Vascular filters, deflectors, and methods

• US 10,449,028 B2
• Filed: 01/05/2017
• Issued: 10/22/2019
• Est. Priority Date: 04/22/2015
• Status: Active Grant

• Current Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Original Assignee: Claret Medical, Inc. (Boston Scientific Corporation)
• Inventors: Purcell, Cameron Paul, Fifer, Daniel Wayne
• Primary Examiner(s): Shi, Katherine M
• Application Number:
  US15/399,470
• Publication Number:
  US 20170112609A1
• Time in Patent Office: 1,020 Days
• Field of Search: 606191, 606194, 606198, 606200, 623 111
• CPC Class Codes: A61B 2018/00351 Heart
• CPC Class Codes: A61F 2/013 Distal protection devices, i.e. devices placed distally in combination with another endovascular procedure, e.g. angioplasty or stenting
• CPC Class Codes: A61F 2/2427 Devices for manipulating or deploying heart valves during implantation
• CPC Class Codes: A61F 2002/016 made from wire-like elements
• CPC Class Codes: A61F 2230/0006 circular
• CPC Class Codes: A61F 2230/0015 Kidney-shaped, e.g. bean-shaped
• CPC Class Codes: A61F 2230/0019 rectangular
• CPC Class Codes: A61F 2230/0067 conical
• CPC Class Codes: A61F 2250/006 modular

Abstract

Vascular filters and deflectors and methods for filtering bodily fluids. A blood filtering assembly can capture embolic material dislodged or generated during an endovascular procedure to inhibit or prevent the material from entering the cerebral vasculature. A blood deflecting assembly can deflect embolic material dislodged or generated during an endovascular procedure to inhibit or prevent the material from entering the cerebral vasculature.

Claims

1. An embolic material protection device configured to inhibit embolic material from entering cerebral vasculature through a left vertebral artery, the device comprising:

an outer sheath;

an inner member radially inward of the outer sheath, the inner member comprising a guidewire lumen, the inner member trackable over a guidewire; and

a self-expanding filter assembly radially between the outer sheath and the inner member, the self-expanding filter assembly being deployable out of the outer sheath by at least one of proximally retracting the outer sheath and distally advancing the self-expanding filter assembly, the self-expanding filter assembly comprising;

a frame; and

a filter element coupled to the frame, the inner member longitudinally movable independent of the self-expanding filter assembly and the outer sheath,

wherein the self-expanding filter assembly further comprises;

a filter wire;

a guide tube proximal to the filter element, the guide tube coupled to the frame; and

a barrel proximal to the guide tube, the barrel coupled to the filter wire and the frame.

2. The device of claim 1, wherein the self-expanding filter assembly comprises:

a filter wire; and

a crimp tube, the crimp tube coupled to the filter wire by a first crimp, the crimp tube coupled to the frame by a second crimp longitudinally offset from the first crimp.

3. The device of claim 1, wherein the self-expanding filter assembly comprises:

a filter wire; and

a guide tube coupled to the filter wire and the frame, the guide tube comprising a chamfered proximal end.

4. The device of claim 1, wherein the self-expanding filter assembly comprises:

a deployment tube;

a barrel coupled to the deployment tube; and

a radiopaque ring, the barrel coupled the frame by the radiopaque ring.

5. The device of claim 1, wherein the self-expanding filter assembly comprises:

a deployment tube;

a radiopaque ring coupled to the deployment tube; and

the frame.

6. The device of claim 1, wherein the self-expanding filter assembly is configured to be distal-facing.

7. The device of claim 1, wherein the self-expanding filter assembly is configured to be proximal-facing.

8. The device of claim 1, wherein the inner member comprises an atraumatic distal tip.

9. The device of claim 1, further comprising an arterial pressure monitoring device in fluid communication with one of a lumen of the outer sheath and the guidewire lumen of the inner member.

10. A kit comprising:

the device of claim 1; and

a filtering device configured to be positioned in an innominate artery and a left common carotid artery.

11. An embolic material protection device configured to inhibit embolic material from entering cerebral vasculature through a left vertebral artery, the device comprising:

an outer sheath;

an inner member radially inward of the outer sheath, the inner member comprising a lumen; and

a filter assembly radially between the outer sheath and the inner member, the filter assembly being deployable out of the outer sheath, the filter assembly comprising;

a frame; and

a filter element coupled to the frame, the inner member longitudinally movable independent of the filter assembly and the outer sheath,

wherein the filter assembly further comprises;

a filter wire;

a guide tube proximal to the filter element, the guide tube coupled to the frame; and

a barrel proximal to the guide tube, the barrel coupled to the filter wire and the frame.

12. The device of claim 11, wherein the filter assembly comprises:

a filter wire; and

a coupling structure coupled to the filter wire and the frame.

13. The device of claim 12, wherein the coupling structure comprises a chamfered proximal end.

14. The device of claim 11, wherein the filter assembly comprises:

a deployment tube;

a coupling structure coupled to the deployment tube; and

the frame.

15. The device of claim 11, wherein the filter assembly is configured to be distal-facing.

16. The device of claim 11, wherein the filter assembly is configured to be proximal-facing.

17. The device of claim 11, wherein the inner member comprises an atraumatic distal tip.

18. The device of claim 11, further comprising an arterial pressure monitoring device in fluid communication with one of a lumen of the outer sheath and a guidewire lumen of the inner member.

19. A kit comprising:

the device of claim 11; and

a filtering device configured to be positioned in an innominate artery and a left common carotid artery.