Bifurcated highly conformable medical device branch access

• US 8,474,120 B2
• Filed: 06/18/2010
• Issued: 07/02/2013
• Est. Priority Date: 10/09/2009
• Status: Active Grant

• Current Assignee: W. L. Gore & Associates (W.L. Gore & Associates)
• Original Assignee: W. L. Gore & Associates (W.L. Gore & Associates)
• Inventors: Hagaman, Logan R., Hartman, Cody L., Jacoby, Russell L., Wolfe, Roark N.
• Primary Examiner(s): Hong, John C
• Application Number:
  US12/818,551
• Publication Number:
  US 20110087319A1
• Time in Patent Office: 1,110 Days
• Field of Search: 294/58, 294/69, 294/28, 295/05, 295/06, 623/1.13, 623/1.14, 623/1.15, 623/1.16, 623/1.18, 623/1.21, 623/1.22, 623/1.35, 156/252
• US Class Current: 29/458
• CPC Class Codes: A61F 2/07 Stent-grafts
• CPC Class Codes: A61F 2/852 Two or more distinct overlapping stents
• CPC Class Codes: A61F 2/856 Single tubular stent with a side portal passage
• CPC Class Codes: A61F 2/88 the wire-like elements formed as helical or spiral coils forming a net-like or mesh-like structure A61F2/90
• CPC Class Codes: A61F 2/89 the wire-like elements comprising two or more adjacent rings flexibly connected by separate members
• CPC Class Codes: A61F 2/954 for placing stents or stent-grafts in a bifurcation
• CPC Class Codes: A61F 2002/061 provided with means for allowing access to secondary lumens
• CPC Class Codes: A61F 2002/067 modular
• CPC Class Codes: A61F 2002/075 the stent being loosely attached to the graft material, e.g. by stitching
• CPC Class Codes: A61F 2220/0025 Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
• CPC Class Codes: A61F 2220/0033 made by longitudinally pushing a protrusion into a complementary-shaped recess, e.g. held by friction fit
• CPC Class Codes: A61F 2220/005 using adhesives
• CPC Class Codes: A61F 2230/001 Figure-8-shaped, e.g. hourglass-shaped
• CPC Class Codes: A61F 2240/001 Designing or manufacturing processes
• CPC Class Codes: Y10T 156/1056 Perforating lamina
• CPC Class Codes: Y10T 29/49885 with coating before or during assembling

Abstract

A method of making a multi-lumen stent graft includes covering a first mandrel that comprises a groove and a back wall of the groove with an innermost polymeric tube; slitting the innermost polymeric tube along the back wall of the groove; placing a second mandrel into the groove of the first mandrel and aligning the second mandrel with the back wall of the groove, deforming the innermost polymeric tube; placing an outermost polymeric tube over the innermost polymeric tube; and cutting an opening in the outermost polymeric tube over the second smaller mandrel, wherein the outermost polymeric tube and innermost polymeric tube comprise a graft member.

Claims

1. A method of making a multi-lumen stent graft comprising:

covering a first mandrel that comprises a groove and a back wall of said groove with an innermost polymeric tube;

slitting said innermost polymeric tube along said back wall of said groove;

placing a second mandrel into said groove of the first mandrel and aligning said second mandrel with the back wall of the groove, deforming said innermost polymeric tube;

placing an outermost polymeric tube over said innermost polymeric tube; and

cutting an opening in said outermost polymeric tube over said second mandrel;

wherein said outermost polymeric tube and innermost polymeric tube comprise a graft member.

2. The method of claim 1, wherein a primary stent is placed over said graft member.

3. The method of claim 2, wherein said primary stent is attached to said graft member by coupling member.

4. The method of claim 2, wherein said primary stent comprises undulations.

5. The method of claim 4, wherein said undulations are in-phase.

6. The method of claim 1, wherein said outermost polymeric tube comprises ePTFE.

7. The method of claim 1, wherein said innermost polymeric tube comprises ePTFE.

8. The method of claim 1, wherein there is a secondary stent or stent assembly around said second mandrel.

9. The method of claim 8, wherein said secondary stent or stent assembly abuts at least a portion of the innermost tube.

10. The method of claim 1, wherein the slitting of the innermost polymeric tube and making of an opening in the outermost polymeric tube creates a secondary lumen that is in fluid communication through said openings.