Distal protection devices and methods of providing distal protection

• US 9,351,748 B2
• Filed: 03/22/2012
• Issued: 05/31/2016
• Est. Priority Date: 01/03/2005
• Status: Expired due to Fees

• Current Assignee: Crux Biomedical, Inc. (Koninklijke Philips N.V.)
• Original Assignee: Crux Biomedical, Inc. (Koninklijke Philips N.V.)
• Inventors: Johnson, Eric, Fogarty, Thomas, Arko, Frank, Elkins, Jeff, Seery, Martin
• Primary Examiner(s): Stransky, Katrina
• Application Number:
  US13/427,484
• Publication Number:
  US 20120179196A1
• Time in Patent Office: 1,531 Days
• Field of Search: 606/200, 606/194, 606/198
• US Class Current: 1/1
• CPC Class Codes: A61B 17/221 Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions surgical snare instruments A61B17/32056
• CPC Class Codes: A61F 2/01 Filters implantable into blood vessels
• CPC Class Codes: A61F 2/011 Instruments for their placement or removal
• CPC Class Codes: A61F 2002/016 made from wire-like elements
• CPC Class Codes: A61F 2002/018 made from tubes or sheets of material, e.g. by etching or laser-cutting
• 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 2230/0067 conical
• CPC Class Codes: A61F 2230/0095 Saddle-shaped
• CPC Class Codes: A61F 2250/0067 Means for introducing or releasing pharmaceutical products into the body
• CPC Class Codes: A61M 2025/0037 characterized by lumina being arranged side-by-side
• CPC Class Codes: A61M 2025/004 characterized by lumina being arranged circumferentially
• CPC Class Codes: A61M 25/0021 characterised by the form of the tubing A61M25/0054 takes precedence
• CPC Class Codes: A61M 25/007 Side holes, e.g. their profiles or arrangements; Provisions to keep side holes unblocked

Abstract

A filter and methods of use to provide distal protection during a vascular procedure is provided. The filter includes a first spiral shaped support member joined to a second spiral support member to form a crossover and to form a first generally planar support frame and a second generally planar support frame. A tether is on one of the first end or the second end and a capture structure is attached to the first support frame or the second support frame. The capture structure extends in a non-planar fashion relative to the generally planar first or second support frame to which the capture structure is attached. After use to capture debris, the filter is recovered in a manner to close while maintaining captured debris within the filter.

Claims

1. A filter for use during a procedure performed in the vasculature, comprising:

A first spiral shaped support member;

A second spiral support member joined to the first spiral shaped support member only at a first end and a second end so as to form a moveable cross over point where the first and the second support members cross;

A first generally planar support frame and a second generally planar support frame formed by the first and second support members, the first support frame extending between the first end and the movable cross over point and the second support frame extending between the movable cross over point and the second end;

A tether on one of the first end or the second end; and

A capture structure attached to the first support frame or the second support frame, and extending in a non-planar fashion relative to the generally planar first or second support frame to which the capture structure is attached.

2. The filter of claim 1 wherein the capture structure is attached to the first support frame and extends through the second support frame.

3. The filter of claim 1 wherein the capture structure is attached to the second support frame and extends though the first support frame.

4. The filter of claim 1 wherein when the filter is in use in the lumen, the capture structure is attached in the upstream support frame.

5. The filter of claim 1 wherein when the filter is in use in the lumen, the capture structure is attached in the downstream support frame.

6. The filter of claim 1 wherein when the filter is in use in the lumen a capture structure is attached in the upstream support frame and another capture structure is attached to the downstream support frame.

7. The filter of claim 1 wherein the first support frame and the second support frame are part of a multi-support frame device.

8. The filter of claim 7 wherein when the multi-support frame device is in use in the lumen the capture structure is in an upstream support frame and another capture structure is in a downstream support frame.

9. The filter of claim 1 wherein a portion of the capture structure is a sheet.

10. The filter of claim 9 wherein the sheet is a porous material suitable for distal protection.

11. The filter of claim 9 wherein the sheet has a defined shape.

12. The filter of claim 11 wherein the shape is a cone.

13. The filter of claim 12 wherein the cone has a discrete apex.

14. The filter of claim 12 wherein the cone has a rounded apex.

15. The filter of claim 12 wherein the cone has a compound apex.

16. The filter of claim 12 wherein the cone is a truncated cone.

17. The filter of claim 9 wherein a plurality of holes are formed in the sheet determine the percent open area.

18. The filter of claim 9 wherein a plurality of shapes formed in the sheet provide a filtering capability between tens of microns and hundreds of microns.

19. The filter of claim 9 wherein a plurality of shapes formed in the sheet are selected from the shapes of circular, polygonal, oval, triangular, trapezoidal or truncated conical.

20. The filter of claim 19 wherein the shapes formed in the sheet are selected to configure the filter for a distal protection application.

21. The filter of claim 19 wherein the shapes formed in the sheet have sizes that vary based on the radial orientation of the shapes within the capture structure.

22. The filter of claim 19 wherein the shapes formed in the sheet have sizes that vary based on axial orientation of the shapes within the capture structure.

23. The filter of claim 1 wherein the capture structure extends beyond either the first end or the second end.

24. The filter of claim 1 wherein a distal most portion of the capture structure extends beyond either the first end or the second end.

25. The filter of claim 1 wherein a portion of the capture structure is attached to the filter distal to the movable cross over point.

26. The filter of claim 1 wherein the tether attached to the first end or the second end where the first support frame and the second support frame are joined.

27. The filter of claim 1 further comprising:

a plurality of barbs attached to a structure used to support the capture structure.

28. The filter of claim 27 wherein the structure is the first or the second support frame.

29. The filter of claim 27 wherein when the filter is in use within the lumen the plurality of barbs will break the surface of the lumen wall.

30. The filter of claim 27 wherein when the lumen is in use within the lumen the plurality of barbs engage but do not pierce through the lumen wall.

31. The filter of claim 1 wherein the tether on the first end or the second end is attached to the first end of the second end.

32. The filter of claim 1 wherein the tether on the first end or the second end is an integral wire with the first end or the second end.

33. The filter of claim 32 wherein the integral wire is used as a guidewire.

34. The filter of claim 1 wherein the tether on the first end or the second end is attached to the first end or the second end using a snare.

35. The filter of claim 1 wherein the tether on the first end or the second end is an integral wire with the first spiral support member or the second spiral support member.