STENT AND METHOD OF FORMING A STENT WITH INTEGRAL BARBS

• US 20120222969A1
• Filed: 05/14/2012
• Published: 09/06/2012
• Est. Priority Date: 05/16/2002
• Status: Abandoned Application

• Current Assignee: Cook Medical Technologies, LLC (Cook Group Incorporated)
• Original Assignee: Cook Incorporated (Cook Group Incorporated)
• Inventors: Osborne, Thomas A., Mead, Jason A.
• Application Number:
  US13/471,066
• Publication Number:
  US 20120222969A1
• Time in Patent Office: Days
• US Class Current: 205/661
• CPC Class Codes: A61F 2/07 Stent-grafts
• CPC Class Codes: A61F 2/2418 Scaffolds therefor, e.g. support stents
• CPC Class Codes: A61F 2/2475 Venous valves
• CPC Class Codes: A61F 2/848 having means for fixation to the vessel wall, e.g. barbs
• 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 2/90 characterised by a net-like or mesh-like structure
• CPC Class Codes: A61F 2/915 with bands having a meander structure, adjacent bands being connected to each other
• CPC Class Codes: A61F 2002/075 the stent being loosely attached to the graft material, e.g. by stitching
• CPC Class Codes: A61F 2002/8483 Barbs
• CPC Class Codes: A61F 2220/0008 Fixation appliances for connecting prostheses to the body
• CPC Class Codes: A61F 2220/0016 with sharp anchoring protrusions, e.g. barbs, pins, spikes
• CPC Class Codes: A61F 2220/005 using adhesives
• CPC Class Codes: A61F 2220/0058 soldered or brazed or welded
• CPC Class Codes: A61F 2220/0075 sutured, ligatured or stitched, retained or tied with a rope, string, thread, wire or cable
• CPC Class Codes: A61F 2230/001 Figure-8-shaped, e.g. hourglass-shaped
• CPC Class Codes: A61F 2230/0023 triangular
• CPC Class Codes: A61F 2230/0026 trapezoidal
• CPC Class Codes: A61F 2230/0054 V-shaped
• CPC Class Codes: A61F 2230/0058 X-shaped
• CPC Class Codes: A61F 2230/0067 conical
• CPC Class Codes: A61F 2230/0091 : helically-coiled or spirally-coiled, i.e. having a 2-D spiral cross-section
• CPC Class Codes: A61F 2230/0095 : Saddle-shaped
• CPC Class Codes: C25F 3/24 : of iron or steel

Abstract

A method for manufacturing a barbed stent includes providing a sheet of stent material, cutting the sheet to form a stent wire with integral barbs extending therefrom, and forming the stent wire into a final stent shape having a longitudinal axis. A stent for deployment within the body of a patient includes integral barbs.

Claims

1. A method of manufacturing a barbed stent, comprising:

providing a stent material;

cutting the stent material to form a stent segment with at least one integral barb extending therefrom;

orienting the at least one integral barb in a first direction; and

bending the stent segment in a second direction, transverse to the first direction, to form at least one bend connected to two struts.

2. The method of claim 1, where the stent material comprises a sheet.

3. The method of claim 1, where the stent material comprises a cannula.

4. The method of claim 1, where the stent material comprises a wire.

5. The method of claim 1, further comprising polishing the stent segment.

6. The method of claim 5, further comprising electropolishing the stent segment.

7. The method of claim 1, wherein the cutting is performed with a laser.

8. A method of manufacturing a barbed stent, comprising:

providing a stent segment having at least one barb;

bending the stent segment to form at least one bend connected to two struts, the stent segment comprising a longitudinal axis; and

prior to the bending, orienting the at least one barb so as to point in a direction transverse to the longitudinal axis of the stent segment after bending.

9. The method of claim 8, wherein bending comprises bending the stent segment into a zigzag shape.

10. The method of claim 9, wherein bending comprises bending the stent segment into a zigzag shape having alternating struts and bends, so that at least one of the barbs is integral with at least every other strut.

11. The method of claim 9, wherein bending comprises bending the stent segment into a zigzag shape having alternating struts and bends, so that at least one of the barbs is integral with at least every other strut.

12. A method of manufacturing a barbed stent, comprising:

providing a wire having at least one barb;

bending the wire to form a stent segment comprising at least one bend connected to two struts, the stent segment comprising a longitudinal axis; and

prior to the bending, orienting the at least one barb so as to point in a direction transverse to the longitudinal axis of the stent segment after bending.

13. The method of claim 12, wherein bending comprises bending the stent segment into a zigzag shape.

14. The method of claim 13, wherein bending comprises bending the stent segment into a zigzag shape having alternating struts and bends, so that at least one of the barbs is integral with at least every other strut.

15. The method of claim 13, wherein bending comprises bending the stent segment into a zigzag shape having alternating struts and bends, so that at least one of the barbs is integral with at least every other strut.