Stent for treatment of lesions of bifurcated vessels

• US 6,210,433 B1
• Filed: 03/17/2000
• Issued: 04/03/2001
• Est. Priority Date: 03/17/2000
• Status: Expired due to Fees

• Current Assignee: Jorge Casado Larre
• Original Assignee: Jorge Casado Larre
• Inventors: Larre, Jorge Casado
• Primary Examiner(s): Thaler, Michael H.
• Assistant Examiner(s): DROESCH, KRISTEN L
• Application Number:
  US09/527,355
• Time in Patent Office: 382 Days
• Field of Search: 606/191, 606/194, 606/198, 606/195, 623/1.1, 623/1.15, 623/1.35, 623/1.12, 623/1.16, 623/1.2
• US Class Current: 623/1.15
• CPC Class Codes: A61F 2/86 Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure
• CPC Class Codes: A61F 2/954 for placing stents or stent-grafts in a bifurcation
• CPC Class Codes: A61F 2002/065 Y-shaped blood vessels
• CPC Class Codes: A61F 2230/0017 Angular shapes

Abstract

A stent to be used in angioplastic procedures including a parabolically extending support member; and several hyperbolic transverse members. The parabolically extending support member includes several through openings through which the hyperbolic transversed members are mounted. In the contracted state, the main branch and both secondary branches extend parallel to each other. When expanded, the stent defines two secondary branches and one main branch. The junction of the two secondary branches are protected in the same fashion as a pair of pants or a horse saddle.

Claims

1. A stent to be used in angioplastic procedures for the treatment of lesions in or about the bifurcated areas of vessels, comprising:

A) a parabolically extending support member having a plurality of transverse through openings at predetermined distances from each other and further including first and second ends;

B) a plurality of hyperbolically extending transverse members rotatably mounted to said through openings and further including third and fourth ends and a central portion in between so that, in the collapsed configuration, said first and second ends extend substantially parallel to each other with a relatively small separation in between and said third ends are kept at a parallel and abutting relationship with respect to each other thereby defining a first substantially cylindrical secondary branch and said fourth ends being kept at a parallel and abutting relationship with respect to each other defining a second substantially cylindrical secondary branch and, in the expanded configuration, said first and said second ends being separated from each other a predetermined distance with the central portions of said plurality of hyperbolically extending transverse members defining a main branch.

2. The stent set forth in claim 1 further including:

C) two ring members, one for said first substantially cylindrical secondary branch and one for said second substantially cylindrical secondary branch, said ring members being mounted to said third and fourth ends respectively, thereby defining the terminations of said secondary branches.