Electrospun patterned stent graft covering

• US 9,175,427 B2
• Filed: 11/14/2011
• Issued: 11/03/2015
• Est. Priority Date: 11/14/2011
• Status: Active Grant

• Current Assignee: Cook Medical Technologies, LLC (Cook Group Incorporated)
• Original Assignee: Cook Medical Technologies, LLC (Cook Group Incorporated)
• Inventors: Haselby, Kenneth A., Milner, Keith R., Sherman, Sara M., Kim, Seoggwan, Swift, Richard A.
• Primary Examiner(s): Watkins, III, William P
• Application Number:
  US13/295,589
• Publication Number:
  US 20130122248A1
• Time in Patent Office: 1,450 Days
• Field of Search: 428/131
• US Class Current: 1/1
• CPC Class Codes: A61F 2/07 Stent-grafts
• CPC Class Codes: A61F 2250/0001 Means for transferring electromagnetic energy to implants
• CPC Class Codes: D01D 5/0076 characterised by the collecting device, e.g. drum, wheel, endless belt, plate or grid D01D5/0046 takes precedence
• CPC Class Codes: D04H 1/728 by electro-spinning electro-spinning methods and apparatus D01D5/0007
• CPC Class Codes: Y10T 428/24273 including aperture

Abstract

An endoluminal prosthesis and systems and methods for making the prosthesis are provided. In one example, a patterned graft material for a prosthesis includes a network of electrospun fibers. The network of electrospun fibers may include a plurality of continuous electrospun fibers. The fibers may be collected on a collector plate using an electrospinning process to form the network of fibers. The patterned graft material also may include a plurality of openings in the network of electrospun fibers. The plurality of openings may be arranged in a pattern. The network of electrospun fibers may include a plurality of edges, each surrounding a corresponding one of the plurality of openings. Each of the plurality of edges may include at least one electrospun fiber of the network of electrospun fibers. A majority of the electrospun fibers of the plurality of edges may be continuous at the edges.

Claims

1. A patterned graft material comprising:

a network of electrospun fibers comprising a plurality of continuous electrospun fibers; and

a plurality of openings in the network of electrospun fibers, the plurality of openings arranged in a pattern;

wherein the network of electrospun fibers comprises a plurality of edges each surrounding a corresponding one of the plurality of openings and including at least one electrospun fiber of the network of electrospun fibers, and a majority of the electrospun fibers of the plurality of edges are continuous at the edges, and

wherein the network of fibers do not cross the plurality of openings.

2. The patterned graft material of claim 1, wherein the patterned graft material has a determined porosity, the porosity determined by a size of the openings in the network of electrospun fibers.

3. The patterned graft material of claim 1, wherein the patterned graft material has a determined porosity, the porosity determined by a number of openings in the network of electrospun fibers.

4. The patterned graft material of claim 1, wherein the patterned graft material has a determined porosity, the porosity determined by the pattern of the plurality of openings in the network of electrospun fibers.

5. The patterned graft material of claim 1, further comprising at least a first region and a second region, the first region having a first determined porosity and the second region having a second determined porosity different from the first determined porosity.

6. The patterned graft material of claim 5, wherein the first and second regions are positioned adjacent to one another along a length of the patterned graft material.

7. The patterned graft material of claim 5, wherein at least one of the first and second regions is substantially nonporous.

8. The patterned graft material of claim 1, wherein the edge surrounding each of the plurality of openings is substantially free of severed fibers and melted fibers.