FENESTRATION DEVICES, SYSTEMS, AND METHODS

• US 20120136385A1
• Filed: 11/14/2011
• Published: 05/31/2012
• Est. Priority Date: 11/16/2010
• Status: Active Grant

• Current Assignee: W. L. Gore & Associates (W.L. Gore & Associates)
• Original Assignee: W. L. Gore & Associates (W.L. Gore & Associates)
• Inventors: Cully, Edward H.
• Granted Patent: US 9,545,323 B2
• Time in Patent Office: Days
• US Class Current: 606/194
• CPC Class Codes: A61B 1/00082 Balloons
• CPC Class Codes: A61B 1/00085 Baskets
• CPC Class Codes: A61B 1/00154 using guiding arrangements for insertion
• CPC Class Codes: A61B 17/3403 Needle locating or guiding means guides for suture needles A61B17/0482; guiding or tracking by nuclear magnetic resonance G01R33/285
• CPC Class Codes: A61B 17/3478 Endoscopic needles, e.g. for infusion biopsy needles A61B10/0233; catheters with injection needles A61M25/0067
• CPC Class Codes: A61B 18/1492 having a flexible, catheter-like structure, e.g. for heart ablation A61B18/1477 takes precedence
• CPC Class Codes: A61F 2/07 Stent-grafts
• 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 2/958 Inflatable balloons for placing stents or stent-grafts
• CPC Class Codes: A61F 2002/061 provided with means for allowing access to secondary lumens
• CPC Class Codes: A61F 2250/0007 for adjusting length
• 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 25/0108 using radio-opaque or ultrasound markers
• CPC Class Codes: A61M 25/0662 Guide tubes

Abstract

The present disclosure provides methods and apparatuses for guiding an endovascular tool, such as a puncturing tool or an angioscope, in a radial direction, such as toward or through the sidewall of a vessel, stent, or stent graft, using elongate members and specialized catheters. The present disclosure provides methods and apparatuses for locating branch vessels from within a grafted main vessel while maintaining continuous blood flow to the branch vessel. Another aspect of the present disclosure involves a reverse cannulation system, particularly useful for stenting the abdominal aorta proximate the renal arteries and stenting the renal artery.

Claims

1. A guide device deployable through a vessel comprising:

an expandable member movable between a collapsed position and an outwardly extending, expanded position; and

a guide tube operatively coupled to the expandable member and having a distal tip which is movable between a first position generally parallel with the expandable member in the collapsed position and a second position askew to the first position.

2. The guide device of claim 1, wherein the second position is generally orthogonal to the first position.

3. The guide device of claim 1, wherein the expandable member moves in response to selective actuation of the expandable member between the collapsed and expanded positions.

4. The guide device of claim 1, wherein the expandable member comprises an aperture and the distal tip of the guide tube is connected to the expandable member coincident the aperture.

5. The guide device of claim 1, further comprising

a first elongate member comprising a first lumen;

and

a second elongate member comprising a second lumen and a side opening,

wherein the guide tube is disposed along the second lumen and the second elongate member is disposed along the first lumen, and

wherein the expandable member extends between a first end connected to the first elongate member and an opposite second end connected to the second elongate member, such that the expandable member outwardly extend in response to longitudinal displacement of the second elongate member relative to the first elongate member.

6. The guide device of claim 5, wherein the distal tip is movable between the first position to the second position as the expandable member expands in response to corresponding longitudinal displacement of the second elongate member relative to the first elongate member.

7. The guide device of claim 1, wherein the expandable member has a discontinuous structure to allow perfusion of fluid therethrough when in an expanded position.

8. The guide device of claim 7, wherein the expandable member has a discontinuous structure to allow perfusion of fluid therethrough when moving between the expanded and collapsed positions.

9. The guide device of claim 7, wherein the expandable member expands in a substantially radially symmetrical manner.

10. The guide device of claim 7, wherein the expandable member comprises at least one of a malecot structure, a mesh member, a tube with diagonal or longitudinal slits, and at least one slat.

11. The guide device of claim 1, wherein the expandable member comprises nitinol.

12. The guide device of claim 1, further comprising an inflatable member, which upon inflation expands the expandable member.

13. The guide device of claim 12, wherein the expandable member when moving to the collapsed position is configured to confine the inflatable member after the inflatable member is deflated.

14. The guide device of claim 1, wherein the distal tip of the guide tube directs endovascular tools in a direction generally orthogonal to a path of delivery.

15. The guide device of claim 1, wherein the expandable member is adjustable across a range of expanded position diameters.

16. The guide device of claim 15, wherein the distal tip of the guide tube directs devices in a direction substantially perpendicular to a path of delivery throughout the range of expanded position diameters.

17. The guide device of claim 1, wherein the distal tip comprises a radiopaque material.

18. A method for guiding an endovascular tool in a vessel comprising:

deploying a guide device into a main vessel wherein the guide device comprises;

an expandable member movable between a collapsed position and an outwardly extending expanded position; and

a guide tube operatively coupled to the expandable member and having a distal tip which is movable between a first position generally parallel with the expandable member in the collapsed position and a second position generally orthogonal to the first position.

outwardly extending the expandable member and thereby causing movement of the guide tube to the second position with only minor disruption of fluid flow through the vessel.

19. The method of claim 18, wherein the distal tip of the guide tube, in the second position, extends toward a treatment site on the main vessel wall, thereby directing an endovascular tool passed through the guide tube toward the treatment site.

20. The method of claim 18, wherein the expandable member is outwardly extended by inflating an inflatable member.

21. The method of claim 18, wherein the expandable member is outwardly extended by applying a compression force to the expandable member.

22. The method of claim 18, further comprises selectively positioning the guide device with the assistance of a detector, ex vivo, showing an in vivo position of a radiopaque distal tip.

23. The method of claim 18, further comprises advancing an endovascular tool through a distal end of the guide tube.

24. The method of claim 23, further comprises puncturing a selected site with the endovascular tool.

25. The method of claim 24, further comprises injecting a contrast agent to verify a side branch is in fluid communication with the main vessel.

26. The method of claim 23, wherein the endovascular tool is an elongate member comprising a tapered or sharp distal end extendable through the guide tube.