Embolic protection device having reduced profile

• US 8,216,269 B2
• Filed: 11/02/2006
• Issued: 07/10/2012
• Est. Priority Date: 11/02/2005
• Status: Active Grant

• Current Assignee: Cook Medical Incorporated (Cook Group Incorporated)
• Original Assignee: Cook Medical Incorporated (Cook Group Incorporated)
• Inventors: Magnuson, Mark A., Valaie, Arman H., Pal, Dharmendra
• Primary Examiner(s): Sonnett, Kathleen
• Assistant Examiner(s): TANNER, JOCELIN C
• Application Number:
  US11/591,880
• Publication Number:
  US 20070100373A1
• Time in Patent Office: 2,077 Days
• Field of Search: 606/200, 606/194, 606/114, 606/159, 606/127, 604/96.01, 604/509
• 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 including proximal and distal portions, the distal portion having a support portion having an expanded state and a collapsed state, the support portion configured to deploy in the body vessel when in the expanded state, the support portion including a plurality of struts extending from the distal portion of the base, each strut having a first end attached to the distal portion of the base and a second anchor end configured to engage the body vessel, each strut extending distally from the first end to the second anchor end;

a filter portion disposed on the distal portion of the base, the filter portion including a lip distally attached to the struts and 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 struts extending distally and radially outwardly past the lip to the second anchor ends to engage the body vessel when the support portion is in the expanded state, the struts extending distally but not radially outwardly past the lip to the second anchor ends when the support portion is in the collapsed state, the filter portion extending from the lip to a filter end; and

a collector comprising a tubular body portion through which the base is slideably disposed for delivery and retrieval of the device, the tubular body portion having a proximal end and a distal end, wherein the base is configured to deploy the support portion from the distal end of the tubular body portion when the base is moved distally relative to the tubular body portion, and wherein the support portion is configured to self-expand into the expanded state when the support portion is deployed from the distal end of the tubular body portion;

wherein the distal portion of the base extends distally within the support portion and the filter portion through the filter end, the filter end being attached to the distal portion of the base, the distal portion of the base including an enclosed portion enclosed by the support portion and the filter portion between the first ends of the struts and the filter end, the enclosed portion of the base not including a radially expandable balloon.

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 is configured to collapse as the tubular body portion is distally moved over the struts.

5. The device of claim 1 wherein the support portion is pre-formed to a predetermined shape upon deployment from the tubular body portion.

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

7. The device of claim 1 wherein the collector further comprises a detachable tip portion, the base being connected to the tip portion.

8. 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.

9. 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 including proximal and distal portions, the distal portion having a support portion having an expanded state and a collapsed state, the support portion configured to deploy in the body vessel when in the expanded state, the support portion including a plurality of struts extending from the distal portion of the base, each strut having a first end attached to the distal portion of the base and a second anchor end, each strut extending distally from the first end to the second anchor end;

a filter portion disposed on the distal portion of the base, the filter portion including a lip distally attached to the struts and 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, wherein each strut extends from the lip to the second anchor end, the struts being configured to extend distally and radially outwardly past the lip to the second anchor ends to engage the body vessel when the support portion is in the expanded state, the struts being configured to extend distally but not radially outwardly past the lip to the second anchor ends when the support portion is in the collapsed state; and

a collector tube through which the base is slideably disposed for delivery and retrieval of the device, the collector tube having a proximal end and a distal end, wherein the base is configured to deploy the support portion from the distal end of the collector tube when the base is moved distally relative to the collector tube, and wherein the support portion is configured to self-expand into the expanded state when the support portion is deployed from the distal end of the collector tube;

wherein the distal portion of the base extends distally within the support portion and the filter portion through the filter end, the filter end being attached to the distal portion of the base, the distal portion of the base including an enclosed portion enclosed by the support portion and the filter portion between the first ends of the struts and the filter end, the enclosed portion of the base not including a radially expandable balloon.

10. The assembly of claim 9 wherein the support portion is configured to collapse as the collector tube is distally moved over the struts.