GUIDED FILTER WITH SUPPORT WIRE AND METHODS OF USE

• US 20070219491A1
• Filed: 05/21/2007
• Published: 09/20/2007
• Est. Priority Date: 08/03/1999
• Status: Active Grant

• Current Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Original Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Inventors: Tsugita, Ross
• Granted Patent: US 7,862,578 B2
• Time in Patent Office: Days
• US Class Current: 604/104
• 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 method for deploying a percutaneous medical instrument, comprising the steps of:

providing a guidewire and a support wire, the support wire having a distal region, a wire guide mounted on the distal region, and an expandable filter mounted on the distal region;

advancing the guidewire into a region of interest within a vessel;

advancing the support wire along the guidewire with the wire guide of the support wire engaging the guidewire;

expanding the filter downstream of the region of interest; and

advancing the percutaneous medical instrument over the support wire and positioning the medical instrument within the region of interest.