Selective adherence of stent-graft coverings

Patent metadata

Field	Value
Publication number	US-9492269-B2
Application number	US-201414310527-A
Country	US
Kind code	B2
Filing date	Jun 20, 2014
Priority date	Sep 30, 1998
Publication date	Nov 15, 2016
Grant date	Nov 15, 2016

Abstract

An endoluminal prosthesis including a radially expandable support member having interior and exterior surfaces and a wall with openings, a first covering member including a biocompatible polymer material at least partially positioned against the interior surface, and a second covering member including a biocompatible polymer material at least partially positioned against the exterior surface. The first covering member attaches to the second covering member at predetermined bonding locations within less than all of the openings thereby leaving unbonded regions.

First claim

What is claimed is:

1. An endoluminal prosthesis comprising:
a radially expandable support member comprising interior and exterior surfaces and having a wall with openings, wherein the support member has two end portions and a middle portion arranged along a longitudinal axis;
a first covering member comprising a biocompatible polymer material at least partially positioned against the interior surface; and
a second covering member comprising a biocompatible polymer material at least partially positioned against the exterior surface wherein the second covering member covers all of the openings in at least the middle portion,
wherein
the first covering member attaches to the second covering member at predetermined bonding locations within less than all of the openings covered by the first and second covering members thereby leaving unbonded regions.

2. The endoluminal prosthesis of claim 1 wherein the support member and the first and second covering members have a tubular configuration.

3. The endoluminal prosthesis of claim 2 wherein first and second covering member lengths are equal to a support member length.

4. The endoluminal prosthesis of claim 3 wherein at least one unbonded region contains a drug.

5. The endoluminal prosthesis of claim 4 wherein the support member is composed of a self-expanding stent.

6. The endoluminal prosthesis of claim 5 wherein the biocompatible polymer material of the first or second covering member comprises expanded polytetrafluoroethylene.

7. The endoluminal prosthesis of claim 6 wherein the support member has a first diameter greater than a second diameter, wherein the first covering member attaches to the second covering member at the first diameter.

8. The endoluminal prosthesis of claim 2 wherein first and second covering member lengths are less than the support member length.

9. The endoluminal prosthesis of claim 1 wherein the predetermined bonding locations comprise an adhesive.

10. The endoluminal prosthesis of claim 9 wherein the adhesive is any one or any combination of polytetrafluoroethylene aqueous dispersions, polytetrafluoroethylene tapes, fluoroethylpolypropylenes (FEPs), tetrafluoroethylenes, polyurethanes, polyamides, polyimides or silicones.

11. The endoluminal prosthesis of claim 1 wherein the predetermined bonding locations comprise a thermoplastic polymer.

12. The endoluminal prosthesis of claim 11 wherein the thermoplastic polymer is any one or any combination of polyethylenes, polypropylenes, polyurethanes, or polyethylene terephthalates.

13. The endoluminal prosthesis of claim 1 wherein heat forms the bonding locations.

Assignees

• Bard Peripheral Vascular Inc

Inventors

• Edwin Tarun J
• Randall Scott L
• Mccrea Brendan
• Banas Christopher E

Classifications

• A61F2240/001

  Designing or manufacturing processes · CPC title

• B29L2031/753

  Medical equipment; Accessories therefor (bloodbags, medical bags B29L2031/7148; artificial eyes B29L2011/0008) · CPC title

• B29C65/02

  by heating, with or without pressure · CPC title

• B29C65/48

  using adhesives {, i.e. using supplementary joining material; solvent bonding} · CPC title

• A61F2/91

  made from perforated sheets or tubes, e.g. perforated by laser cuts or etched holes · CPC title