Vascular remodeling device

• US 9,351,859 B2
• Filed: 12/06/2011
• Issued: 05/31/2016
• Est. Priority Date: 12/06/2010
• Status: Active Grant

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Covidien LP (Medtronic Plc)
• Inventors: Cam, Anh, Losordo, Michael Louis, Ma, Jianlu, Nguyen, Luong, Shrivastava, Sanjay, Wainwright, John, Zhao, Xiaoling
• Primary Examiner(s): Nguyen, Tuan V
• Assistant Examiner(s): EVERAGE, KEVIN D
• Application Number:
  US13/312,887
• Publication Number:
  US 20120143317A1
• Time in Patent Office: 1,638 Days
• US Class Current: 1/1
• CPC Class Codes: A61B 17/12118 for positioning in conjunction with a stent
• CPC Class Codes: A61B 17/1214 Coils or wires
• CPC Class Codes: A61B 17/12145 having a pre-set deployed three-dimensional shape methods of manufacturing A61B2017/00526
• CPC Class Codes: A61B 17/12168 having a mesh structure A61B17/1214 takes precedence
• CPC Class Codes: A61B 17/12172 having a pre-set deployed three-dimensional shape methods of manufacturing A61B2017/00526
• CPC Class Codes: A61B 2017/00867 shape memory effect
• CPC Class Codes: A61B 2017/1209 detachable by electrical current or potential, e.g. electroactive polymer
• CPC Class Codes: A61F 2/90 characterised by a net-like or mesh-like structure
• CPC Class Codes: A61F 2/95 Instruments specially adapted for placement or removal of 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 2002/823 Stents, different from stent-grafts, adapted to cover an aneurysm
• CPC Class Codes: A61F 2220/005 using adhesives
• CPC Class Codes: A61F 2220/0058 soldered or brazed or welded
• CPC Class Codes: A61F 2230/0034 D-shaped
• CPC Class Codes: A61F 2230/0054 V-shaped
• CPC Class Codes: A61F 2230/0069 cylindrical
• CPC Class Codes: A61F 2230/0093 Umbrella-shaped, e.g. mushroom-shaped

Abstract

Described herein are vascular remodeling devices that include a proximal section, an intermediate section, and a distal section. During deployment, the proximal section can expand from a compressed delivery state to an expanded state and anchors the device in an afferent vessel of a bifurcation. The distal section expands from the compressed delivery state to an expanded state that may be substantially planar, approximately semi-spherical, umbrella shaped, or reverse umbrella shaped. The distal section is positioned in a bifurcation junction across the neck of an aneurysm or within an aneurysm. The intermediate section allows perfusion to efferent vessels. Before or after the device is in position, embolic material may be used to treat the aneurysm. The distal section can act as a scaffolding to prevent herniation of the embolic material. The device can be used for clot retrieval with integral distal embolic protection.

Claims

1. An intraluminal device comprising:

a proximal section configured to anchor in an afferent vessel;

an intermediate section comprising a plurality of struts configured to allow perfusion to efferent vessels; and

a distal section configured to act as a scaffolding to inhibit herniation of objects out of a neck of a bifurcation aneurysm, the distal section forming a circumferentially continuous structure with a plurality of undulating filaments;

wherein each of the plurality of struts is coupled at a coupling to the distal section at a region between a proximal end of the distal section and a distal end of the distal section;

wherein the distal section is biased to transition from a first configuration to a second configuration such that the distal end of the distal section moves radially inwardly and retracts proximally relative to the proximal end of the distal section when released from a catheter.

2. The device of claim 1, wherein the proximal section comprises a hybrid cell design comprising open cells and closed cells.

3. The device of claim 1, wherein the proximal section comprises a plurality of repeating unit cells.

4. The device of claim 3, wherein the distal section comprises at least one said unit cell and at least partially forms a semi-sphere, umbrella, or reverse umbrella in an expanded state.

5. The device of claim 1, wherein the proximal section comprises a plurality of woven filaments.

6. The device of claim 1, wherein the proximal section comprises at least one tapered portion.

7. The device of claim 1, wherein the proximal section has a length between about 5 mm and about 30 mm.

8. The device of claim 1, wherein the proximal section has a length between about 10 mm and about 20 mm.

9. The device of claim 1, wherein the intermediate section has a length between about 6 mm and about 10 mm.

10. The device of claim 1, wherein the first configuration forms a cylindrical shape and the second configuration forms a planar shape, and wherein the cylindrical shape has an inner surface and an outer surface, and each of the inner surface and the outer surface of the cylindrical shape define a respective opposing proximal and distal side of the planar shape in the second configuration.

11. The device of claim 1, wherein the distal section has a smallest inner cross-sectional dimension in the second configuration that is less than a smallest inner cross-sectional dimension of the proximal section.

12. The device of claim 1, wherein, while transitioning from the first configuration to the second configuration, the distal end moves to an axial location aligned with the coupling.

13. The device of claim 1, wherein, while transitioning from the first configuration to the second configuration, the proximal end moves to an axial location aligned with the coupling.

14. The device of claim 1, wherein the distal section pivots about the coupling when transitioning from the first configuration to the second configuration.

15. The device of claim 1, wherein, while transitioning from the first configuration to the second configuration, (i) the distal end of the distal section is configured to move radially inwardly and proximally relative to the coupling and (ii) the proximal end of the distal section is configured to move radially outwardly and distally relative to the coupling.

16. The device of claim 15, wherein, while transitioning from the first configuration to the second configuration, the proximal end moves radially outwardly to define, in the second configuration, an outermost cross-sectional dimension that is greater than an outermost cross-sectional dimension of the proximal section.

17. The device of claim 15, wherein, while transitioning from the first configuration to the second configuration, the distal end moves radially inwardly to define, in the second configuration, an innermost cross-sectional dimension that is less than an innermost cross-sectional dimension of the proximal section.

18. The device of claim 15, wherein, when transitioned from the first configuration to the second configuration, the distal end defines a first lumen sized smaller than a second lumen defined by the proximal section.

19. The device of claim 15, wherein the distal section pivots about the coupling when transitioning from the first configuration to the second configuration.

20. The device of claim 1, wherein the undulating filaments are woven.

21. The device of claim 1, wherein the proximal section and the distal section are integrally cut from a tube or a sheet.

22. The device of claim 1, wherein the proximal section and the distal section are comprised of the same material.

23. The device of claim 1, wherein the distal section comprises a covering.