Devices and methods for the treatment of vascular defects

• US 10,617,427 B2
• Filed: 12/05/2017
• Issued: 04/14/2020
• Est. Priority Date: 09/10/2010
• Status: Active Grant

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Covidien LP (Medtronic Plc)
• Inventors: Aboytes, Maria, Rosqueta, Arturo
• Primary Examiner(s): Lynch, Robert A
• Application Number:
  US15/832,394
• Publication Number:
  US 20180125501A1
• Time in Patent Office: 861 Days
• CPC Class Codes: A61B 17/00234 for minimally invasive surgery A61B17/0218, A61B17/0469, A61B17/12013, A61B17/1285, A61B17/29, A61B17/320016 take precedence
• CPC Class Codes: A61B 17/12031 complete occlusion
• CPC Class Codes: A61B 17/12113 within an aneurysm
• 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 17/1215 comprising additional materials, e.g. thrombogenic, having filaments, having fibers, being coated
• CPC Class Codes: A61B 17/12163 having a string of elements connected to each other
• 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 2017/1205 Introduction devices
• CPC Class Codes: A61B 2017/12054 Details concerning the detachment of the occluding device from the introduction device
• CPC Class Codes: A61B 2090/3966 Radiopaque markers visible in an X-ray image
• CPC Class Codes: A61B 90/39 Markers, e.g. radio-opaque or breast lesions markers

Abstract

Devices and methods for treating vascular defects, such as, for example, balloon-type aneurysms, are described herein. In one embodiment, an apparatus includes an insertion portion and an expandable implant. The expandable implant is configured to be deployed in an aneurysm and is coupled to the insertion portion. The expandable implant has a first portion and a second portion coupled to the first portion. The expandable implant is movable between a first configuration in which the first portion and the second portion are substantially linearly aligned and a second configuration in which the second portion at least partially overlaps the first portion.

Claims

1. A method for treating an aneurysm, the method comprising:

intravascularly delivering a delivery device and an expandable implant within the delivery device to an aneurysm, the implant including;

a proximal portion configured to be removably coupled to a delivery member;

a first braid having a proximal region fixed at the proximal portion and a distal region opposite the proximal region along the length of the first braid;

a second braid having a proximal region fixed at the proximal portion and a distal region opposite the proximal region along the length of the second braid;

wherein at least one of the first braid and the second braid comprise a flattened tubular braid; and

expanding the implant to form a three-dimensional structure, wherein expanding the implant includes;

releasing the distal region of the first braid from the delivery device; and

releasing the distal region of the second braid from the delivery device before the proximal region of the first braid is released from the delivery device.

2. The method of claim 1 wherein expanding the implant includes releasing the distal region of the first braid and the distal region of the second braid at substantially the same time.

3. The method of claim 1 wherein expanding the implant includes releasing the distal region of the first braid and the distal region of the second braid at different times.

4. The method of claim 1 wherein expanding the implant includes expanding the first braid to form a first three-dimensional structure and expanding the second braid to form a second three-dimensional structure that is different than the first three-dimensional structure.

5. The method of claim 1 wherein intravascularly delivering the delivery device and the expandable implant include intravascularly delivering the delivery device and the expandable implant to a cerebral aneurysm.

6. The method of claim 1 wherein expanding the implant includes releasing the distal regions of the first braid and the second braid from the delivery device such that the distal region of the first braid is free to move away from the distal region of the second braid.

7. The method of claim 6 wherein expanding the implant includes releasing the distal region of the first braid and the distal region of the second braid at substantially the same time.

8. The method of claim 6 wherein expanding the implant includes releasing the distal region of the first braid and the distal region of the second braid at different times.

9. The method of claim 1 wherein expanding the implant includes releasing a distal terminus of the first braid and a distal terminus of the second braid from the delivery device such that the distal terminus of the first braid is free to move away from the distal terminus of the second braid.

10. The method of claim 1 wherein expanding the implant includes releasing a distal terminus of the first braid and a distal terminus of the second braid from the delivery device such that the distal terminus of the first braid moves away from the distal terminus of the second braid.

11. The method of claim 1 wherein both the first braid and the second braid are flattened tubular braids.

12. A method for treating an aneurysm, the method comprising:

intravascularly delivering a delivery device and an expandable implant within the delivery device to an aneurysm, the implant including;

a proximal portion configured to be removably coupled to a delivery member;

a first mesh having a proximal region fixed at the proximal portion and a distal region opposite the proximal region along the length of the first mesh;

a second mesh having a proximal region fixed at the proximal portion and a distal region opposite the proximal region along the length of the second mesh;

wherein at least one of the first mesh and the second mesh comprise a mesh formed of a tubular mesh flattened along at least a portion of its longitudinal axis such that opposing sidewalls of the tubular mesh are urged towards one another; and

expanding the implant such that the first and second meshes together form a predetermined three-dimensional structure, wherein expanding the implant includes releasing the implant from the delivery device.

13. The method of claim 12 wherein expanding the implant includes releasing the distal region of the first mesh and the distal region of the second mesh at substantially the same time.

14. The method of claim 12 wherein expanding the implant includes releasing the distal region of the first mesh and the distal region of the second mesh at different times.

15. The method of claim 12 wherein expanding the implant includes expanding the first mesh to form a first three-dimensional structure and expanding the second mesh to form a second three-dimensional structure that is different than the first three-dimensional structure.

16. The method of claim 12 including delivering the delivery device and the expandable implant to a cerebral aneurysm.

17. The method of claim 12 wherein expanding the implant includes releasing the distal regions of the first mesh and the second mesh from the delivery device such that the distal region of the first mesh is free to move away from the distal region of the second mesh.