Radially expandable tubular prosthesis

• US 5,653,746 A
• Filed: 06/05/1995
• Issued: 08/05/1997
• Est. Priority Date: 03/08/1994
• Status: Expired due to Term

• Current Assignee: Lifeshield Sciences LLC (Acacia Research Corporation)
• Original Assignee: Meadox Medicals, Inc. (Boston Scientific Corporation)
• Inventors: Schmitt, Peter J.
• Primary Examiner(s): BRITTINGHAM, DEBRA
• Application Number:
  US08/462,230
• Time in Patent Office: 792 Days
• Field of Search: 623/1, 623/11, 623/12, 600/36, 606/195, 606/198, 606/194, 604/8
• US Class Current: 128/898
• CPC Class Codes: A61F 2/06 Blood vessels
• CPC Class Codes: A61F 2/07 Stent-grafts
• CPC Class Codes: A61F 2/90 characterised by a net-like or mesh-like structure
• CPC Class Codes: A61F 2002/075 the stent being loosely attached to the graft material, e.g. by stitching
• CPC Class Codes: A61F 2240/001 Designing or manufacturing processes
• CPC Class Codes: A61F 2250/001 for adjusting a diameter
• CPC Class Codes: A61F 2250/0082 specially designed for children, e.g. having means for adjusting to their growth
• CPC Class Codes: Y10S 623/903 Blood vessel

Abstract

A radially expandable tubular prosthesis which allows for controlled expansion in a circumferential direction following implantation while limiting expansion in a longitudinal direction. The prosthesis is particularly suited to intraluminal implantation via a catheter and is also particularly suited for percutaneous implantation in children.

Claims

1. A method for intraluminally repairing a damaged lumen in a patient comprising:

delivering an expandable prosthesis to a site of damage in said lumen, said prosthesis being formed from a tubular substantially fluid-impermeable polymeric fabric having yams which extend around the circumference of said fabric and which are sufficiently undrawn to allow for controlled inelastic radial expansion upon the application of a preselected radial force thereto; and

delivering an internal preselected radial force to said prosthesis sufficient to inelastically expand said prosthesis.

2. The method of claim 1, wherein said prosthesis is expanded via a balloon catheter.

3. The method of claim 1, wherein said prosthesis includes means for securing said prosthesis to said lumen.

4. The method of claim 3, further comprising the step of securing said expandable prosthesis to said lumen.

5. The method of claim 1, wherein said lumen is a blood vessel.

6. The method according to claim 1, wherein said prosthesis is delivered intraluminally to said damaged lumen via a catheter.

7. The method of claim 6, wherein said prosthesis is initially sized for intraluminal delivery via said catheter without need for rolling or bunching of said prosthesis.

8. The method according to claim 6, wherein said prosthesis is expanded until its diameter substantially conforms to that of said damaged lumen.

9. The method according to claim 1, wherein said patient is a child, and said prosthesis is surgically implanted in said child.

10. The method according to claim 9, wherein said prosthesis is expanded following a period of growth in said child until its diameter substantially conforms to that of a connecting host lumen which has experienced a period of circumferential growth.