Modular stent device for multiple vessels and method
The techniques of this disclosure generally relate to modular stent device and method of deploying the same. The method includes introducing a delivery system including the modular stent device via supra aortic access. The delivery system is advanced into the ascending aorta. Once positioned, the modular stent device is deployed from the delivery system such that an artery leg of the modular stent device engages the brachiocephalic artery and a bypass gate engages the aorta, wherein the artery leg partially collapses the bypass gate. The artery leg has a greater radial force than the bypass gate such that the artery leg remains un-collapsed and opened. Accordingly, blood flow through the artery leg and perfusion of the brachiocephalic artery and preservation of blood flow to cerebral territories including the brain is insured.
1 . An assembly comprising:
a modular stent device comprising:
a main body having a proximal end and a distal end, the main body having a main body diameter extending from the proximal end to the distal end of the main body;
a bypass gate having a proximal end and a distal end, the bypass gate continuously extending distally from the distal end of the main body;
an artery leg having a proximal end and a distal end, the artery leg having an artery leg diameter extending from the proximal end to the distal end of the artery leg, the artery leg extending distally from the distal end of the main body; and
a transition region where the main body meets the bypass gate and the artery leg,
wherein the proximal ends of the bypass gate and the artery leg contact in the transition region, the proximal end of the bypass gate and the distal end of the main body contact in the transition region, the proximal end of the artery leg and the distal end of the main body contact in the transition region radially opposite the contact of the proximal end of the bypass gate and the distal end of the main body in the transition region,
wherein the modular stent device continuously extends distally from the proximal end of the main body to the distal end of the bypass gate or the artery leg,
wherein the artery leg has a greater radial force than a radial force of the bypass gate,
wherein the main body has a first longitudinal axis, the bypass gate has a second longitudinal axis, and the artery leg has a third longitudinal axis, the first, second, and third longitudinal axes are parallel with one another when the modular stent device is in a relaxed configuration,
wherein a length of the artery leg is less than a length of the bypass gate.
2 . The assembly of claim 1 wherein the length of the artery leg is measured along the third longitudinal axis, and the length of the bypass gate is measured along the second longitudinal axis.
3 . The assembly of claim 1 further comprising a radiopaque marker in line with the artery leg.
4 . The assembly of claim 1 further comprising a tip capture mechanism to control proximal deployment accuracy of the main body.
5 . The assembly of claim 1 wherein the main body has a main body diameter, the bypass gate has a bypass gate diameter, the main body diameter being greater than the bypass gate diameter and the artery leg diameter together at the transition region.
6 . The assembly of claim 5 wherein the bypass gate and the artery leg are located within an imaginary cylinder defined by the main body extended in a distal direction at the transition region.
7 . The assembly of claim 5 wherein the bypass gate diameter is greater than the artery leg diameter at the transition region.
8 . The assembly of claim 1 wherein stents of the artery leg have a greater radial force than stents of the bypass gate.
9 . The assembly of claim 1 wherein the bypass gate is configured to collapse relative to the artery leg.
10 . The assembly of claim 1 further comprising a tube graft coupled to the bypass gate and extending distally therefrom.
11 . The assembly of claim 1 further comprising a proximal cuff coupled to the main body and extending proximally therefrom.
12 . The assembly of claim 1 wherein the transition region includes a radiopaque marker.
13 . The assembly of claim 1 , wherein the bypass gate and the artery leg continuously extend distally from the distal end of the main body.
14 . The assembly of claim 1 , wherein the main body flares at a proximal end thereof.
15 . The assembly of claim 1 , wherein the bypass gate flares at a distal end thereof and the artery leg flares at a distal end thereof.
16 . An assembly comprising:
a modular stent device comprising:
a main body having a proximal end and a distal end, the distal end of the main body having a circular profile;
a bypass gate having a proximal end and a distal end, the proximal end of the bypass gate having a circular profile, the bypass gate continuously extending distally from the distal end of the main body;
an artery leg having a proximal end and a distal end, the proximal end of the artery leg having a circular profile, the artery leg having an artery leg diameter extending from the proximal end to the distal end of the artery leg, the artery leg extending distally from the distal end of the main body; and
a transition region where the main body meets the bypass gate and the artery leg to form a first transition region surface and a second transition region surface spaced apart from the first transition region surface, the first transition region surface bounded by a first portion of the circular profile of the distal end of the main body, a first portion of the circular profile of the proximal end of the bypass gate, and a first portion of the circular profile of the proximal end of the artery leg, the second transition region surface bounded by a second portion of the circular profile of the distal end of the main body, a second portion of the circular profile of the proximal end of the bypass gate, and a second portion of the circular profile of the proximal end of the artery leg, the first portions of the circular profiles of the distal end of the main body and the proximal ends of the bypass gate and the artery leg are different than the second portions of the circular profiles of the distal end of the main body and the proximal ends of the bypass gate and the artery leg,
wherein the modular stent device continuously extends distally from the proximal end of the main body to the distal end of the bypass gate or the artery leg,
wherein the artery leg has a greater radial force than a radial force of the bypass gate,
wherein the main body has a first longitudinal axis, the bypass gate has a second longitudinal axis, and the artery leg has a third longitudinal axis, the first, second, and third longitudinal axes are parallel with one another when the modular stent device is in a relaxed configuration,
wherein a length of the artery leg is less than a length of the bypass gate.
17 . The assembly of claim 16 wherein the bypass gate flares at a distal end thereof.
18 . The assembly of claim 16 wherein the main body flares at a proximal end thereof.
19 . The assembly of claim 16 wherein the bypass gate flares at a distal end thereof and the main body flares at a proximal end thereof.
20 . An assembly comprising:
a modular stent device comprising:
a main body having a proximal end and a distal end;
a bypass gate having a proximal end and a distal end, the bypass gate continuously extending distally from the distal end of the main body to the distal end of the bypass gate without bifurcation, the bypass gate having a bypass gate diameter; and
an artery leg having a proximal end and a distal end, the artery leg continuously extending distally from the distal end of the main body to the distal end of the artery leg without bifurcation, the artery leg having an artery leg diameter; and
a transition region where the main body meets the bypass gate and the artery leg to form a closed transition region surface bounded by a bounding portion of the distal end of the main body, and the proximal ends of the bypass gate, and the artery leg, the bounding portion includes a main body/bypass gate contacting region where the distal end of the main body contacts the proximal end of the bypass gate, a bypass gate/artery leg contacting region where the proximal end of the bypass gate contacts the proximal end of the artery leg, and an artery leg/main body contacting region where the proximal end of the artery leg contacts the distal end of the main body, the main body/bypass gate, bypass gate/artery leg, and artery leg/main body contacting regions radially align,
wherein the artery leg has a greater radial force than a radial force of the bypass gate,
wherein the main body has a first longitudinal axis, the bypass gate has a second longitudinal axis, and the artery leg has a third longitudinal axis, the first, second, and third longitudinal axes are parallel with one another when the modular stent device is in a relaxed configuration,
wherein a length of the artery leg is less than a length of the bypass gate.