Side branched endoluminal prostheses and methods of delivery thereof

• US 8,267,988 B2
• Filed: 10/28/2009
• Issued: 09/18/2012
• Est. Priority Date: 04/24/2007
• Status: Active Grant

• Current Assignee: W. L. Gore & Associates (W.L. Gore & Associates)
• Original Assignee: W. L. Gore & Associates (W.L. Gore & Associates)
• Inventors: Hamer, Rochelle M., Johnson, Eric Gerard
• Primary Examiner(s): Pellegrino, Brian
• Assistant Examiner(s): Straszheim, Rebecca
• Application Number:
  US12/607,147
• Publication Number:
  US 20100049298A1
• Time in Patent Office: 1,056 Days
• Field of Search: 623/1.11, 623/1.12, 623/1.23
• US Class Current: 623/1.12
• CPC Class Codes: A61F 2/07 Stent-grafts
• CPC Class Codes: A61F 2/856 Single tubular stent with a side portal passage
• CPC Class Codes: A61F 2/95 Instruments specially adapted for placement or removal of stents or stent-grafts
• CPC Class Codes: A61F 2/9522 Means for mounting a stent or stent-graft onto or into a placement instrument
• 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 2/966 with relative longitudinal movement between outer sleeve and prosthesis, e.g. using a push rod
• CPC Class Codes: A61F 2/97 the outer sleeve being splittable
• CPC Class Codes: A61F 2002/061 provided with means for allowing access to secondary lumens
• CPC Class Codes: A61F 2002/075 the stent being loosely attached to the graft material, e.g. by stitching
• CPC Class Codes: A61F 2002/826 more than one stent being applied sequentially
• CPC Class Codes: A61F 2002/9511 the retaining means being filaments or wires
• CPC Class Codes: A61F 2002/9623 the sleeve being reinforced
• CPC Class Codes: A61F 2210/0004 bioabsorbable
• CPC Class Codes: A61F 2210/0014 using shape memory or superelastic materials, e.g. nitinol
• CPC Class Codes: A61F 2230/0006 circular
• CPC Class Codes: A61F 2250/006 modular

Abstract

An expandable prosthetic device and method of delivery that allows the initial placement of multiple guidewires into selected target sites. The prosthesis includes a main body device. This main body device has a separate side branch guidewire lumen that passes through the main body device and through a side opening in the main body device. As the main body device is advanced, the side opening is self guided (by the side branch guidewire) and self-aligns to the side branch vessel ostium. The main body device is then deployed, leaving the side branch guidewire in place. A side branch device is then advanced along the side branch guidewire through the main body device, through the side wall opening and into the native side branch vessel. The side branch device can then be deployed to engage the main body device and the native side branch vessel.

Claims

1. Method for delivering an expandable prosthetic device comprising the steps of:

advancing a main body guidewire into a main vessel;

advancing a side branch guidewire into a side branch vessel;

providing a catheter assembly comprising a first catheter having opposite proximal and distal catheter portions and a catheter main guidewire lumen;

an expandable main body device disposed along the distal catheter portion and having a first open end, a second open end, a wall extending from the first open end to the second open end, a lumen extending from the first open end to the second open end, at least one side opening in the wall;

a guidewire tube having a first end, a second end, and a lumen, the guidewire tube extending through the expandable main body device lumen between at least the at least one expandable main body device side opening and a point proximal to the second open end; and

a constraining sleeve disposed around and compressing the expandable main body device onto a portion of the guidewire tube extending through the expandable main body device lumen;

backloading the catheter main guidewire lumen of the first catheter and the lumen of the expandable main body device onto the main body guidewire;

backloading the guidewire tube onto the side branch guidewire;

removing the guidewire tube from the compressed expandable main body device;

advancing the first catheter and the expandable main body device into the main vessel and aligning the at least one side opening with the side branch vessel;

expanding the expandable main body device by releasing the constraining sleeve; and

removing the first catheter.

2. The method of claim 1, further comprising the steps of:

providing a second catheter having a distal end, a proximal end, a distal portion, a proximal portion, a lumen extending from the distal end to the proximal end, and an expandable side branch device loaded on the distal portion;

advancing the second catheter and the expandable side branch device along the side branch guidewire through the expanded expandable main body device, out the at least one side opening, and at least partially into the side branch vessel;

expanding the expandable side branch device; and

removing the second catheter.