Devices and methods for treatment of vascular aneurysms

• US 8,562,662 B2
• Filed: 11/02/2006
• Issued: 10/22/2013
• Est. Priority Date: 11/26/2001
• Status: Active Grant

• Current Assignee: Endologix
• Original Assignee: Thomas J. Foarty
• Inventors: Kim, Steven W., Shiu, Brian K.
• Primary Examiner(s): SEVERSON, RYAN J
• Application Number:
  US11/555,938
• Publication Number:
  US 20070061005A1
• Time in Patent Office: 2,546 Days
• Field of Search: 606/200, 623/1.15, 623/1.25, 623/1.36
• US Class Current: 623/1.11
• 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 17/12036 partial occlusion
• CPC Class Codes: A61B 17/12118 for positioning in conjunction with a stent
• CPC Class Codes: A61B 17/12136 Balloons
• CPC Class Codes: A61B 17/12186 liquid materials adapted to be injected
• CPC Class Codes: A61B 17/1219 expandable in contact with liquids
• CPC Class Codes: A61B 17/12195 comprising a curable material
• CPC Class Codes: A61B 2017/00898 expandable upon contact with fluid
• CPC Class Codes: A61B 2017/00986 Malecots, e.g. slotted tubes, of which the distal end is pulled to deflect side struts
• CPC Class Codes: A61B 2017/1205 Introduction devices
• CPC Class Codes: A61B 2017/3484 Anchoring means, e.g. spreading-out umbrella-like structure
• CPC Class Codes: A61F 2/07 Stent-grafts
• CPC Class Codes: A61F 2/90 characterised by a net-like or mesh-like structure
• 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 2002/077 having means to fill the space between stent-graft and aneurysm wall, e.g. a sleeve
• CPC Class Codes: A61F 2002/823 Stents, different from stent-grafts, adapted to cover an aneurysm
• CPC Class Codes: A61F 2250/0003 having an inflatable pocket filled with fluid, e.g. liquid or gas

Abstract

The present invention relates to devices and methods for the treatment of diseases in the vasculature, and more specifically, devices and methods for treatment of aneurysms found in blood vessels. In a first embodiment of the present invention, a two part prostheses, where one part is an expandable sponge structure and the other part is an expandable tubular mesh structure, is provided. In the first embodiment, the expandable sponge structure is intended to fill the aneurysm cavity to prevent further dilatation of the vessel wall by creating a buffer or barrier between the pressurized pulsating blood flow and the thinning vessel wall. In the first embodiment, the expandable tubular mesh structure is placed across the aneurysm, contacting the inner wall of healthy vessel proximal and distal to the aneurysm.

Claims

1. A system for treating an aneurysm, said system comprising:

at least one double-walled filling structure having an outer wall and an inner wall, a hardenable fluid filling medium, wherein the filling structure is filled with the hardenable fluid filling medium so that the outer wall conforms to the inside surface of the aneurysm and the inner surface forms a generally tubular lumen to provide blood flow, and wherein the generally tubular lumen bifurcates at a bifurcation point, and wherein the outer wall and the inner wall extend from a first location superior of the bifurcation point to a second location inferior of the bifurcation point; and

a delivery catheter having an expandable tubular support which can be positioned within the tubular lumen to carry the double-walled filling structure, and wherein a first longitudinal end of the tubular lumen comprises a first stent, and wherein the second longitudinal end of the tubular lumen comprises a second stent.

2. A system as in claim 1, wherein the expandable tubular support extends upstream and downstream from the double-walled filling structure so that tubular support aligns and conforms each end of the filling structure with the blood vessel.

3. A system as in claim 1, wherein at least an outer wall of the filling structure is formed from a compliant material.

4. A system as in claim 1, wherein substantially the entire filling structure is formed from a compliant material.

5. A system as in claim 1, wherein tubular support comprises an inflatable support balloon having a non-compliant structure.

6. A system as in claim 1, wherein the stent is expandable to one or more fixed diameters.

7. A system as in claim 1, wherein at least a portion of an exterior surface of the filling structure is modified to enhance sealing or tissue ingrowth.

8. A system as in claim 1, wherein the tubular support is positioned in direct contact with the tubular lumen of the double walled filling structure.

9. The system of claim 1, wherein the outer wall and the inner wall extend from a first location at a terminal superior end of the filling structure to a second location inferior of the bifurcation point.

10. The system of claim 1, wherein the outer wall and the inner wall extend from a first location superior to the bifurcation point to a second location at a terminal inferior end of the filling structure.

11. The system of claim 1, wherein the outer wall and the inner wall extend from a first location at a terminal superior end of the filling structure to a second location at a terminal inferior end of the filling structure.

12. The system of claim 1, wherein the hardenable fluid filling medium comprises a flowable polymer that is curable in situ.

13. The system of claim 12, wherein the polymer comprises a polyurethane or a collagen.

14. The system of claim 1, wherein the hardenable fluid filling medium comprises a two-part part curable material that is configured to harden after mixing.

15. A system for treating an aneurysm, said system comprising:

a filling structure having an outer wall and an inner wall, a hardenable fluid filling medium, wherein the filling structure is filled with the hardenable fluid filling medium, and wherein the inner surface forms a generally tubular lumen to provide blood flow, and wherein the generally tubular lumen bifurcates at a bifurcation point, and wherein the outer wall and the inner wall extend from a first location superior of the bifurcation point to a second location inferior of the bifurcation point; and

a delivery catheter having a tubular support which can be positioned within the tubular lumen to carry the filling structure, and wherein a first longitudinal end of the system comprises a first stent, and wherein the second longitudinal end of the system comprises a second stent.

16. The system of claim 15, wherein the outer wall and the inner wall extend from a first location at a terminal superior end of the filling structure to a second location inferior of the bifurcation point.

17. The system of claim 15, wherein the outer wall and the inner wall extend from a first location superior to the bifurcation point to a second location at a terminal inferior end of the filling structure.

18. The system of claim 15, wherein the outer wall and the inner wall extend from a first location at a terminal superior end of the filling structure to a second location at a terminal inferior end of the filling structure.

19. The system of claim 15, wherein the hardenable fluid filling medium comprises a flowable polymer that is curable in situ.

20. The system of claim 19, wherein the polymer comprises a polyurethane or a collagen, and wherein the filling medium comprises a two-part part curable material configured to be hardened after mixing.