EMBOLIC PROTECTION SYSTEM

• US 20070060946A1
• Filed: 09/21/2006
• Published: 03/15/2007
• Est. Priority Date: 03/05/2002
• Status: Abandoned Application

• Current Assignee: Salviac Ltd. (Abbott Laboratories)
• Original Assignee: Salviac Ltd. (Abbott Laboratories)
• Inventors: Brady, Eamon, Neilan, John, Tierney, Morgan, Keegan, Martin, Vale, David, Casey, Brendan
• Application Number:
  US11/534,004
• Publication Number:
  US 20070060946A1
• Time in Patent Office: Days
• US Class Current: 606/200
• 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: A61B 2017/22035 for retrieving or repositioning foreign objects
• CPC Class Codes: A61B 2017/2212 having a closed distal end, e.g. a loop
• CPC Class Codes: A61F 2/0105 Open ended, i.e. legs gathered only at one side
• CPC Class Codes: A61F 2/0108 Both ends closed, i.e. legs gathered at both ends
• CPC Class Codes: A61F 2/011 Instruments for their placement or removal
• CPC Class Codes: A61F 2/013 Distal protection devices, i.e. devices placed distally in combination with another endovascular procedure, e.g. angioplasty or stenting
• CPC Class Codes: A61F 2/958 Inflatable balloons for placing stents or stent-grafts
• 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 2230/0067 conical
• CPC Class Codes: A61F 2230/008 paraboloidal
• CPC Class Codes: A61M 25/104 used for angioplasty

Abstract

An embolic protection filter system comprises a collapsible embolic protection filter 62 having a collapsed configuration for delivery of the filter, and a deployed configuration and a temporary lumen defining member 60. The lumen defining member 60 is used for loading a filter-containing delivery catheter 63 onto a guidewire 65. After loading, the member 60 can be removed by pulling on a tab 61.

Claims

1. An embolic protection filter having an inlet end and an outlet end, the inlet end having one or more inlet openings sized to allow blood and embolic material enter the filter, and the outlet end of the filter having a plurality of outlet openings sized to allow through passage of blood but to retain undesired embolic material within the filter;

the filter having a guidewire aperture for passing the filter over a guidewire; and

the filter comprising a seal to seal the guidewire aperture.

2. A filter as claimed in claim 1, wherein the seal is self-closing.

3. A filter as claimed in claim 1, wherein the seal is located at a proximal end of the filter, and/or at a distal end of the filter.

4. A filter as claimed in claim 1, wherein the filter has a tubular member extending from the guidewire aperture to define a guidewire lumen through the tubular member.

5. A filter as claimed in claim 4, wherein the tubular member extends through at least part of the filter.

6. A filter as claimed in claim 4, wherein the tubular member is radially offset from the longitudinal axis of the filter.

7. A filter as claimed in claim 1, wherein the seal is an annular member around the guidewire aperture, the annular member being closable down to seal the guidewire aperture.

8. A filter as claimed in claim 7, wherein the annular member is a tube

9. A filter as claimed in claim 7, wherein the annular member comprises a soft membrane.

10. A filter as claimed in claim 7, wherein the annular member comprises two or more circumferentially overlapping flaps.