Guided filter with support wire and methods of use

• US 7,862,578 B2
• Filed: 05/21/2007
• Issued: 01/04/2011
• Est. Priority Date: 08/03/1999
• Status: Expired due to Fees

• Current Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Original Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Inventors: Tsugita, Ross S.
• Primary Examiner(s): Lucchesi; Nicholas D
• Assistant Examiner(s): LANDRY II, GERALD ERNEST
• Application Number:
  US11/751,370
• Publication Number:
  US 20070219491A1
• Time in Patent Office: 1,324 Days
• Field of Search: 604/103.04, 604/104, 604/107, 606/200
• US Class Current: 606/200
• 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 2230/0067 conical
• CPC Class Codes: A61F 2230/008 paraboloidal
• CPC Class Codes: A61M 2025/0183 Rapid exchange or monorail catheters
• CPC Class Codes: A61M 2025/09183 having tools at the distal tip
• CPC Class Codes: A61M 25/09 Guide wires
• CPC Class Codes: A61M 25/104 used for angioplasty

Abstract

A guided filter system for temporary placement of a filter in an artery or vein is disclosed. The system includes a guidewire slideable through a wire guide included in a distal region of a support wire. The support wire has an expandable filter, which is operable between a collapsed or enlarged condition. A variety of endovascular devices, including angioplasty, atherectomy, and stent-deployment catheters, are insertable over the guidewire and/or the support wire. Methods of using the guided filter system to direct and exchange endovascular devices to a region of interest, and to entrap and remove embolic material from the vessel are also disclosed.

Claims

1. A percutaneous medical device comprising:

a guidewire;

a support wire having a proximal end and a distal end;

a filter attached to the distal region of the support wire;

a wire guide attached to the distal region of the support wire, wherein the wire guide is configured to slidably receive the guidewire therethrough; and

an angioplasty catheter including a proximal end, a distal end, and a lumen therebetween, wherein the lumen is configured to slidably engage the support wire and to be advanced therealong, wherein the angioplasty catheter includes a balloon adjacent to the distal end of the angioplasty catheter.