EMBOLIC PROTECTION DEVICE

• US 20090143814A1
• Filed: 02/05/2009
• Published: 06/04/2009
• Est. Priority Date: 11/07/1997
• Status: Abandoned Application

• Current Assignee: Salviac Ltd. (Abbott Laboratories)
• Original Assignee: Salviac Ltd. (Abbott Laboratories)
• Inventors: Maher, Padraig, Brady, Eamon, Vale, David, Taylor, Charles, GILSON, Paul
• Application Number:
  US12/366,249
• Publication Number:
  US 20090143814A1
• Time in Patent Office: Days
• US Class Current: 606/200
• CPC Class Codes: A61B 2017/22051 with an inflatable part, e.g. balloon, for positioning, blocking, or immobilisation A61B2017/22048, A61B2017/3486 take precedence
• CPC Class Codes: A61B 2017/22067 Blocking; Occlusion A61B2017/22054 takes precedence
• 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 2002/015 Stop means therefor
• 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 2230/0067 conical
• CPC Class Codes: A61F 2230/0069 cylindrical
• CPC Class Codes: A61F 2230/0093 Umbrella-shaped, e.g. mushroom-shaped
• CPC Class Codes: A61F 2230/0097 Harpoon-shaped

Abstract

An embolic protection device has a collapsible filter element (105) mounted on a carrier such as a guidewire (101). The filter element (105) collapses into the outer end of a catheter (118) for deployment and retrieval through a vascular system of a patient. The filter element (105) has a collapsible filter body with a proximal inlet end and a distal outlet end. The proximal inlet end has inlet openings sized to allow blood and embolic material enter the filter body. The outlet end has outlet openings which allow through passage of blood but retain embolic material within the filter body. After use, the catheter (118) is movable along the guidewire (101) to engage the proximal end of the filter element and close the inlet openings before sliding over the filter element from the proximal end to the distal end to progressively collapse the filter body on the guidewire (101) for retrieval. The filter element (105) may conveniently be mounted on a tubular sleeve (104) which is slidable and rotatable on the guidewire (101) between spaced-apart stops (106, 120) on the guidewire (101) which allows some manipulation of the guidewire independently of the filter when the filter is in use.

Claims

1. An embolic protection device, comprising:

an elongate wire member having a proximal end and a distal end;

a filter slidably disposed adjacent the distal end of the elongate wire member, the filter having a wire loop adjacent the proximal end of the filter, the wire loop coupled to a proximally facing open mouth and a filter portion disposed distally of the open mouth, the filter portion disposed proximal to the distal end of the elongate wire member, wherein the proximal and distal end of the filter being slidable with respect to the wire, the open mouth having a center of cross-sectional area, the filter being eccentrically coupled on the elongate member such that the center of cross-sectional area is disposed to one side of the elongate wire member.

2. The embolic protection device of claim 1 wherein the loop is substantially radiopaque.