Stent and catheter assembly and method for treating bifurcations

• US 6,896,699 B2
• Filed: 10/08/2003
• Issued: 05/24/2005
• Est. Priority Date: 08/13/1997
• Status: Expired due to Fees

• Current Assignee: Advanced Cardiovascular Systems Incorporated
• Original Assignee: Advanced Cardiovascular Systems Incorporated
• Inventors: Wilson, W. Stan, Mauch, Kevin M.
• Primary Examiner(s): TRUONG, KEVIN THAO
• Application Number:
  US10/681,692
• Publication Number:
  US 20040073285A1
• Time in Patent Office: 594 Days
• Field of Search: 623/1.35, 623/1.36, 623/1.11, 606/191, 606/192, 606/194, 606/198, 606/195
• US Class Current: 623/1.35
• CPC Class Codes: A61F 2/856 Single tubular stent with a side portal passage
• CPC Class Codes: A61F 2/90 characterised by a net-like or mesh-like structure
• 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 2/915 with bands having a meander structure, adjacent bands being connected to each other
• 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
• CPC Class Codes: A61F 2002/065 Y-shaped blood vessels
• CPC Class Codes: A61F 2002/067 modular
• CPC Class Codes: A61F 2002/821 Ostial stents
• CPC Class Codes: A61F 2002/91508 the meander having a difference in amplitude along the band
• CPC Class Codes: A61F 2002/91516 the meander having a change in frequency along the band
• CPC Class Codes: A61F 2002/91533 characterised by the phase between adjacent bands
• CPC Class Codes: A61F 2002/91575 connected peak to trough
• CPC Class Codes: A61F 2250/0014 having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis
• CPC Class Codes: A61F 2250/006 modular
• CPC Class Codes: A61M 2025/1045 for treating bifurcations, e.g. balloons in y-configuration, separate balloons or special features of the catheter for treating bifurcations
• CPC Class Codes: A61M 25/10 Balloon catheters A61M25/0125 takes precedence; embolectomy A61B17/22032; retractors A61B17/02; inflatable balloons for placing stents or stent-grafts A61F2/958 ; stomach balloons for treatment of obesity A61F5/0003; oesophagal tubes A61J15/00

Abstract

An apparatus and method is provided for stenting bifurcated vessels. A proximal angled stent is configured for implanting in a side-branch vessel wherein the proximal angled stent has an angulated portion that corresponds to the angle formed by the intersection of the side-branch vessel and the main vessel so that all portions of the side-branch vessel at the bifurcation are covered by the proximal angled stent. A main-vessel stent is provided for implanting in the main vessel, wherein the main-vessel stent has an aperture or stent cell that aligns with the opening to the side-branch vessel to permit unobstructed blood flow between the main vessel and the side-branch vessel. Side-branch and main-vessel catheter assemblies are advanced over a pair of guide wires for delivering, appropriately orienting, and implanting the proximal angled stent and the apertured stent.

Claims

1. A catheter assembly for treating a bifurcated region of a body lumen, comprising:

a catheter having a proximal end and a distal end;

a first expandable member disposed near the distal end of the catheter;

a second expandable member disposed near the distal end of the catheter;

a first guide wire lumen associated with the first expandable member;

a second guide wire lumen associated with the second expandable member and having a distal end;

a relatively short third guide wire lumen associated with the first expandable member; and

a guide wire extending through the second guide wire lumen and into the third guide wire lumen to releasably connect the first expandable member and the second expandable member.

2. The catheter assembly of claim 1, wherein the first guide wire lumen extends through the catheter from the catheter proximal end through the first expandable member.

3. The catheter assembly of claim 2, wherein the first guide wire lumen is an over-the-wire lumen.

4. The catheter assembly of claim 1, wherein the second guide wire lumen extends from the catheter proximal end through the second expandable member.

5. The catheter assembly of claim 1, wherein the first guide wire lumen extends through a portion of the catheter and through the first expandable member.

6. The catheter assembly of claim 1, wherein the second guide wire lumen extends through a portion of the catheter and through the second expandable member.

7. The catheter assembly of claim 1, wherein the second guide wire lumen is an over-the-wire lumen.

8. The catheter assembly of claim 1, wherein the second guide wire lumen is a rapid-exchange lumen and the first guide wire lumen is an over-the-wire lumen.

9. The catheter assembly of claim 1, wherein the third guide wire lumen is positioned at the catheter distal end.

10. The catheter assembly of claim 1, wherein the third guide wire lumen has a distal end and a proximal end.

11. The catheter assembly of claim 10, wherein the guide wire has a distal end and a proximal end, the distal end of the guide wire being sized for slidable movement within the third guide wire lumen.

12. The catheter assembly of claim 11, wherein the guide wire distal end can extend through the third guide wire distal end.

13. The catheter assembly of claim 11, wherein the third guide wire lumen distal end is sealed so that the guide wire distal end enters the proximal end of the third guide wire lumen and extends into the third guide wire lumen, but not through the distal end of the third guide wire lumen.