Guided filter with support wire and methods of use

• US 8,231,651 B2
• Filed: 11/23/2010
• Issued: 07/31/2012
• 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): Ho, Jackie
• Assistant Examiner(s): LANDRY II, GERALD ERNEST
• Application Number:
  US12/952,590
• Publication Number:
  US 20110066177A1
• Time in Patent Office: 616 Days
• Field of Search: 604 9601-10304, 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. An endovascular deployment system for a percutaneous medical device comprising:

a guidewire;

a support member having a proximal region, a distal region, and an intermediate region therebetween;

a guide associated with the distal region of the support member, said guide including a lumen configured to slideably receive the guidewire;

a mesh located substantially proximal of the guide and adapted to be advanced over the guidewire by the support member, said mesh having a first radially collapsed configuration and a second radially expanded configuration,

wherein the mesh is fixedly attached to an expansion frame, said expansion frame comprising a plurality of struts, a portion of each of said struts being compressed by a sheath when the mesh is in the first radially collapsed configuration and not being compressed by the sheath when the mesh is in the second radially expanded configuration;

further wherein the sheath includes a port in a distal region adapted to receive the guidewire, said sheath being configured such that the guidewire and the sheath may be withdrawn proximately from the mesh leaving the mesh disposed in the body.

2. The endovascular deployment system of claim 1, wherein the guidewire is slideably received by the guide.

3. The endovascular deployment system of claim 1, wherein the support member is slideably received by the sheath.

4. The endovascular deployment system of claim 1, wherein the mesh is a stent.

5. The endovascular deployment system of claim 1, wherein the plurality of struts are structurally distinguishable from the expansion frame.