APPARATUS AND METHODS FOR DEPLOYMENT OF A MODULAR STENT-GRAFT SYSTEM

• US 20100312326A1
• Filed: 07/22/2010
• Published: 12/09/2010
• Est. Priority Date: 12/26/2007
• Status: Active Grant

• Current Assignee: Cook Medical Technologies, LLC (Cook Group Incorporated)
• Original Assignee: Cook Incorporated (Cook Group Incorporated), MED Institute, Inc. (Cook Group Incorporated)
• Inventors: Charlebois, Steven J., Roeder, Blayne A., Chuter, Timothy A.M.
• Granted Patent: US 8,992,593 B2
• Time in Patent Office: Days
• US Class Current: 623/1.13
• CPC Class Codes: A61F 2/07 Stent-grafts
• CPC Class Codes: A61F 2/856 Single tubular stent with a side portal passage
• CPC Class Codes: A61F 2/86 Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure
• CPC Class Codes: A61F 2/89 the wire-like elements comprising two or more adjacent rings flexibly connected by separate members
• CPC Class Codes: A61F 2/915 with bands having a meander structure, adjacent bands being connected to each other
• CPC Class Codes: A61F 2002/065 Y-shaped blood vessels
• CPC Class Codes: A61F 2002/075 the stent being loosely attached to the graft material, e.g. by stitching
• CPC Class Codes: A61F 2002/828 Means for connecting a plurality of stents allowing flexibility of the whole structure
• CPC Class Codes: A61F 2002/8486 provided on at least one of the ends
• CPC Class Codes: A61F 2002/91516 the meander having a change in frequency along the band
• CPC Class Codes: A61F 2210/0076 multilayered, e.g. laminated structures
• CPC Class Codes: A61F 2220/0016 with sharp anchoring protrusions, e.g. barbs, pins, spikes
• CPC Class Codes: A61F 2230/0013 Horseshoe-shaped, e.g. crescent-shaped, C-shaped, U-shaped
• CPC Class Codes: A61F 2230/005 Rosette-shaped, e.g. star-shaped
• CPC Class Codes: A61F 2230/0054 V-shaped
• CPC Class Codes: A61F 2230/0067 conical
• CPC Class Codes: A61F 2250/006 modular

Abstract

The present invention provides apparatus and methods for deployment of a modular stent-graft system. In one embodiment, a prosthesis comprises a first tubular graft comprising a layer of graft material, at least one lumen extending longitudinally therein, and a first fenestration extending through the layer of graft material. A layer of fenestration covering material attaches to the layer of graft material. The layer of fenestration covering material is disposed in the lumen of the first tubular graft and partitions the first fenestration from the lumen of the first tubular graft. A first non-stented opening is disposed proximal to the first fenestration and communicates with the first fenestration between the layer of graft material and the fenestration covering material. In use, a proximal end of a second tubular graft sealably engages the first non-stented opening, and the second tubular graft further extends through the first fenestration and into a branch vessel.

Claims

1. A prosthesis comprising:

a first tubular graft comprising a layer of graft material, at least one lumen extending longitudinally therein, and a first fenestration extending through the layer of graft material;

a layer of fenestration covering material attached to the layer of graft material, wherein the layer of fenestration covering material is disposed in the lumen of the first tubular graft and partitions the first fenestration from the lumen of the first tubular graft;

a first non-stented opening disposed proximal to the first fenestration and communicating with the first fenestration between the layer of graft material and the fenestration covering material; and

a second tubular graft comprising proximal and distal ends and a lumen extending longitudinally therebetween,

where the second tubular graft sealably engages the first non-stented opening, and the second tubular graft further extends distally through the first fenestration and into a branch vessel.

2. The prosthesis of claim 1, where the first non-stented opening is disposed about even with a proximal end of the first tubular graft.

3. The prosthesis of claim 1, where the first non-stented opening comprises a perimeter formed by a combination of the layer of graft material and the fenestration covering material, wherein less than half of the perimeter of the first non-stented opening is formed by the layer of graft material.

4. The prosthesis of claim 1, where the first non-stented opening comprises a perimeter formed by a combination of the layer of graft material and the fenestration covering material, wherein less than half of the perimeter of the first non-stented opening is formed by the fenestration covering material.

5. The prosthesis of claim 1 further comprising a second fenestration and a second non-stented opening disposed proximal to the second fenestration, wherein the fenestration covering material further partitions the second fenestration from the lumen of the first tubular graft, and wherein the second non-stented opening communicates with the second fenestration between the layer of graft material and the fenestration covering material.

6. The prosthesis of claim 5, where the first and second non-stented openings are positioned between about 130 and about 230 degrees apart from one another around a circumference of the layer of graft material.

7. The prosthesis of claim 1, further comprising at least one stent coupled to the layer of graft material, wherein the first fenestration is formed beneath an apex of at least one of the stents.

8. The prosthesis of claim 1, where the first non-stented opening comprises a substantially circular or elliptical shape.

9. The prosthesis of claim 1, where the second tubular graft further comprises first and second stents disposed at the proximal and distal ends, respectively.

10. A prosthesis comprising:

a first tubular graft comprising a layer of graft material, at least one lumen extending longitudinally therein, and a plurality of fenestrations extending through the layer of graft material;

a layer of fenestration covering material attached to the layer of graft material, wherein the layer of fenestration covering material is disposed in the lumen of the first tubular graft and partitions the plurality of fenestrations from the lumen of the first tubular graft;

a first non-stented opening disposed proximal to the plurality of fenestrations and communicating with at least one of the plurality of fenestrations between the layer of graft material and the fenestration covering material; and

a second tubular graft comprising proximal end and distal ends and a lumen extending longitudinally therebetween,

where the second tubular graft sealably engages the first non-stented opening, and the second tubular graft further extends distally through one of the plurality of fenestrations and into a branch vessel.

11. The prosthesis of claim 10, where the layer of fenestration covering material comprises a distal segment that is flared relative to a proximal segment.

12. The prosthesis of claim 11, where the flared distal segment generally surrounds the plurality of fenestrations extending through the layer of the graft material.

13. The prosthesis of claim 10, where the first non-stented opening is disposed about even with a proximal end of the first tubular graft.

14. The prosthesis of claim 10, where the first non-stented opening comprises a perimeter formed by a combination of the layer of graft material and the fenestration covering material, wherein less than half of the perimeter of the first non-stented opening is formed by the layer of graft material.

15. The prosthesis of claim 10, where the first non-stented opening comprises a perimeter formed by a combination of the layer of graft material and the fenestration covering material, wherein less than half of the perimeter of the first non-stented opening is formed by the fenestration covering material.

16. A prosthesis comprising:

a first tubular graft comprising a layer of graft material, at least one lumen extending longitudinally therein, and a first fenestration extending through the layer of graft material;

a layer of fenestration covering material attached to the layer of graft material, wherein the layer of fenestration covering material is disposed in the lumen of the first tubular graft and partitions the first fenestration from the lumen of the first tubular graft;

a first non-stented opening disposed proximal to the first fenestration and communicating with the first fenestration between the layer of graft material and the fenestration covering material;

a second non-stented opening disposed proximal to a second fenestration, wherein the fenestration covering material further partitions the second fenestration from the lumen of the first tubular graft, and wherein the second non-stented opening communicates with the second fenestration between the layer of graft material and the fenestration covering material;

a second tubular graft comprising proximal and distal ends, wherein the second tubular graft sealably engages the first non-stented opening, and the second tubular graft further extends distally through the first fenestration and into a first branch vessel; and

a third tubular graft comprising proximal and distal ends, wherein the third tubular graft sealably engages the second non-stented opening, and the third tubular graft further extends distally through the second fenestration and into a second branch vessel.

17. The prosthesis of claim 16, where the first and second fenestrations are positioned between about 130 and about 230 degrees apart from one another around a circumference of the layer of graft material.

18. The prosthesis of claim 16, where the first non-stented opening comprises a perimeter formed by a combination of the layer of graft material and the fenestration covering material, wherein less than half of the perimeter of the first non-stented opening is formed by the layer of graft material.

19. The prosthesis of claim 16, where the first non-stented opening comprises a perimeter formed by a combination of the layer of graft material and the fenestration covering material, wherein less than half of the perimeter of the first non-stented opening is formed by the fenestration covering material.

20. The prosthesis of claim 16, where the first fenestration comprises a substantially circular or elliptical shape.