Embolic protection device

• US 20070078481A1
• Filed: 09/28/2006
• Published: 04/05/2007
• Est. Priority Date: 10/04/2005
• Status: Active Grant

• Current Assignee: Cook Medical Incorporated (Cook Group Incorporated)
• Original Assignee: Cook Incorporated (Cook Group Incorporated)
• Inventors: Valaie, Arman, Magnuson, Mark
• Granted Patent: US 8,182,508 B2
• Time in Patent Office: Days
• US Class Current: 606/200
• CPC Class Codes: A61F 2/0108 Both ends closed, i.e. legs gathered at both ends
• CPC Class Codes: A61F 2002/018 made from tubes or sheets of material, e.g. by etching or laser-cutting
• CPC Class Codes: A61F 2230/0006 circular
• CPC Class Codes: A61F 2230/0067 conical

Abstract

An embolic protection device including a core wire and a basket is disclosed. The basket includes struts and a filter portion formed from a cannula. The struts extend from a first end of the basket to the second end of the basket. The filter portion extends from the struts and is formed unitarily therewith. The filter portion extends between a middle portion of the basket and the second end of the basket and includes openings in the cannula configured to allow the passage of blood cells therethrough.

Claims

1. An embolic protection device for use in a vessel, the embolic protection device comprising:

a core wire; and

a cannula attached to the core wire and extending proximally about the core wire, the cannula forming a basket portion including a plurality of struts and a filter portion, the filter portion having a plurality of openings formed in the cannula, the basket portion being movable between an expanded and collapsed state.

2. The embolic protection device according to claim 1, wherein the plurality of struts cooperate to form a tubular portion located about the core wire distal the basket portion.

3. The embolic protection device according to claim 1, wherein the plurality of struts are biased into the expanded state.

4. The embolic protection device according to claim 1, wherein the core wire is slidable relative to the plurality of struts to force the basket into the collapsed state.

5. The embolic protection device according to claim 1, wherein the plurality of openings form a plurality of expandable elements in the filter portion.

6. The embolic protection device according to claim 5, wherein the plurality of expandable elements are sinusoidal in shape.

7. The embolic protection device according to claim 1, wherein the openings are configured to allow passage of blood cells therethrough and prevent passage of emboli.

8. The embolic protection device according to claim 1, further comprising a floppy tip attached to the second end.

9. The embolic protection device according to claim 1, further comprising a tubular portion attached to the second end, the tubular portion being configured to receive a wire guide through the tubular portion.

10. The embolic protection device according to claim 1, wherein the plurality of struts extend helically between a first end and a middle portion of the basket, the middle portion extending perpendicular to the core wire.

11. The embolic protection device according to claim 1, wherein a plurality of struts extend helically between a first and second end of the basket.

12. The embolic protection device according to claim 1, wherein the cannula is formed of a shape memory material.

13. The embolic protection device according to claim 1, wherein a middle portion of the basket is configured to provide a radial force sealing the filter portion against an inner wall of the vessel, the middle portion extending perpendicular to the core wire.

14. An embolic protection device for use in a vessel, the embolic protection device comprising:

a core wire; and

a cannula attached to the core wire and extending proximally about the core wire, the cannula forming a basket portion including a plurality of struts and a filter portion, the filter portion having a plurality of openings formed in the cannula, the basket portion being movable between an expanded and collapsed state;

wherein struts extend helically between the first and second end of the basket, and a middle portion of the basket being biased to provide a radial force sealing the filter portion against an inner wall of the vessel.

15. The embolic protection device according to claim 14, wherein the plurality of struts cooperate to form a tubular portion located about the core wire distal the basket portion.

16. The embolic protection device according to claim 14, wherein the plurality of struts are biased into the expanded state.

17. The embolic protection device according to claim 14, wherein the core wire is slidable relative to the struts to force the basket into the collapsed state.

18. The embolic protection device according to claim 14, wherein the plurality of openings form a plurality of expandable elements in the filter portion.

19. The embolic protection device according to claim 14, wherein the cannula is formed of a shape memory material.

20. An embolic protection assembly for capturing emboli during treatment of a stenotic lesion in a body vessel, the assembly comprising:

a balloon catheter having a tubular body portion and an expandable balloon attached to and in fluid communication with the tubular body portion for angioplasty at the stenotic lesion, the expandable balloon having distal and proximal portions; and

an embolic protection device coaxially disposed within the balloon catheter during treatment of the stenotic lesion in the body vessel, the device comprising;

a core wire; and

a cannula attached to the core wire and extending proximally about the core wire, the cannula forming a basket portion including a plurality of struts and a filter portion, the filter portion having a plurality of openings formed in the cannula, the basket portion being movable between an expanded and collapsed state.