SYSTEMS AND METHODS FOR MAINTAINING PERFUSION OF BRANCH VESSELS

• US 20140257453A1
• Filed: 03/11/2013
• Published: 09/11/2014
• Est. Priority Date: 03/11/2013
• Status: Active Grant

• Current Assignee: Cook Medical Incorporated (Cook Group Incorporated)
• Original Assignee: Cook Medical Incorporated (Cook Group Incorporated)
• Inventors: Roeder, Blayne A.
• Granted Patent: US 9,808,364 B2
• Time in Patent Office: Days
• US Class Current: 623/1.11
• CPC Class Codes: A61F 2/07 Stent-grafts
• CPC Class Codes: A61F 2/2418 Scaffolds therefor, e.g. support stents
• CPC Class Codes: A61F 2/82 Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents stent-grafts for tubular structures of the body other than blood vessels A61F2/04; stent-grafts for blood vessels A61F2/07; instruments specially adapted for placement or removal of stents or stent-grafts A61F2/95; for closing wounds, or holding wounds closed A61B17/04 - A61B17/115; dilators A61M29/00
• CPC Class Codes: A61F 2/844 folded prior to deployment
• CPC Class Codes: A61F 2/856 Single tubular stent with a side portal passage
• CPC Class Codes: A61F 2/954 for placing stents or stent-grafts in a bifurcation
• CPC Class Codes: A61F 2002/061 provided with means for allowing access to secondary lumens
• CPC Class Codes: A61F 2002/067 modular
• CPC Class Codes: A61F 2002/9511 the retaining means being filaments or wires

Abstract

An endoluminal prosthesis comprises a graft having a tubular body comprising proximal and distal ends, inner and outer surfaces, and partially and fully deployed states. A temporary channel is disposed external to the outer surface of the graft in the partially deployed state. The temporary channel begins at one of the proximal and distal ends of the graft, and extends along only a portion of a longitudinal length of the graft. The temporary channel is removed when the graft is in a fully deployed state.

Claims

1. An endoluminal prosthesis comprising:

a graft having a tubular body comprising proximal and distal ends, inner and outer surfaces, and partially and fully deployed states; and

a temporary channel disposed external to the outer surface of the graft in the partially deployed state, the temporary channel beginning at one of the proximal and distal ends of the graft, and extending along only a portion of a longitudinal length of the graft, wherein the temporary channel is removed when the graft is in the fully deployed state.

2. The prosthesis of claim 1, wherein the temporary channel begins at the distal end of the graft and terminates before the proximal end of the graft.

3. The prosthesis of claim 2, further comprising at least one fenestration disposed in a sidewall of the graft between the proximal and distal ends of the graft, wherein a proximal end of the temporary channel is aligned with the fenestration.

4. The prosthesis of claim 1, wherein the temporary channel comprises a “

U”

-shape.

5. The prosthesis of claim 1 further comprising a valve replacement disposed between the proximal and distal ends of the graft.

6. The prosthesis of claim 1, wherein a shape of the temporary channel is maintained by securement of a first portion of the graft to a second portion of the graft.

7. The prosthesis of claim 6 wherein the first portion of the graft is secured to the second portion of the graft using at least one suture.

8. The prosthesis of claim 7 wherein the suture comprises a biodegradable material, and the temporary channel is removed upon degradation of the suture.

9. The prosthesis of claim 7 wherein the temporary channel is removed by breaking the suture using an external force.

10. The prosthesis of claim 1, wherein a shape of the temporary channel is maintained by securement of a portion of the graft to a delivery system.

11. The prosthesis of claim 10 further comprising a coupling member secured to the graft, and a wire extending along the delivery system, wherein the temporary channel is maintained when the wire is coupled to the coupling member of the graft, and wherein the temporary channel is removed when the wire is released from engagement with the graft.

12. The prosthesis of claim 1, wherein the temporary channel comprises a sheath having an aperture, wherein the aperture is disposed distal to the distal end of the graft in the partially deployed state, and a portion of the sheath is disposed adjacent to the outer surface of the graft in the partially deployed state.

13. The prosthesis of claim 1, wherein the temporary channel comprises a removable stent framework disposed exterior to the graft in the partially deployed state.

14. An endoluminal prosthesis comprising:

a graft having a tubular body comprising proximal and distal ends, inner and outer surfaces, and partially and fully deployed states;

a valve replacement disposed within at least a portion of the graft;

at least one fenestration disposed in a sidewall of the graft between the proximal and distal ends of the graft; and

a temporary channel disposed external to the outer surface of the graft in the partially deployed state, the temporary channel beginning at one of the proximal and distal ends of the graft, and extending along only a portion of a longitudinal length of the graft.

15. The prosthesis of claim 14, wherein the temporary channel is removed when the graft is in the fully deployed state.

16. The prosthesis of claim 14, wherein the temporary channel begins at the distal end of the graft, and wherein a proximal end of the temporary channel is aligned with the fenestration.

17. The prosthesis of claim 14, wherein the temporary channel comprises a “

U”

-shape.

18. The prosthesis of claim 14, wherein a shape of the temporary channel is maintained by securement of a first portion of the graft to a second portion of the graft.

19. The prosthesis of claim 14, wherein a shape of the temporary channel is maintained by securement of a portion of the graft to a delivery system.

20. A method for maintaining flow in a branch vessel, the method comprising:

partially deploying a graft in a main vessel;

maintaining a temporary channel external to an outer surface of the graft, the temporary channel beginning at one of the proximal and distal ends of the graft, and extending along only a portion of a longitudinal length of the graft;

allowing fluid to flow adjacent to the outer surface of the graft within the temporary channel and into a branch vessel; and

removing the temporary channel.