Secured strand end devices

• US 8,419,788 B2
• Filed: 07/13/2012
• Issued: 04/16/2013
• Est. Priority Date: 10/22/2006
• Status: Active Grant

• Current Assignee: Idev Technologies, Inc. (Abbott Laboratories)
• Original Assignee: Idev Technologies, Inc. (Abbott Laboratories)
• Inventors: Sheldon, Jeffery, Booth, Richard, Bueche, Ken
• Primary Examiner(s): Isabella, David
• Assistant Examiner(s): Woznicki, Jacqueline
• Application Number:
  US13/549,373
• Publication Number:
  US 20120283818A1
• Time in Patent Office: 277 Days
• Field of Search: 623/1.18, 623/1.53
• US Class Current: 623/1.53
• CPC Class Codes: A46D 1/0207 Bristles characterised by the choice of material, e.g. metal
• CPC Class Codes: A61F 2/06 Blood vessels
• CPC Class Codes: A61F 2/844 folded prior to deployment
• 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 2/885 comprising a coil including a plurality of spiral or helical sections with alternate directions around a central axis
• CPC Class Codes: A61F 2/90 characterised by a net-like or mesh-like structure
• CPC Class Codes: A61F 2/91 made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes
• CPC Class Codes: A61F 2/915 with bands having a meander structure, adjacent bands being connected to each other
• CPC Class Codes: A61F 2/95 Instruments specially adapted for placement or removal of stents or stent-grafts
• CPC Class Codes: A61F 2/966 with relative longitudinal movement between outer sleeve and prosthesis, e.g. using a push rod
• CPC Class Codes: A61F 2002/061 provided with means for allowing access to secondary lumens
• CPC Class Codes: A61F 2002/91591 Locking connectors, e.g. using male-female connections
• CPC Class Codes: A61F 2002/9534 for repositioning of stents
• CPC Class Codes: A61F 2002/9665 with additional retaining means
• CPC Class Codes: A61F 2210/0014 using shape memory or superelastic materials, e.g. nitinol
• CPC Class Codes: A61F 2220/0058 soldered or brazed or welded
• CPC Class Codes: B23K 2101/32 Wires
• CPC Class Codes: B23K 2103/14 Titanium or alloys thereof
• CPC Class Codes: B23K 26/20 Bonding soldering by means of radiant energy B23K1/005; joining of preformed plastics parts by heating using laser beam B29C65/16
• CPC Class Codes: B23K 26/244 Overlap seam welding
• CPC Class Codes: D03D 3/02 : Tubular fabrics
• CPC Class Codes: D04C 1/06 : Braid or lace serving particular purposes
• CPC Class Codes: D06C 7/00 : Heating or cooling textile fabrics
• CPC Class Codes: D10B 2509/00 : Medical; Hygiene
• CPC Class Codes: D10B 2509/06 : Vascular grafts; stents
• CPC Class Codes: Y10T 29/49849 : by wrapping around

Abstract

A woven, self-expanding stent device has one or more strands and is configured for insertion into an anatomical structure. The device includes a coupling structure secured to two different strand end portions that are substantially aligned with each other. The two different strand end portions include nickel and titanium. The coupling structure is not a strand of the device.

Claims

1. A stent comprising:

a multiple number of strands each including a strand portion on both sides of a first strand bend, each of the strand portions having an end, the strand portions being woven to define a stent body having a plurality of strand intersections between a first stent body end and a second stent body end, one said strand portion crossing one other said strand portion at each of said strand intersections, the first strand bends defining the first stent body end, some of the strand portions including a second strand bend and being back braided towards the first stent body end, the second strand bends defining the second stent body end, the strand portion ends disposed proximate to the second stent body end; and

a multiple number of tubular coupling structures, the number of coupling structures equal to the number of strands, the coupling structures being different than the strands, each of the coupling structures secured to two of said strand portion ends by welding, the coupling structures being axially aligned with each other along an axial direction of the stent, and at least one crossing strand crossing over each of the coupling structures at a position radially outward from the coupling structure.

2. The stent of claim 1, wherein welding comprises forming a first welded region and a second welded region, the first welded region spaced apart from the second welded region along a length of the coupling structure.

3. The stent of claim 1, wherein the coupling structures are spaced from the second stent body end by at least two strand crossings.

4. The stent of claim 1, wherein each of the coupling structures includes a passageway having a diameter sized to receive one said strand.

5. The stent of claim 1, wherein the strand portion ends secured by each of the coupling structures are aligned end end-to-end.

6. The stent of claim 5, wherein the strand portion ends secured by each of the coupling structures are spaced apart from each other.

7. The stent of claim 1, wherein a diameter of the stent is between about 4 mm and about 10 mm.

8. The stent of claim 1, wherein a length of the stent is between about 40 mm and about 150 mm.

9. The stent of claim 1, wherein each of the strands is a round wire.

10. The stent of claim 1, wherein each of the strands has a diameter between about 0.006 inches and about 0.008 inches.

11. The stent of claim 1, wherein the strands comprise nitinol.

12. The stent of claim 1, wherein the coupling structures comprise nitinol.

13. The stent of claim 1, wherein the strands and the coupling structures comprise the same material.

14. The stent of claim 1, wherein the multiple number of strands includes six strands.

15. The stent of claim 1, wherein each of the coupling structures is substantially centered radially inward of the crossing strand crossing that coupling structure.

16. The stent of claim 1, wherein the coupling structures are spaced from the second stent body end by at least three strand crossings.

17. The stent of claim 1, wherein the coupling structures are spaced from the second stent body end by at least four strand crossings.