Modular bifurcated vascular prosthesis

• US 6,299,634 B1
• Filed: 11/25/1998
• Issued: 10/09/2001
• Est. Priority Date: 05/28/1996
• Status: Expired due to Term

• Current Assignee: Patrice Bergeron
• Original Assignee: Patrice Bergeron
• Inventors: Bergeron, Patrice
• Primary Examiner(s): Mancene, Gene
• Assistant Examiner(s): Robert, Eduardo C.
• Application Number:
  US09/200,323
• Time in Patent Office: 1,049 Days
• Field of Search: 623/1.1, 623/1.12, 623/1.13, 623/1.15, 623/1.35, 606/194, 606/192, 606/198
• US Class Current: 623/1.1
• 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 2/958 Inflatable balloons for placing stents or stent-grafts
• CPC Class Codes: A61F 2002/065 Y-shaped blood vessels

Abstract

A bifurcated vascular prosthesis including a tubular main branch extended by at least two sub-branches, wherein at least one part of the main branch has an expandable strengthener in the form of an expandable annular section; and each sub-branch has at least one expandable zone longitudinally offset to avoid overlapping of corresponding longitudinally offset expandable zones between sub-branches.

Claims

1. A bifurcated vascular prosthesis, comprising a tubular main branch extended by at least two sub-branches, wherein:

the main branch is comprised of an expandable material;

at least one part of the main branch has an expandable strengthener in the form of an expandable annular section;

each sub-branch has at least one expandable zone longitudinally offset to avoid overlapping of corresponding longitudinally offset expandable zones between sub-branches; and

an end of the main branch opposite to the bifurcation is formed by a partially reinforced tubular section, wherein a part of said expandable material of said tubular section has been stripped away to facilitate adherence to an artery.

2. The prosthesis of claim 1, wherein the main branch is adapted to be expanded up to a diameter of approximately 28 mm, and the sub-branches have a diameter of approximately 10 mm.

3. The prosthesis of claim 1, wherein the main branch is made of reinforced PTFE with one or more expandable annular sections.

4. The prosthesis of claim 1, wherein each sub-branch narrows toward its distal end.

5. The prosthesis of claim 1, wherein the main branch is extended by two reinforced sub-branches having zones that are expandable up to a diameter of approximately 10 mm, the expandable zones being longitudinally offset in order to avoid overlapping of the expandable zones between the two sub-branches, one of the sub-branches being longer than the other.

6. The prosthesis of claim 5, wherein the expandable zones are reinforced with expandable annular sections.

7. The prosthesis of claim 5, wherein the main branch is made of reinforced PTFE with one or more expandable annular sections.

8. The prosthesis of claim 5, wherein each sub-branch narrows towards its distal end.

9. The prosthesis of claim 1, wherein each sub-branch narrows toward its distal end.

10. The prosthesis of claim 1, wherein:

the main branch is made of PTFE reinforced with one or more expandable annular sections; and

each sub-branch narrows towards its distal end.

11. The prosthesis of claim 10, wherein:

the main branch is adapted to be expanded up to a diameter of approximately 28 mm, and the sub-branches have a diameter of approximately 10 mm.