Tubular endoluminar prosthesis having oblique ends

• US 6,491,719 B1
• Filed: 06/02/1998
• Issued: 12/10/2002
• Est. Priority Date: 03/10/1995
• Status: Expired due to Term

• Current Assignee: Medtronic Incorporated (Medtronic Plc)
• Original Assignee: Medtronic Incorporated (Medtronic Plc)
• Inventors: Lenker, Jay A., Fogarty, Thomas J.
• Primary Examiner(s): SNOW, BRUCE EDWARD
• Application Number:
  US09/088,811
• Time in Patent Office: 1,652 Days
• Field of Search: 623/1.37, 623/1.15, 623/1.31
• US Class Current: 623/1.37
• CPC Class Codes: A61F 2/07 Stent-grafts
• 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 2002/075 the stent being loosely attached to the graft material, e.g. by stitching
• CPC Class Codes: A61F 2002/91525 within the whole structure different bands showing different meander characteristics, e.g. frequency or amplitude
• CPC Class Codes: A61F 2002/91541 Adjacent bands are arranged out of phase
• CPC Class Codes: A61F 2002/91558 connected peak to peak
• CPC Class Codes: A61F 2220/0058 soldered or brazed or welded
• 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 2230/0054 V-shaped

Abstract

An intraluminar prosthesis which includes a tubular member having at least one end which is at an oblique angle to the lumen. The prosthesis is inserted into a body lumen, such as a blood vessel, while compressed. The prosthesis is expanded within the lumen, and the oblique end of the prosthesis contacts the lumen at an oblique angle. This oblique angle reduces the stenotic effects of hyperplasia which generally occurs at the ends of intraluminal prostheses.

Claims

1. An intravascular prosthesis comprising a tubular member having a proximal end, a distal end, a lumen, and luminal axis, wherein the tubular member is formed of a plurality of band members and is insertable within a blood vessel in a small diameter configuration, and is expandable within the blood vessel to an expanded diameter configuration forming a lumen having a substantially uniform cross section perpendicular to said luminal axis from said distal end to said proximal end of said tubular member, and

wherein at least one of the proximal end and the distal end has a terminal edge which is disposed substantially at an oblique angle relative to the luminal axis so that the terminal edge continuously contacts a surrounding blood vessel wall along an oblique cross section when expanded therein.

2. An intravascular prosthesis as in claim 1, wherein at least a portion of the tubular member is composed of a malleable material.

3. An intravascular prosthesis as in claim 1, wherein at least a portion of the tubular member is composed of a resilient material.

4. An intravascular prosthesis as in claim 1, wherein the oblique angle is in the range between 20°

and 80°

.

5. An intravascular prosthesis as in claim 1, wherein at least one of the terminal edges defines an oblique angle at least in part as a series of staggered steps.

6. An intravascular prosthesis as in claim 1, wherein the intravascular prosthesis is configured for insertion of a balloon catheter into the intravascular prosthesis for expanding the intravascular prosthesis by inflating the balloon catheter, the intravascular prosthesis remains expanded after removal of the balloon catheter.

7. An intravascular prosthesis as in claim 1, wherein the intravascular prosthesis is restrained in a radially compressed mode prior to positioning, and released at the target location.

8. An intravascular prosthesis as in claim 1, wherein the intravascular prosthesis is configured for insertion of a balloon catheter into at least one end of the intravascular prosthesis for expanding the at least one end of the intravascular prosthesis by inflating the balloon catheter, wherein during expansion a middle portion of the intravascular prosthesis is restrained in a radially compressed mode prior to positioning and releasing the middle portion at a target location.

9. An intraluminal graft comprising:

a perforate tubular frame having a proximal end, a distal end, a lumen, and a luminal axis; and

a first liner which covers at least a portion of a first surface of the tubular frame,

wherein the tubular frame is formed of a plurality of band members and is insertable within a body lumen in a small diameter configuration, and is expandable within the body lumen to an expanded diameter configuration, and

wherein the proximal end and the distal end of the tubular frame each have terminal edges which are disposed substantially at an oblique angle relative to the luminal axis so that each terminal edge continuously contacts a surrounding luminal wall along an oblique cross section when expanded therein.

10. An intraluminal graft as in claim 9, wherein the proximal end of the first liner and a distal end of the first liner are angularly aligned with the proximal end of the tubular frame and the distal end of the tubular frame, respectively.

11. An intraluminal graft as in claim 9, wherein the proximal end of the first liner and a distal end of the first liner are fully aligned with the proximal end of the tubular frame and the distal end of the tubular frame, respectively.

12. An intraluminal graft as in claim 9, wherein the liner is tied to the tubular frame.

13. An intraluminal graft as in claim 9, wherein at least a portion of the tubular member is composed of a malleable material.

14. An intraluminal graft as in claim 9, wherein at least a portion of the tubular member is composed of a resilient material.

15. An intraluminal graft as in claim 14, wherein the tubular frame is adapted to resiliently expand to the expanded mode when placed within the body lumen.

16. An intraluminal graft as in claim 9, further comprising a second liner disposed over at least a portion of a second surface of the tubular frame.

17. An intraluminal graft as in claim 16, wherein the second liner is welded to the first liner.

18. An intraluminal graft as in claim 9, wherein at least one of the terminal edges defines an oblique angle at least in part as a series of staggered steps.

19. An intraluminal graft comprising:

a perforate tubular frame having a proximal end, a distal end, a lumen, and a luminal axis; and

a first liner which covers at least a portion of a first surface of the tubular frame,

wherein the tubular frame insertable within a body lumen in a small diameter configuration, and is expandable within the body lumen to an expanded diameter configuration,

wherein the proximal end and the distal end of the tubular frame each have terminal edges which are disposed substantially at an oblique angle relative to the luminal axis so that each terminal edge continuously contacts a surrounding luminal wall along an oblique cross section when expanded therein, and

wherein at least one of the proximal end and the distal end defines a series of cantilevered elements.