EMBOLIC PROTECTION FILTER WITH ENHANCED STABILITY WITHIN A VESSEL

• US 20070265655A1
• Filed: 05/09/2006
• Published: 11/15/2007
• Est. Priority Date: 05/09/2006
• Status: Abandoned Application

• Current Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Original Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Inventors: Renati, Richard, Stivland, Timothy
• Application Number:
  US11/382,423
• Publication Number:
  US 20070265655A1
• Time in Patent Office: Days
• US Class Current: 606/200
• CPC Class Codes: A61F 2/01 Filters implantable into blood vessels
• CPC Class Codes: A61F 2002/018 made from tubes or sheets of material, e.g. by etching or laser-cutting
• CPC Class Codes: A61F 2220/0016 with sharp anchoring protrusions, e.g. barbs, pins, spikes
• CPC Class Codes: A61F 2230/0008 elliptical or oval
• CPC Class Codes: A61F 2230/001 Figure-8-shaped, e.g. hourglass-shaped
• CPC Class Codes: A61F 2230/008 paraboloidal

Abstract

Embolic protection filtering devices and methods for making and using the same. An example filtering device includes a filter wire, a filter including a support member coupled to the filter wire, and a filter membrane coupled to the support member. A traction member may be coupled to the support member. The traction member may help to stabilize the longitudinal position of the filtering device within a body lumen.

Claims

1. An embolic protection filtering device, comprising:

an elongate shaft;

a filter coupled to the shaft, the filter including a support member disposed about the shaft and a strut region extending between the support member and the shaft;

a filter membrane coupled to the support member, the filter membrane having a plurality of openings defined therein; and

a traction member coupled to the support member.

2. The filtering device of claim 1, wherein the traction member includes a coating disposed on the support member.

3. The filtering device of claim 2, wherein the coating includes a micro-abrasive.

4. The filtering device of claim 2, wherein the coating includes a hydrophobic polymer.

5. The filtering device of claim 2, wherein the coating includes an adhesive.

6. The filtering device of claim 1, wherein the traction member includes a micro-abrasive formed on the filter.

7. The filtering device of claim 6, wherein the micro-abrasive is formed on the support member.

8. The filtering device of claim 6, wherein the micro-abrasive includes one or more barbs.

9. The filtering device of claim 6, wherein the micro-abrasive includes one or more spikes.

10. The filtering device of claim 6, wherein the micro-abrasive includes one or more teeth.

11. The filtering device of claim 6, wherein the micro-abrasive includes a pharmaceutical substance.

12. The filtering device of claim 1, wherein the traction member includes a longitudinal extension of the support member.

13. The filtering device of claim 1, wherein the traction member includes a buckling extension member that is attached to the support member and extends proximally therefrom.

14. The filtering device of claim 13, wherein the buckling extension member has a substantially rounded shape.

15. The filtering device of claim 13, wherein the buckling extension member has a substantially flared shape.

16. The filtering device of claim 13, wherein the buckling extension member is configured to shift between a first non-buckled configuration and a second buckled configuration.

17. The filtering device of claim 16, wherein the buckling extension member is adapted to shift between the non-buckled configuration and the buckled configuration when force is applied to the filter wire.

18. The filtering device of claim 16, wherein the buckling extension member includes one or more ridges when buckling extension member is in the buckled configuration.

19. The filtering device of claim 16, wherein the buckling extension member is disposed between the support member and a second support member.

20. An embolic protection filtering device, comprising:

an elongate filter wire;

a filter coupled to the filter wire, the filter including a support member, a strut extending between the support member and the filter wire, and a filter membrane coupled to the support member and extending therefrom; and

a position-stabilizing traction member coupled to the support member, the traction member being configured to secure the position of the filtering device when the filtering device is deployed in a target region.

21. The filtering device of claim 20, wherein the traction member includes a coating disposed on the support member.

22. The filtering device of claim 20, wherein the traction member includes a micro-abrasive formed on the support member.

23. The filtering device of claim 22, wherein the micro-abrasive includes a pharmaceutical substance.

24. The filtering device of claim 20, wherein the traction member includes a longitudinal extension of the support member.

25. The filtering device of claim 20, wherein the traction member includes a buckling extension member that is attached to the support member and extends proximally therefrom.

26. The filtering device of claim 25, wherein the buckling extension member has a substantially rounded shape.

27. The filtering device of claim 25, wherein the buckling extension member has a substantially flared shape.

28. The filtering device of claim 25, wherein the buckling extension member is configured to shift between a first non-buckled configuration and a second buckled configuration.

29. The filtering device of claim 28, wherein the buckling extension member is adapted to shift between the non-buckled configuration and the buckled configuration when force is applied to the filter wire.

30. The filtering device of claim 28, wherein the buckling extension member includes one or more ridges when buckling extension member is in the buckled configuration.

31. An embolic protection filtering device, comprising:

an elongate filter wire;

a filter coupled to the filter wire, the filter including a support member, a strut extending between the support member and the filter wire, and a filter membrane coupled to the support member and extending therefrom; and

means for longitudinally stabilizing the position of the filtering device, wherein the means for longitudinally stabilizing the position of the filtering device is coupled to the support member.