Intravascular stent intended in particular for angioplasty

• US 6,264,686 B1
• Filed: 02/24/1998
• Issued: 07/24/2001
• Est. Priority Date: 08/24/1995
• Status: Expired due to Term

• Current Assignee: Patrice Bergeron
• Original Assignee: Patrice Bergeron, Régis Rieu
• Inventors: Bergeron, Patrice, Rieu, Régis
• Primary Examiner(s): SNOW, BRUCE EDWARD
• Application Number:
  US09/028,903
• Time in Patent Office: 1,246 Days
• Field of Search: 623/1, 623/12, 623/1.15, 623/1.16, 606/108, 606/192, 606/194, 606/195
• US Class Current: 623/1.16
• CPC Class Codes: A61F 2/90 characterised by a net-like or mesh-like structure
• CPC Class Codes: A61F 2002/065 Y-shaped blood vessels
• CPC Class Codes: A61F 2230/0008 elliptical or oval

Abstract

An expandable, open-work intravascular stent, having a variable-length of generatrices and an arrangement of radiopaque marker points, is particularly suited for angioplasty as the stent reinforces vessels at bifurcation points while maintaining satisfactory hydrodynamics.

Claims

1. A system for maintaining a patient lumen at a bifurcation of an anatomic canal comprising:

two slanted-end stents each of which comprises a radially expanded mesh structure substantially forming a cylinder having a longitudinal axis, a back end defined by a plane substantially perpendicular to the axis, and a slanted front end defined by a plane oriented relative to the axis at an angle less than 90 degrees;

one V-shaped-end stent comprising a radially expandable mesh structure substantially forming a cylinder having a longitudinal axis, a back end defined by a plane substantially perpendicular to the axis, and a front end defined by the intersection of two planes intersected to form a V-shaped front end as viewed radially;

in which the V-shaped-end stent is implantable in a common branch of a bifurcation of the canal and oriented so that the V-shaped front end extends into the bifurcation; and

in which the slanted-end stents are separately implantable in secondary branches of the bifurcation and are oriented so that each slanted front end extends into the bifurcation in abutting relation to the V-shaped front end, thereby providing reinforcing coverage to substantially all affected area of the bifurcation.

2. The system of claim 1 in which the plane defining the slanted front ends is oriented relative to the axis at approximately 50 degrees.

3. The system of claim 1 further comprising radiopaque markers forming a trihedron position on each of said stent.