Intraluminal stent

• US 5,665,115 A
• Filed: 06/07/1995
• Issued: 09/09/1997
• Est. Priority Date: 02/21/1992
• Status: Expired due to Term

• Current Assignee: Lifeport Sciences LLC (Acacia Research Corporation)
• Original Assignee: Boston Scientific Technology Incorporated (Boston Scientific Corporation)
• Inventors: Cragg, Andrew H.
• Primary Examiner(s): Polutta, Mark O.
• Application Number:
  US08/477,076
• Time in Patent Office: 825 Days
• Field of Search: 606/108, 606/191, 606/192, 606/199, 606/195, 623/1, 623/11, 623/12
• US Class Current: 623/1.13
• CPC Class Codes: A61F 2/07 Stent-grafts
• CPC Class Codes: A61F 2/88 the wire-like elements formed as helical or spiral coils forming a net-like or mesh-like structure A61F2/90
• CPC Class Codes: A61F 2/90 characterised by a net-like or mesh-like structure
• 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 2002/075 the stent being loosely attached to the graft material, e.g. by stitching
• CPC Class Codes: A61F 2002/30092 using shape memory or superelastic materials, e.g. nitinol
• CPC Class Codes: A61F 2002/30462 retained or tied with a rope, string, thread, wire or cable
• CPC Class Codes: A61F 2210/0019 operated at only one temperature whilst inside or touching the human body, e.g. constrained in a non-operative shape during surgery, another temperature only occurring before the operation
• CPC Class Codes: A61F 2220/0066 stapled
• 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 2310/00017 Iron- or Fe-based alloys, e.g. stainless steel
• CPC Class Codes: A61F 2310/00023 Titanium or titanium-based alloys, e.g. Ti-Ni alloys
• CPC Class Codes: A61F 2310/00131 Tantalum or Ta-based alloys
• CPC Class Codes: A61L 2400/16 Materials with shape-memory or superelastic properties
• CPC Class Codes: A61L 31/06 obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds A61L31/041 takes precedence
• CPC Class Codes: C08L 67/00 Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain of polyester-amides C08L77/12; of polyester-imides C08L79/08; Compositions of derivatives of such polymers

Abstract

A intraluminal stent and graft includes a stent made of a continuous helix of zig-zag wire and loops which connect adjacent apices of the wire. The stent is compressible and self-expandable substantially to a pre-compressed configuration. The device also includes a graft secured to the stent and made of a suitable biocompatible material.

Claims

1. An intraluminal stent comprising a predetermined length of elastic wire having a zig-zag configuration and defining a series of axially displaced hoop members, each hoop member comprising a successive series of zig-zags with apices, the apices of axially oppositely disposed zig-zags in adjacent hoop members abutting one another and at least some of the abutting apices connected by a loop member which is not part of said elastic wire forming said zig-zag hoop members.

2. A stent, as recited in claim 1, wherein said loop member is a staple.

3. A stent, as recited in claim 1, wherein said loop member is a metal ring.

4. A stent, as recited in claim 1, wherein said loop member is a plastic ring.

5. A stent, as recited in claim 1, wherein said loop member consists of the same material of construction as the hoops but is separate therefrom.

6. A stent, as recited in claim 5, wherein both said loop members and said hoops consist of nitinol.

7. An intraluminal stent, as recited in claim 1, wherein said loop member is a ligature of suture material.

8. An intraluminal stent as claimed in claim 1 wherein said wire is continuous.

9. An intraluminal stent of claim 1 further comprising at least one loop member for securing abutting hoop members to one another.

10. An intraluminal stent, as recited in claim 9, wherein said loop member is ligature of suture material.

11. An intraluminal stent of claim 9 wherein said loop member consists of the same material of construction as the hoops but is separate therefrom.

12. An intraluminal stent of claim 9 wherein said loop members and hoops consist of nitinol.

13. An intraluminal stent of claim 9 wherein at least one loop member is not part of said elastic wire forming said zigzag hoop members.

14. An intraluminal stent having a zig-zag configuration and defining a series of axially displaced hoop members, each hoop member comprising a successive series of zig-zags with apices, the apices of axially oppositely disposed zig-zags in adjacent hoop members abutting one another and at least some of the abutting apices connected to one another by a separate connecting member, wherein said stent is compressible and expandable substantially to a pre-compressed configuration.

15. An intraluminal stent of claim 14 further comprising a staple for securing abutting hoop members to one another.

16. An intraluminal stent of claim 14 further comprising a metal ring for securing abutting hoop members to one another.

17. An intraluminal stent of claim 14 further comprising a plastic ring for securing abutting hoop members to one another.

18. An intraluminal stent as claimed in claim 14 wherein said hoop members are continuous with one another.