Implantable tubular prosthesis having integral cuffs

• US 5,522,881 A
• Filed: 06/28/1994
• Issued: 06/04/1996
• Est. Priority Date: 06/28/1994
• Status: Expired due to Term

• Current Assignee: Lifeshield Sciences LLC (Acacia Research Corporation)
• Original Assignee: Meadox Medicals, Inc. (Boston Scientific Corporation)
• Inventors: Lentz, David J.
• Primary Examiner(s): ISABELLA, DAVID J
• Application Number:
  US08/267,468
• Time in Patent Office: 707 Days
• Field of Search: 623/1, 623/2, 623/11, 623/12, 623/66, 604/93-96, 606/191, 606/198
• US Class Current: 623/1.13
• CPC Class Codes: A61F 2/07 Stent-grafts
• CPC Class Codes: A61F 2/89 the wire-like elements comprising two or more adjacent rings flexibly connected by separate members
• CPC Class Codes: A61F 2/90 characterised by a net-like or mesh-like structure
• CPC Class Codes: A61F 2002/072 Encapsulated stents, e.g. wire or whole stent embedded in lining
• CPC Class Codes: A61F 2230/005 Rosette-shaped, e.g. star-shaped

Abstract

An implantable tubular prosthesis having cuffs adapted to accommodate stents. The prosthesis includes a hollow tubular conduit with cuffs at each end. Each of the cuffs has a closed end and a open end to create a slot for housing the stents. The prosthesis may be an implantable tubular intraluminal prosthesis for insertion within a body vessel, where the hollow tubular conduit is radially expandable to buttress the body vessel. Alternatively, the prosthesis may be an implantable tubular prosthetic graft for surgical replacement of damaged or diseased existing body vessels. The tubular prosthesis and stent combination may be radially expanded so that the stents anchor the prosthesis within the lumen. The slots which house the stents, prevent contact between the stents and fluids flowing through the body vessel.

Claims

1. An implantable prosthesis comprising:

a tubular conduit having an elongate body and opposed open ends, said conduit being capable of radial diametrical change between a first diameter and a second diameter;

an elongate cuff formed at one end of said body said cult defining an open-ended slot between said cuff and said body;

a variable diameter generally annular stent supported by said cuff said stent being freely insertably and removably positionable within said slot prior to or after implantation of said body.

3. An implantable prosthesis of claim 1 wherein said cuff has a closed end and an open end defining a slot for insertable accommodation of said stent.

4. An implantable prosthesis of claim 1 wherein said tubular conduit includes a plurality of longitudinal ribs to permit radial contraction from said first diameter to said second diameter to provide for intraluminal deployment.

5. An implantable prosthesis of claim 4 wherein said variable diameter stent is radially collapsible to permit intraluminal deployment thereof.

6. An implantable prosthesis of claim 5 wherein said tubular conduit is radially expandable from said second diameter to said first diameter after said intraluminal deployment.

7. An implantable prosthesis of claim 6 wherein said stent is radially expandable after said intraluminal deployment.

8. An implantable prosthesis of claim 1 wherein said tubular conduit is formed of a textile fabric.

9. An implantable prosthesis of claim 1 wherein said tubular conduit is formed from polytetrafluoroethylene.

10. An implantable prosthesis of claim 1 wherein said stent is formed of a wire mesh.

11. An implantable prosthesis of claim 1 wherein said cuff is integrally formed with said tubular conduit.

12. An implantable prosthesis of claim 11 wherein one end of said tubular conduit is folded back upon said body to form said cuff.

13. An implantable prosthesis of claim 12 wherein said one end of said tubular conduit is folded externally over said body.

14. An implantable prosthesis of claim 12 wherein said other end of said tubular conduit includes a cuff.

15. An implantable prosthesis of claim 1 wherein said cuff is compliant to accommodate said stent within a range of different stent sizes.

2. An implantable prosthesis of claim i wherein said cuff defines a partial enclosure with said body for enclosing said stent.

16. A prosthesis for implantation within a body lumen comprising:

an elongate radially expandable tubular body;

a pair of cuffs, one cuff formed at each end of said body; and

a pair of radially expandable stents one stent resident in each cuff of said pair of cuffs wherein each of said cuff having an open-ended slot between said cuff and said body, and said stent being freely insertably and removably positionable within said slot prior to or after implantation of said tubular body.

17. A prosthesis of claim 16 wherein said cuffs are elongate members each having a closed end and an open end for insertion of said stent.

18. A prosthesis of claim 17 wherein said ends of said body are folded back over to form said cuffs.

19. A prosthesis of claim 18 wherein said cuffs and said tubular body define slots enclosing said stents.

20. A prosthesis of claim 16 wherein said stent is a generally annular wire mesh member.

21. A prosthesis of claim 16 wherein said tubular body is formed of a synthetic fabric.

22. A prosthesis of claim 16 wherein said tubular body is formed of polytetrafluoroethylene.