Support structures for prostheses with branching portions
View Patent ↗The present embodiments provide an endoluminal prosthesis, comprising a prosthetic trunk and a prosthetic branch, each comprising proximal and distal ends and a lumen extending therebetween. The proximal end of the prosthetic branch is secured around an aperture formed in a side surface of the prosthetic trunk. A support structure is coupled to the prosthetic branch. In certain embodiments, a proximal end of the support structure comprises a first width, and a distal end of the support structure comprises a second width, wherein the first width is less than the second width.
1. An endoluminal prosthesis, comprising:
a prosthetic trunk comprising proximal and distal ends and a lumen extending therebetween;
a prosthetic branch comprising proximal and distal ends and a lumen extending therebetween, wherein the proximal end of the prosthetic branch is secured around an aperture formed in a side surface of the prosthetic trunk; and
a support structure coupled to the prosthetic branch,
wherein a proximal end of the support structure comprises a first width, and a distal end of the support structure comprises a second width, wherein the first width is less than the second width,
wherein the support structure comprises undulations that are transverse to a longitudinal axis of the prosthetic branch and the amplitude of the undulations increases in a direction from the proximal end towards the distal end of the prosthetic branch.
2. The endoluminal prosthesis of claim 1 , wherein the support structure extends less than 360 degrees circumferentially in a deployed state.
3. The endoluminal prosthesis of claim 2 , wherein the support structure comprises a deployed state having a concave shape relative to the prosthetic trunk.
4. The endoluminal prosthesis of claim 1 , wherein the support structure comprises boundaries forming a pattern that corresponds to a shape of the aperture in the prosthetic trunk.
5. The endoluminal prosthesis of claim 1 , wherein the aperture formed in the prosthetic trunk comprises an outer perimeter, wherein in an expanded state the support structure is positioned above the aperture in a manner radially outside of the aperture and within axial boundaries formed by the outer perimeter of the aperture.
6. The endoluminal prosthesis of claim 1 , wherein less than 10 percent of material of the support structure is disposed outside of a circumferential boundary formed by the outer perimeter of the aperture of the prosthetic trunk.
7. The endoluminal prosthesis of claim 1 , further comprising a coil coupled to the prosthetic branch and disposed distally of the support structure.
8. The endoluminal prosthesis of claim 1 , further comprising a Z-stent coupled to the prosthetic branch and disposed distally of the support structure.
9. The endoluminal prosthesis of claim 1 , wherein the support structure lacks an attachment to the prosthetic trunk.
10. An endoluminal prosthesis, comprising:
a prosthetic trunk comprising proximal and distal ends and a lumen extending therebetween;
a prosthetic branch comprising proximal and distal ends and a lumen extending therebetween, wherein the proximal end of the prosthetic branch is secured around an aperture formed in a side surface of the prosthetic trunk; and
a support structure coupled to the prosthetic branch,
wherein the support structure extends less than 360 degrees circumferentially in a deployed state,
wherein the support structure comprises undulations that are transverse to a longitudinal axis of the prosthetic branch and the amplitude of the undulations increases in a direction from the proximal end towards the distal end of the prosthetic branch.
11. The endoluminal prosthesis of claim 10 , wherein a proximal end of the support structure comprises a first width, and a distal end of the support structure comprises a second width, wherein the first width is less than the second width.
12. The endoluminal prosthesis of claim 10 , wherein the support structure comprises a deployed state having a concave shape relative to the prosthetic trunk.
13. The endoluminal prosthesis of claim 10 , wherein the support structure comprises boundaries forming a pattern that corresponds to a shape of the aperture in the prosthetic trunk.
14. The endoluminal prosthesis of claim 10 , wherein the aperture formed in the prosthetic trunk comprises an outer perimeter, wherein in an expanded state the support structure is positioned above the aperture in a manner radially outside of the aperture and within axial boundaries formed by the outer perimeter of the aperture.
15. The endoluminal prosthesis of claim 10 , further comprising a coil coupled to the prosthetic branch and disposed distally of the support structure.
16. The endoluminal prosthesis of claim 10 , further comprising a z-stent coupled to the prosthetic branch and disposed distally of the support structure.
17. The endoluminal prosthesis of claim 10 , wherein the support structure lacks an attachment to the prosthetic trunk.