Stent and stent delivery assembly and method of use

• US 6,599,315 B2
• Filed: 11/20/2001
• Issued: 07/29/2003
• Est. Priority Date: 12/15/1999
• Status: Expired due to Term

• Current Assignee: Advanced Cardiovascular Systems Incorporated (Abbott Laboratories)
• Original Assignee: Advanced Cardiovascular Systems Incorporated (Abbott Laboratories)
• Inventors: Wilson, W. Stan
• Primary Examiner(s): Willse, David H.
• Assistant Examiner(s): GHERBI, SUZETTE JAIME J
• Application Number:
  US09/991,391
• Publication Number:
  US 20020035392A1
• Time in Patent Office: 616 Days
• Field of Search: 623/1.11, 623/1.15, 606/108, 606/194
• US Class Current: 623/1.11
• CPC Class Codes: A61F 2/856 Single tubular stent with a side portal passage
• 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 2/954 for placing stents or stent-grafts in a bifurcation
• CPC Class Codes: A61F 2/958 Inflatable balloons for placing stents or stent-grafts

Abstract

A stent delivery catheter assembly for delivering and implanting a stent at or near an area of septal perforators includes a torquing member which, in cooperation with a tracking guide wire and a positioning guide wire, facilitates torquing and rotation of the catheter and hence the position of the stent mounted thereon to accurately position and implant the stent at or near the area of septal perforators. The stent of the present invention has an elongated side aperture which is designed to be implanted next to the area of septal perforators to prevent covering of the orifices of the septal perforators.

Claims

1. A method for treating a vessel with septal perforators, comprising:

providing an elongated catheter having an expandable member positioned thereon, tracking guide wire disposed within a tracking guide wire lumen and a positioning guide wire disposed within a positioning guide wire lumen, said positioning guide wire lumen having a distal opening formed in said catheter adjacent said expandable member;

providing a torquing member attached to both said tracking guide wire lumen and said positioning guide wire lumen;

positioning an expandable stent having a side aperture on said catheter so as envelop said expandable member and such that said distal opening of said positioning guide wire is aligned with a portion of said aperture;

advancing said catheter through a vessel having septal perforators along said tracking guide wire to a position wherein said stent is substantially longitudinally aligned and wherein said positioning guide wire lumen opening is generally radially aligned with said septal perforators;

advancing said positioning guide wire so as to emerge from said distal opening in said positioning guide wire and enter one of said septal perforators;

further advancing said catheter in a distal direction so as to cause said catheter and stent to rotate into substantial alignment with said septal perforators by torque created by the positioning guide wire and tracking guide wire which is transferred to the catheter by said torquing member; and

expanding said expandable member to expand said stent.

2. The method of claim 1, wherein said expandable stent has multiple side apertures formed therein.

3. The method of claim 2, wherein each of said apertures is aligned with one of said septal perforators.

4. The method of claim 1, wherein said side aperture is elongated.

5. The method of claim 4, wherein said aperture is aligned with a plurality of said septal perforators.

6. The method of claim 1, wherein said aperture encompasses about 60 degrees of said stent'"'"'s circumference.