Temporary vascular filter, guide wire

• US 20050177187A1
• Filed: 04/05/2005
• Published: 08/11/2005
• Est. Priority Date: 11/03/1997
• Status: Abandoned Application

• Current Assignee: C.R. Bard, Inc. (Becton, Dickinson & Co)
• Original Assignee: C.R. Bard, Inc. (Becton, Dickinson & Co)
• Inventors: Gray, William, Gambale, Richard A.
• Application Number:
  US11/100,034
• Publication Number:
  US 20050177187A1
• Time in Patent Office: Days
• US Class Current: 606/200
• 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 2/012 Multiple filtering units
• 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 2002/016 made from wire-like elements
• 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 2230/0021 square
• CPC Class Codes: A61F 2230/005 Rosette-shaped, e.g. star-shaped
• CPC Class Codes: A61F 2230/0067 conical
• CPC Class Codes: A61F 2230/0086 Pyramidal, tetrahedral, or wedge-shaped
• CPC Class Codes: A61F 2230/0093 Umbrella-shaped, e.g. mushroom-shaped
• CPC Class Codes: A61F 2230/0097 Harpoon-shaped
• CPC Class Codes: A61M 2025/09183 having tools at the distal tip
• CPC Class Codes: A61M 25/09 Guide wires
• CPC Class Codes: Y10T 29/49604 Filter
• CPC Class Codes: Y10T 29/49801 Shaping fiber or fibered material

Abstract

A vascular filter guide wire is disclosed for directing precision placement of a catheter proximate a blood vessel lesion and filtering particulate matter dislodged by treatment of the vessel. The guide wire includes an actuating mechanism, an elongated flexible core wire having a proximal end mounted to the actuating mechanism and a distal end for insertion through a vasculature to a position downstream of the restriction. A tubular flexible shaft is slidably disposed telescopically along the core wire and includes a proximal portion affixed to the actuating mechanism in movable relation to the core wire. The guide wire includes a collapsible filter at its proximal end to the distal portion of the shaft and, at its distal end, to the core wire. The filter deploys radially in response to axial movement of the core wire relative to the shaft so that it can trap particulate matter arising from treatment of the lesion.

Claims

1-32. -32. (canceled)

33. A catheter system for treating a blood vessel lesion within a vasculature, said catheter system including:

a vascular filter guide wire being insertable and steerable through said vasculature to a position downstream of said lesion and being in contact with said vasculature during insertion, said guide wire including a core wire and a tubular flexible shaft slidably disposed along said core wire, said shaft having a proximal portion and said core wire having a proximal portion, said catheter system including;

a catheter having a lesion treatment device;

said guide wire being capable of directing said catheter to said lesion, said guide wire including a collapsible filter for manual deployment downstream of said catheter to trap particulate matter arising from the treatment of said lesion, said filter having a proximal end and a distal end, wherein said filter proximal end is connected to said shaft and said filter distal end is connected to said core wire and said manual deployment of the filter occurs based on axial movement of said core wire relative to said shaft in order to compress to said filter; and

a deployment mechanism including;

a base formed with a passage for confining said proximal portion of said shaft; and

a manually rotatable control threaded element, said control element formed with a threaded hollow shank and mounted to said proximal portion of said core wire, said control element operable to threadably engage said passage and incrementally urge relative axial displacement between said shaft and said core wire to extend said filter.

34. A catheter system for treating a blood vessel lesion within a vasculature, said catheter system including:

a vascular filter guide wire being insertable and steerable through said vasculature to a position downstream of said lesion and being in contact with said vasculature during insertion, said guide wire including a core wire and a tubular flexible shaft slidably disposed along said core wire, said shaft having a proximal portion and said core wire having a proximal portion, said catheter system including;

a catheter having a lesion treatment device;

said guide wire being capable of directing said catheter to said lesion, said guide wire including a collapsible filter for manual deployment downstream of said catheter to trap particulate matter arising from the treatment of said lesion, said filter having a proximal end and a distal end, wherein said filter proximal end is connected to said shaft and said filter distal end is connected to said core wire and said manual deployment of the filter occurs based on axial movement of said core wire relative to said shaft in order to compress said filter; and

a cylindrical support cage having a closed distal end and a flared proximal end, said distal end fixed to said core wire and said proximal end extending axially and mounted to said shaft.