ENDOVASCULAR DEVICES TO PROTECT ANEURYSMAL WALL

• US 20080188923A1
• Filed: 01/28/2008
• Published: 08/07/2008
• Est. Priority Date: 02/01/2007
• Status: Abandoned Application

• Current Assignee: Jack Fa-De Chu
• Original Assignee: Jack Fa-De Chu
• Inventors: Chu, Jack Fa-De
• Application Number:
  US12/021,249
• Publication Number:
  US 20080188923A1
• Time in Patent Office: Days
• US Class Current: 623/1.15
• CPC Class Codes: A61B 17/12022 Occluding by internal devices, e.g. balloons or releasable wires plugging an opening in the wall of an organ A61B17/0057; occluders for the cervical canal A61F6/146; vas deferens occluders A61F6/20
• CPC Class Codes: A61B 17/12118 for positioning in conjunction with a stent
• CPC Class Codes: A61B 17/12136 Balloons
• CPC Class Codes: A61B 17/1219 expandable in contact with liquids
• CPC Class Codes: A61B 17/12195 comprising a curable material
• 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 2002/072 Encapsulated stents, e.g. wire or whole stent embedded in lining
• CPC Class Codes: A61F 2002/075 the stent being loosely attached to the graft material, e.g. by stitching
• CPC Class Codes: A61F 2002/077 having means to fill the space between stent-graft and aneurysm wall, e.g. a sleeve
• CPC Class Codes: A61F 2230/0071 spherical
• CPC Class Codes: A61F 2250/0003 having an inflatable pocket filled with fluid, e.g. liquid or gas

Abstract

Methods and systems for preventing aneurysm rupture and reducing the risk of migration and endoleak are disclosed. Specifically, an inflatable multiple walls liner is applied directly to treat the interior of the aneurysm site. Also disclosed are methods to deliver the inflatable multiple walls liner directly to treatment sites.

Claims

1. A system to protect the wall of an aneurysm in a vessel wherein the system comprises:

a liner comprising one or more inflatable chambers for the introduction of an inflation medium, said one or more inflatable chambers comprising one or more connectors, wherein said liner is configured to conform to the interior surface of the aneurysm following introduction of said liner into the vessel, and wherein said one or more connectors constrains expansion of said one or more chambers upon introduction of said inflation medium.

2. The system as set forth in claim 1 further comprising means for anchoring said liner to the interior of the vessel.

3. The system as set forth in claim 2, wherein said means for anchoring said liner comprises one or more expandable elements coupled to said liner.

4. The system as set forth in claim 3, wherein said one or more expandable elements comprises a stent.

5. The system as set forth in claim 1, wherein one or more of said inflatable chambers comprises one or more opposing interior walls and said one or more connectors is affixed to opposing interior walls.

6. The system as set forth in claim 5, wherein said one or more connectors comprises a strip, a string, or a bond.

7. The system as set forth in claim 1, wherein said one or more inflatable chambers comprises an inflatable patch or an inflatable channel.

8. The system as set forth in claim 1, wherein said one or more inflatable chambers is disposed helically on the exterior of said liner.

9. The system as set forth in claim 1, wherein said one or more inflatable chambers is disposed circumferentially on the exterior of said liner.

10. The system as set forth in claim 1, wherein the said liner comprises flexible and substantially inelastic biocompatible material.

11. The system as set forth in claim 1, wherein one or more inflatable chambers is in fluid communication with one or more adjacent inflatable chambers.

12. The system as set forth in claim 1 further comprising a one way valve in fluid communication with one or more inflatable chambers.

13. The system as set forth in claim 1, wherein said liner comprises an inner wall defining a main flow conduit of the vessel proximate the aneurysm following introduction of the liner into the vessel, said conduit comprising an inlet and one or more outlets.

14. The system as set forth in claim 13, wherein said main flow conduit is defined by the inner surface of the aneurysm, said connectors and the amount inflation medium in said liner.

15. The system as set forth in claim 1, wherein the inflation medium comprises a fluid comprising a polymer, an oligomer or a monomer.

16. The system as set forth in claim 1, wherein the inflation medium comprises a fluid selected from the group consisting of silicone, hydrogel, saline, water, blood, polyvinyl alcohol, cyanoacrylate, methacrylate, acrylate, polyacrylic acid polymer, polyacrylamide, polyvinyl pyrrolidone, polyacrylonitrile, Hypan, poly(2-hydroxyethyl methacrylate), polyethylene oxide, poly(propylene oxide), poly(ethylene glycol), poly(propylene glycol), Poloxamer, Pluronic, and Tetronics.

17. The system as set forth in claim 1 wherein said inflation medium comprises a fluid, and wherein the fluid is curable by either chemical or physical means after injection into the liner.

18. The system as set forth in claim 1 wherein said inflation medium comprises a fluid, and said fluid comprises a bioactive or a pharmaceutical active component.

19. The system as set forth in claim 1, wherein the liner comprises an outer surface comprising a bioactive or a pharmaceutical active component.

20. The system as set forth in claim 1, wherein the liner comprises an outer surface and surface area, wherein said outer surface is treated with fibers, fibril, foam, or roughening to increase the surface area.

21. The system as set forth in claim 1 further comprising means to introduce a hemodynamic force in said liner whereby said liner expands and conforms to the interior surface of the aneurysm.

22. A system to protect the wall of an aneurysm in a vessel wherein the system comprises:

an inflatable multiple walls liner having an inner wall and an outer wall, wherein said inner wall and outer wall being connected by one or more connectors to form one or more inflatable chambers to be filled by an inflation medium, wherein said liner is configured to conform to the interior surface of the aneurysm by a hemodynamic force in the vessel, and wherein said one or more connectors constrains expansion of said one or more chambers upon introduction of said inflation medium.

23. The system as set forth in claim 22 further comprising means for anchoring said liner to the interior of the vessel.

24. The system as set forth in claim 23, wherein said means for anchoring said liner comprises one or more expandable elements coupled to said liner.

25. A method of treatment of an aneurysm comprising:

providing an inflatable liner comprising one or more inflatable chambers; and

anchoring a portion of the inflatable liner in the vessel adjacent the aneurysm with a first expandable element and

introducing hemodynamic force in the inflatable liner whereby said liner expands and conforms to the interior surface of the aneurysm.

introducing inflation medium into the one or more inflatable chambers whereby said liner expands and protects the vessel.

26. A method of treatment of an aneurysm of a subject vessel wherein the vessel comprises an interior, an interior surface and a hemodynamic force therethrough, the method comprising:

providing an inflation medium, one or more expandable elements and an inflatable liner comprising one or more inflatable chambers, one or more flow conduit outlets;

introducing said inflatable liner into the vessel;

anchoring the inflatable liner within the vessel proximate the aneurysm via deployment of one or more expandable elements;

permitting the hemodynamic force to expand said inflatable liner to substantially conform to the interior surface of the vessel;

securing patency of one or more of said flow conduit outlets via deployment of one or more expandable elements;

introducing said inflation medium into the one or more inflatable chambers; and

removing one or more expandable elements.

27. The method as set forth in claim 26 further comprising the steps of:

providing one or more stents;

introducing one or more stents into the inflatable liner; and

deploying one or more stents within the inflatable liner.

28. The method as set forth in claim 26, wherein said step of anchoring said inflatable liner via deployment of said expandable element permits fluid perfusion therethrough and substantially prevents fluid flow between said inflatable liner and the interior surface of said vessel following deployment of said expandable element.

29. The method as set forth in claim 28, wherein said expandable element is a balloon, a balloon comprising an annular shape or a stent.

30. The method as set forth in claim 26, wherein said one or more expandable elements in said step of securing patency of one or more of said flow conduit outlets comprise a balloon, a balloon comprising an annular shape, or a stent.

31. The method as set forth in claim 26, wherein said inflatable liner further comprising one or more stents.

32. The method as set forth in claim 26 further comprising the step of;

allowing the perfusion of fluid between said inflatable liner and said one or more expandable elements via reducing the size of said one or more expandable elements.

33. A method of treatment of an aneurysm of a subject vessel wherein the vessel comprises an interior, an interior surface and a hemodynamic force therethrough, the method comprising:

providing an inflation medium, one or more expandable elements and an inflatable liner comprising one or more inflatable chambers, one or more flow conduit outlets and one or more stents;

introducing said inflatable liner into the vessel;

anchoring the inflatable liner within the vessel proximate the aneurysm via deployment of one or more stents;

permitting the bemodynamic force to expand said inflatable liner to substantially conform to the interior surface of the vessel;

securing patency of one or more of said flow conduit outlets via deployment of one or more expandable elements;

introducing said inflation medium into the one or more inflatable chambers; and

removing one or more expandable elements.

34. The method as set forth in claim 33 further comprising the steps of:

providing one or more stents;

introducing one or more stents into the inflatable liner; and

deploying one or more stents within the inflatable liner.

35. The method as set forth in claim 33, wherein said step of anchoring said inflatable liner via deployment of said one or more stents permits fluid perfusion therethrough and substantially prevents fluid flow between said inflatable liner and the interior surface of said vessel following deployment of said one or more stents.

36. The method as set forth in claim 33, wherein said one or more expandable elements in said step of securing patency of one or more of said flow conduit outlets comprise a balloon, a balloon comprising an annular shape, or a stent.

37. The method as set forth in claim 33 further comprising the steps of:

deploying one or more expandable elements within the inflatable liner proximate the aneurysm;

allowing the perfusion of fluid between said inflatable liner and said one or more expandable elements via reducing the size of said one or more expandable elements.