Stent having removable anchoring element

Patent metadata

Field	Value
Publication number	US-9265635-B2
Application number	US-201414197766-A
Country	US
Kind code	B2
Filing date	Mar 5, 2014
Priority date	Mar 14, 2013
Publication date	Feb 23, 2016
Grant date	Feb 23, 2016

Abstract

A stent comprising a radially expandable elongate tubular support structure, the elongate tubular support structure comprising an inner surface and an outer surface and an anchoring element disposed on at least a portion of the outer surface of the tubular support structure, the anchoring element is separate and removable from the elongate tubular support structure.

First claim

The invention claimed is:

1. A stent, the stent comprising:
a radially expandable elongate tubular support structure, the elongate tubular support structure comprising an inner surface and an outer surface; and
an anchoring element disposed on at least a portion of said outer surface of said tubular support structure, the anchoring element is separate and removable from said elongate tubular support structure, the tubular support structure comprising a braided, woven or knit structure, and the anchoring element is woven into and out of the braided, woven or knit structure such that the anchoring element enters, exits, and then re-enters adjacent fibers of the braided, woven or knit structure.

2. The stent of claim 1 wherein said anchoring element enters, exits, and then re-enters said braided, woven or knit structure in a longitudinal direction with the tubular support structure.

3. The stent of claim 1 wherein said stent comprises a partial or full covering.

4. The stent of claim 2 wherein said covering comprises silicone.

5. The stent of claim 2 wherein said stent covering is on the inner surface of the tubular support structure.

6. The stent of claim 1 wherein said anchoring element is in the form of a flat or a round wire.

7. The stent of claim 1 wherein said anchoring element is nitinol or stainless steel.

8. The stent of claim 6 wherein said anchoring element is a magnesium alloy.

9. The stent of claim 1 wherein said stent is an endoscopic stent.

10. The stent of claim 9 wherein said stent comprises a member selected from the group consisting of esophageal stents, pancreatic stents, duodenal stents, colonic stents, biliary stents and airway stents.

11. A stent, the stent comprising:
a radially expandable elongate tubular support structure, the elongate tubular support structure comprising a braided or woven open network of fibers or filaments;
an anchoring element woven into and out of said braided or woven open network such that the anchoring element enters, exits, and then re-enters adjacent fibers of said braided or woven open network, the anchoring element is separate and removable from said elongate tubular support structure.

12. The stent of claim 11 wherein said anchoring element enters, exits, and then re-enters said braided or open network in a longitudinal direction with the tubular support structure.

13. The stent of claim 11 wherein said anchoring element is in the form of a flat or round wire.

14. The stent of claim 13 wherein said anchoring element is a flat wire.

15. The stent of claim 13 wherein said anchoring element is nitinol or stainless steel.

16. The stent of claim 13 wherein said anchoring element is a magnesium alloy.

17. The stent of claim 11 further comprising a partial or full covering.

18. The stent of claim 11 wherein said stent is an endoscopic stent.

Assignees

• Boston Scient Scimed Inc

Inventors

• Walak Steven E

Classifications

• A61F2/848 Primary

  having means for fixation to the vessel wall, e.g. barbs · CPC title

• A61F2/04

  Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts (A61F2/18, A61F2/20 take precedence; instruments specially adapted for placement or removal of stents or stent-grafts A61F2/95) · CPC title

• A61F2230/0069

  cylindrical · CPC title

• A61F2/90 Primary

  characterised by a net-like or mesh-like structure · CPC title

• A61F2220/0008

  Fixation appliances for connecting prostheses to the body · CPC title