FLEXIBLE TUBE FOR CARTRIDGE FILTER

• US 20090054907A1
• Filed: 10/29/2008
• Published: 02/26/2009
• Est. Priority Date: 02/24/2003
• Status: Active Grant

• Current Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Original Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Inventors: Eskuri, Alan D., Lowe, Brian J.
• Granted Patent: US 7,762,403 B2
• Time in Patent Office: Days
• US Class Current: 606/127
• CPC Class Codes: A61F 2/011 Instruments for their placement or removal
• 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 2230/0008 elliptical or oval
• CPC Class Codes: A61F 2230/005 Rosette-shaped, e.g. star-shaped
• CPC Class Codes: A61F 2230/008 paraboloidal

Abstract

Embolic protection filtering devices and methods of making and using the same. The present invention may include an embolic protection filtering device including a filter cartridge that is slidable over medical devices, for example, guidewires. The filter cartridge may have a filter coupled thereto and may have desirable flexibility and trackability characteristics.

Claims

1. A distal protection filter assembly, comprising:

a guidewire having a proximal end and a distal end;

a tubular member having a proximal end and a distal end, the tubular member having a notch defining a helical groove;

a distal stop on the guidewire limiting distal movement of the tubular member;

a filter having a proximal end and a distal end, the filter disposed on the tubular member, the filter proximal end movable relative to the guidewire.

2. The assembly of claim 1 wherein the groove extends along only a portion of the tubular member.

3. The assembly of claim 1 wherein the groove has a first pitch and a second pitch, wherein the second pitch is distal of the first pitch and relatively close as compared with the first pitch.

4. The assembly of claim 1 wherein the filter distal end is fixed longitudinally relative to the tubular member.

5. The assembly of claim 1 further comprising a proximal stop on the guidewire limiting proximal movement of the tubular member on the guidewire;

6. The assembly of claim 1 wherein the filter is disposed over the helical groove.

7. The assembly of claim 1 wherein the filter is disposed around the tubular member.

8. The assembly of claim 1 wherein the tubular member distal end extends distally of the filter distal end.

9. The assembly of claim 1 wherein the tubular member proximal end extends proximally of the filter proximal end.

10. The assembly of claim 1 wherein the notch extends both distally and proximally of the filter distal end.