Embolic protection device having reduced profile

• US 20070100373A1
• Filed: 11/02/2006
• Published: 05/03/2007
• Est. Priority Date: 11/02/2005
• Status: Active Grant

• Current Assignee: Cook Medical Incorporated (Cook Group Incorporated)
• Original Assignee: Cook Incorporated (Cook Group Incorporated)
• Inventors: Pal, Dharmendra, Valaie, Arman, Magnuson, Mark
• Granted Patent: US 8,216,269 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
• CPC Class Codes: A61F 2230/008 paraboloidal

Abstract

A device for capturing emboli during treatment of a stenotic lesion in a body vessel is disclosed. The device comprises a base having expanded and collapsed states, and proximal and distal portions. The distal portion has a support portion configured to deploy in the body vessel when the base is in the expanded state. The device further comprises a filter portion disposed on the distal portion of the base. The filter portion includes a lip extending to a filter body to a filter end. The filter portion is configured to engage the support portion when deployed to define an opening of the filter portion for capturing emboli. The device further comprises a collector through which the base is slideably disposed for delivery and retrieval of the device.

Claims

1. A device for capturing emboli during treatment of a stenotic lesion in a body vessel, the device comprising:

a base having an expanded state and a collapsed state, the base including proximal and distal portions, the distal portion having a support portion configured to deploy in the body vessel when the base is in the expanded state;

a filter portion disposed on the distal portion of the base, the filter portion including a lip extending to a filter body, the filter portion being configured to engage the support portion when deployed to define an opening of the filter portion for capturing emboli, the filter portion extending from the lip to a filter end; and

a collector through which the base is slideably disposed for delivery and retrieval of the device.

2. The device of claim 1 wherein the base is a tubular member.

3. The device of claim 2 further comprising a wire guide slideably disposed through the base and the filter portion for percutaneous guidance.

4. The device of claim 1 wherein the support portion includes a plurality of struts extending from the distal portion of the base to engage the body vessel.

5. The device of claim 4 wherein each of the struts has an anchor end configured to engage the body vessel when deployed.

6. The device of claim 4 wherein the support portion is expanded when deployed from the collector and is configured to collapse as the collector tube is distally moved over the struts.

7. The device of claim 1 wherein the support portion is pre-formed to a predetermined shape upon deployment from the collector tube.

8. The device of claim 1 wherein the lip is distally attached to the struts, the anchor end of each strut extending from the lip to engage the body vessel when the support portion is deployed.

9. The device of claim 1 wherein the lip is attached to the collector for reduced profile of the device.

10. The device of claim 9 wherein the lip is attached at a point on the collector tube for reduced profile of the device.

11. The device of claim 1 wherein the filter body is configured to expand and engage the body vessel when the support portion is deployed.

12. The device of claim 1 wherein the collector includes a body portion and a detachable tip portion, the base being connected to the tip portion, the base being slideably movable and configured to deploy the support portion when moved distally relative to the body portion.

13. The device of claim 1 wherein the lip of the filter portion is attached to the support portion to define the opening of the filter portion for capturing emboli when the support portion is deployed.

14. The device of claim 1 wherein the filter body of the filter portion is configured to receive the support portion when deployed, defining the opening of the filter portion for capturing emboli.

19. The assembly of claim 1 wherein the lip is attached to the collector for reduced profile of the device.

15. 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

a device for capturing emboli coaxially disposed within the balloon catheter during treatment of the stenotic lesion in the body vessel, the device comprising;

a base having an expanded state and a collapsed state, the base including proximal and distal portions, the distal portion having a support portion configured to deploy in the body vessel when the base is in the expanded state;

a filter portion disposed on the distal portion of the base, the filter portion including a lip extending to a filter body, the filter portion being configured to engage the support portion when deployed to define an opening of the filter portion for capturing emboli, the filter portion extending from the lip to a filter end; and

a collector tube through which the base is slideably disposed for delivery and retrieval of the device.

16. The assembly of claim 15 wherein the support portion includes a plurality of struts extending from the distal portion of the base to engage the body vessel.

17. The assembly of claim 16 wherein each of the struts has an anchor end configured to engage the body vessel when deployed.

18. The assembly of claim 16 wherein the support portion is expanded when deployed from the collector and is configured to collapse as the collector tube is distally moved over the struts.

20. A method for embolic protection during treatment of a stenotic lesion in a body vessel, the method comprising:

percutaneously introducing a balloon catheter in the body vessel, the 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;

disposing an embolic protection device in a collapsed state coaxially within the balloon catheter, the device comprising;

a base having an expanded state and a collapsed state, the base including proximal and distal portions, the distal portion having a support portion configured to deploy in the body vessel when the base is in the expanded state;

a filter portion disposed on the distal portion of the base, the filter portion including a lip extending to a filter body, the filter portion being configured to engage the support portion when deployed to define an opening of the filter portion for capturing emboli, the filter portion extending from the lip to a filter end; and

a collector through which the base is slideably disposed for delivery and retrieval of the device; and

deploying the device in an expanded state downstream from the stenotic lesion to capture emboli during treatment of the stenotic lesion.