Bifurcated endoluminal prosthesis

• US 5,800,508 A
• Filed: 06/05/1995
• Issued: 09/01/1998
• Est. Priority Date: 02/09/1994
• Status: Expired due to Term

• Current Assignee: Lifeport Sciences LLC (Acacia Research Corporation)
• Original Assignee: Boston Scientific Technology Incorporated (Boston Scientific Corporation)
• Inventors: Hudson, John, Goicoechea, George, Mialhe, Claude
• Primary Examiner(s): Milano, Michael J.
• Application Number:
  US08/463,981
• Time in Patent Office: 1,184 Days
• Field of Search: 623/1, 623/11, 623/12, 606/194, 606/195, 600/36
• US Class Current: 623/1.15
• CPC Class Codes: A61F 2/07 Stent-grafts
• CPC Class Codes: A61F 2/82 Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents stent-grafts for tubular structures of the body other than blood vessels A61F2/04; stent-grafts for blood vessels A61F2/07; instruments specially adapted for placement or removal of stents or stent-grafts A61F2/95; for closing wounds, or holding wounds closed A61B17/04 - A61B17/115; dilators A61M29/00
• CPC Class Codes: A61F 2/852 Two or more distinct overlapping stents
• CPC Class Codes: A61F 2/90 characterised by a net-like or mesh-like structure
• CPC Class Codes: A61F 2/954 for placing stents or stent-grafts in a bifurcation
• CPC Class Codes: A61F 2/958 Inflatable balloons for placing stents or stent-grafts
• CPC Class Codes: A61F 2002/061 provided with means for allowing access to secondary lumens
• CPC Class Codes: A61F 2002/065 Y-shaped blood vessels
• CPC Class Codes: A61F 2002/075 the stent being loosely attached to the graft material, e.g. by stitching
• CPC Class Codes: A61F 2002/828 Means for connecting a plurality of stents allowing flexibility of the whole structure
• CPC Class Codes: A61F 2002/8486 provided on at least one of the ends
• 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 2220/0008 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 2220/0033 made by longitudinally pushing a protrusion into a complementary-shaped recess, e.g. held by friction fit
• 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 2230/0067 conical
• CPC Class Codes: A61F 2240/001 Designing or manufacturing processes
• CPC Class Codes: A61F 2250/0098 radio-opaque, e.g. radio-opaque markers
• CPC Class Codes: A61M 25/0662 : Guide tubes
• CPC Class Codes: Y10S 623/903 : Blood vessel
• CPC Class Codes: Y10T 29/49826 : Assembling or joining

Abstract

An introducer for delivering into the vasculature a straight or bifurcated stent or prosthesis; a method for delivering into the vasculature a straight or bifurcated stent or prosthesis; a method of treating and angeological disease using a bifurcated stent; an endoluminal stent having perpendicular hoop members, each hoop member formed of wire in a sinuous configuration, at least some of juxtaposed apices in neighboring hoops being secured to one another, such stents also forming axially aligned segments in straight stents, and segments of bifurcated stents in particular embodiments. Certain embodiments of such stents also include barbs, fabric covering and radiopaque markers.

Claims

1. An endoluminal stent comprising a plurality of hoops which are axially displaced in a tubular configuration along a common axis, each of said hoops

(a) having longitudinal ends,

(b) being formed by a substantially complete turn of a sinuous member having apices at said longitudinal ends, and

(c) having said apices at said longitudinal ends lie in planes perpendicular to said axis;

wherein apices of sinuous members of adjacent hoops are juxtaposed to one another, and at least two juxtaposed apices are connected to one another by a separate securing means that provides limited relative movement between said apices.

2. An endoluminal stent as claimed in claim 1 in combination with one or more additional stent segments, wherein each of said segments comprises a plurality of hoops which are axially displaced in a tubular configuration along a common axis, each of said hoops

(a) having longitudinal ends,

(b) being formed by a substantially complete turn of a sinuous member having apices at said longitudinal ends, and

(c) having said longitudinal ends lie in planes substantially perpendicular to said axis;

wherein apices of sinuous members of adjacent hoops are juxtaposed to one another, and at least two juxtaposed apices are connected by a securing means that provides limited relative movement between said apices.

3. An endoluminal stent as claimed in claim 2 wherein said one or more additional segments are axially aligned with one another.

4. An endoluminal stent as claimed in claim 2 wherein said one or more additional segments are connected to one another by securing means.

5. An endoluminal stent as claimed in claim 2 wherein adjacent hoops are of the same diameter.

6. An endoluminal stent as claimed in claim 2 wherein adjacent hoops are of a different diameter.

7. An endoluminal stent as claimed in claim 3 wherein axially aligned segments are connected to one another by a tubular fabric element.

8. An endoluminal stent as claimed in claim 2 wherein a first additional segment is axially parallel to, but non-co-axial with, said stent.

9. An endoluminal stent as claimed in claim 8 wherein further comprising a second additional segment axially parallel to said stent, but non-co-axial with either said stent or said first additional stent segment.

10. An endoluminal stent as claimed in claim 9 wherein at least one of said additional stent segments is of frustoconical shape and is further combined with an additional stent segment having an end which includes a mating frustoconical shape.

11. An endoluminal stent as claimed in claim 10 wherein said mating frustoconical stent segments are adapted to be separately placed in a bifurcated artery and then, by expansion of one of said frustoconical stent segments, secured to one another.

12. An endoluminal stent as claimed in claim 1 wherein said hoops are formed of a single continuous wire.

13. An endoluminal stent as claimed in claim 1 wherein said securing means is a suture.

14. An endoluminal stent as claimed in claim 13 wherein said suture is a tied loop of thermoplastic material.

15. An endoluminal stent as claimed in claim 1 wherein said securing means is a ring.

16. An endoluminal stent as claimed in claim 1 wherein said securing means is a staple.

17. An endoluminal stent as claimed in claim 1 wherein said securing means is wire twisted into a loop.

18. An endoluminal stent as claimed in claim 17 wherein said wire is nitinol.

19. An endoluminal stent as claimed in claim 1 wherein said securing means is bead of thermoplastic material.

20. An endoluminal stent as claimed in claim 1 wherein the plane of the circumference at each longitudinal end of the stent is square to the longitudinal axis of the stent.

21. An endoluminal stent as claimed in claim 1 wherein said stent is at least partially covered in fabric.

22. An endoluminal stent as claimed in claim 12 wherein said wire is nitinol.