Secured strand end devices

• US 8,966,733 B2
• Filed: 05/28/2014
• Issued: 03/03/2015
• Est. Priority Date: 10/22/2006
• Status: Active Grant

• Current Assignee: Idev Technologies, Inc. (Abbott Laboratories Incorporated)
• Original Assignee: Idev Technologies, Inc. (Abbott Laboratories Incorporated)
• Inventors: Sheldon, Jeffery, Booth, Richard, Bueche, Kenneth M.
• Primary Examiner(s): Bryant, David
• Assistant Examiner(s): YOO, JUN S
• Application Number:
  US14/289,519
• Publication Number:
  US 20140277329A1
• Time in Patent Office: 279 Days
• Field of Search: 294/39, 294/33, 294/37, 294/50, 623/1.11, 623/1.12, 623/1.15, 623/1.2, 623/1.22, 623/1.51, 623/1.53
• US Class Current: 29/439
• 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 method of forming a self-expanding stent, the method comprising:

bending each of a multiple number of strands to yield first strand bends and strand portions on both sides of each said first strand bend, each of the strand portions having an end;

weaving the strand portions, wherein weaving comprises bending to yield second strand bends and back braiding some of the strand portion ends by at least two strand crossings; and

securing each of a multiple number of coupling structures to one pair of said strand portion ends, the pair of said strand portion ends including two strand portion ends of two different strands or the same strand, the number of coupling structures equal to the number of strands, the coupling structures being different than the strands, wherein securing comprises aligning the pairs of strand portion ends end-to-end.

2. The method of claim 1, further comprising heat treating the stent before back braiding.

3. The method of claim 1, further comprising heat treating the stent after back braiding.

4. The method of claim 1, wherein weaving the strand portions comprises machine weaving.

5. The method of claim 1, wherein back braiding some of the strand portion ends comprises hand weaving.

6. The method of claim 1, wherein securing comprises welding the strand ends to the coupling structures.

7. The method of claim 1, further comprising, after weaving, trimming the strand portions.