal branch and a second distal branch. By forming the bifurcated contralateral branch to include a single proximal branch bifurcated into the distal branches, it is easier to guide a guidewire at the proximal end into the relatively larger opening of the bifurcated contralateral branch than to guide a guidewire into the two smaller branches extending distally from the body. The bifurcated contralateral branch cannula is therefore relatively simple, thereby simplifying the procedure. Furthermore, the parallel design mimics anatomical vessel bifurcation to limit flow disruption.

Inventors

• K. Perkins
• Z. Boglin
• M. Stig
• BUNTON JOHN
• S - carat Parsons
• T.Luo
• M.Yang

Assignees

• 美敦力瓦斯科尔勒公司

Dates

Publication Date

20260505

Application Date

20200706

Priority Date

20190731

Claims (15)

1. 1. An assembly, comprising: a first module support device comprising: a body configured to be deployed in the ascending aorta; A bypass gate configured to be deployed in an aorta, and A bifurcated contralateral branch comprising: A proximal branch extending from the body; a first distal branch extending from the proximal branch, and A second distal branch extending from the proximal branch, wherein the first distal branch is connected to the second distal branch at a septum, Wherein the graft material of the main body, the bypass gate and the bifurcated contralateral branch is a cut and sutured single piece of graft material, Wherein the diameter of the bypass gate is greater than the diameter of the bifurcated contralateral branch, the length of the bifurcated contralateral branch is shorter than the length of the bypass gate, and the radial force of the bypass gate is configured to be lower than the radial force of the bifurcated contralateral branch.
2. 2. The combination of claim 1, wherein the bifurcated contralateral branch diverges from a single proximal opening to two distal openings.
3. 3. The assembly of claim 1, wherein the proximal branch bifurcates into the first distal branch and the second distal branch.
4. 4. The assembly of claim 3, wherein the bifurcated contralateral branch further includes a transition region in which the proximal branch diverges into the first distal branch and the second distal branch.
5. 5. The assembly of claim 4, wherein the proximal branch extends distally from a proximal end of the bifurcated contralateral branch to the transition region and includes a single lumen.
6. 6. The assembly of claim 5, wherein: The first distal branch extends distally from the transition region to a distal end of the first distal branch and includes a single lumen.
7. 7. The assembly of claim 6, wherein: the second distal branch extends distally from the transition region to a distal end of the second distal branch and includes a single lumen.
8. 8. The assembly of claim 1, wherein: the proximal branch comprising a longitudinal axis; the first distal branch including a longitudinal axis, and The second distal branch includes a longitudinal axis, the longitudinal axes of the proximal branch, the first distal branch, and the second distal branch being parallel to one another when the first module support device is in the relaxed configuration.
9. 9. The combination of claim 1, wherein the second distal branch is radially inward of the first distal branch.
10. 10. The assembly of claim 1, wherein the second distal branch is located between the bypass gate and the first distal branch.
11. 11. An assembly, comprising: a first module support device comprising: a body configured to be deployed in the ascending aorta; A bypass gate configured to be deployed in an aorta, and A bifurcated contralateral branch comprising: configured to perfuse a first distal branch of a brachiocephalic artery, and A second distal branch configured to perfuse the left common carotid artery, wherein the first distal branch is connected to the second distal branch at a septum, and The assembly further includes a proximal cuff configured to be coupled to the body, Wherein the diameter of the bypass gate is greater than the diameter of the bifurcated contralateral branch, the length of the bifurcated contralateral branch is shorter than the length of the bypass gate, and the radial force of the bypass gate is configured to be lower than the radial force of the bifurcated contralateral branch.
12. 12. The assembly of claim 11, further comprising: a first bridging stent graft configured to be deployed in the second distal branch and in the left common carotid artery, and A second bridging stent graft configured to be deployed in the first distal branch and the brachiocephalic artery.
13. 13. The assembly of claim 11, further comprising a tube graft configured to be coupled to the bypass gate.
14. 14. The assembly of claim 11, further comprising: a second module support device comprising: a body configured to be deployed within the bypass door of the first module support device; Bypass door, and Arterial legs.
15. 15. The assembly of claim 14, further comprising a bridging stent graft configured to be coupled to the arterial leg and left subclavian artery of the second modular stent device.

Description

Modular multi-branch stent assembly and method Technical Field The present technology relates generally to intravascular devices and methods. More particularly, the present application relates to devices for treating intravascular disorders. Background Aneurysms, dissection, penetrating ulcers, intramural hematomas and/or transection can occur in blood vessels, and most typically occur in the aorta and peripheral arteries. The diseased region of the aorta may extend to an area with a vascular bifurcation or aortic segment, from which smaller "branch" arteries extend. The diseased portion of the aorta may be bypassed by using a stent graft placed in a blood vessel that spans the diseased portion of the aorta to seal the diseased portion from further exposure to blood flowing through the aorta. The use of stent grafts to bypass the diseased portion of the aorta internally is not without challenges. In particular, care must be taken so that critical branch arteries are not covered or occluded by stent-grafts, which must seal against the aortic wall and provide a flow conduit for blood to flow through the diseased portion. Disclosure of Invention The technology of the present disclosure generally relates to a module support device including a body configured to be deployed in an ascending aorta, a bypass gate configured to be deployed in the aorta, and bifurcated contralateral branches. The bifurcated contralateral branch includes a single proximal branch bifurcated (split) into a first distal branch and a second distal branch. By forming the bifurcated contralateral branch to include a single proximal branch that diverges into a distal branch, it is easier to guide the guide wire into the relatively larger opening of the bifurcated contralateral branch at the proximal end than to guide the guide wire into two smaller branches extending distally from the body. Thus, the bifurcated contralateral branched cannula is relatively simple, thereby simplifying the procedure. Furthermore, the parallel design mimics anatomical vessel bifurcation to limit flow disruption. In one aspect, the present disclosure provides an assembly comprising a first module support device having a main body configured to be deployed in an ascending aorta, a bypass gate configured to be deployed in the aorta, and bifurcated contralateral branches. The bifurcated contralateral branch includes a proximal branch extending from the main body, a first distal branch extending from the proximal branch, and a second distal branch extending from the proximal branch. The first distal branch is connected to the second distal branch at the septum. In another aspect, the present disclosure provides an assembly comprising a first module support device having a main body configured to be deployed in an ascending aorta, a bypass gate configured to be deployed in the aorta, and bifurcated contralateral branches. The bifurcated contralateral branch includes a first distal branch configured to perfuse the brachiocephalic artery and a second distal branch configured to perfuse the left common carotid artery. The first distal branch is connected to the second distal branch at the septum. In yet another aspect, the present disclosure provides a method comprising deploying a first module support device comprising deploying a body of the first module support device in an ascending aorta, deploying a bypass portal of the first module support device in the aorta, and deploying a bifurcated contralateral branch of the first module support device proximal to a brachiocephalic artery. The bifurcated contralateral branch includes a first distal branch connected to a second distal branch at a septum. The details of one or more aspects of the disclosure are set forth in the accompanying drawings and the description below. Other features, objects, and advantages of the technology described in this disclosure will be apparent from the description and drawings, and from the claims. Drawings Fig. 1 is a side plan view of a module support device according to one embodiment. Fig. 2 is a perspective view of the module support device of fig. 1 according to one embodiment. Fig. 3 is a cross-sectional view of a vascular assembly including the module support device of fig. 1 and 2 during deployment according to one embodiment. Fig. 4 is a cross-sectional view of the vascular assembly of fig. 3 at a later stage during deployment of the first bridging stent graft, according to one embodiment. Fig. 5 is a cross-sectional view of the vascular assembly of fig. 4 at a later stage during deployment of a second bridging stent graft, according to one embodiment. Fig. 6 is a cross-sectional view of the vascular assembly of fig. 5 at a later stage in deploying a tube graft into a module support device, according to one embodiment. Fig. 7 is a side plan view of a second module support device according to one embodiment. Fig. 8 is a perspective view of the second module support device of fig. 7 a