Intraluminal stent and graft

• US 20050131529A1
• Filed: 01/31/2005
• Published: 06/16/2005
• Est. Priority Date: 02/21/1992
• Status: Active Grant

• Current Assignee: Lifeport Sciences LLC (Acacia Research Corporation)
• Original Assignee: Andrew H. Cragg
• Inventors: Cragg, Andrew H.
• Granted Patent: US 7,534,256 B2
• Time in Patent Office: Days
• US Class Current: 623/1.150
• 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

An 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. A stent comprising a tubular member having hoops aligned along the axis of said tubular member, each of said hoops comprising a series of sinusoidal or zig-zag elements including apices alternatingly pointing in opposite directions along the axis of the stent with at least one apex of one hoop adjoining an oppositely pointed apex of an adjacent hoop and being connected there by a connecting member.

2. A stent according to claim 1, wherein said tubular member is made from a shape memory alloy.

3. A stent according to claim 2, wherein said shape memory alloy is nitinol.

4. A stent according to claim 1, wherein said connecting member is a suture material.

5. A stent according to claim 4, wherein said suture material is a polypropylene.

6. A stent according to claim 1, wherein some of said apices of one hoop adjoin an oppositely pointed apex of an adjacent hoop and are connected thereto.

7. A stent according to claim 1, wherein all said apices of one hoop adjoin oppositely pointed apices of an adjacent hoop and are connected thereto.

8. A stent according to claim 1, further comprising a tubular graft member secured to said tubular member with at least one said connecting member.

9. A stent according to claim 8, wherein said graft member lies within said tubular member.