Dual endovascular filter and methods of use

• US 10,130,458 B2
• Filed: 03/10/2015
• Issued: 11/20/2018
• Est. Priority Date: 07/27/2009
• Status: Active Grant

• Current Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Original Assignee: Claret Medical, Inc. (Boston Scientific Corporation)
• Inventors: Lashinski, Randall T.
• Primary Examiner(s): Anderson, Gregory
• Application Number:
  US14/644,083
• Publication Number:
  US 20150230910A1
• Time in Patent Office: 1,351 Days
• CPC Class Codes: A61F 2/01 Filters implantable into blood vessels
• 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 2002/018 made from tubes or sheets of material, e.g. by etching or laser-cutting
• CPC Class Codes: A61F 2230/001 Figure-8-shaped, e.g. hourglass-shaped
• CPC Class Codes: A61F 2230/0078 hyperboloidal
• CPC Class Codes: A61F 2230/008 paraboloidal
• CPC Class Codes: A61F 2230/0095 Saddle-shaped

Abstract

Blood filter devices and methods of use.

Claims

1. An embolic filter device, comprising:

a sheath

a first filter portion configured to open upon being released from the sheath, the first filter portion having an open portion and a closed portion, the closed portion of the first filter portion configured to be positioned in a brachiocephalic artery such that foreign particles traveling into the brachiocephalic artery will be trapped in the first filter portion;

a second filter portion comprising an open portion and a closed portion, the closed portion of the second filter portion configured to be positioned in a left common carotid artery while the closed portion of the first filter portion is positioned in the brachiocephalic artery such that foreign particles traveling into the left common carotid artery will be trapped in the second filter portion,

a frame, the first filter portion and the second filter portion being secured to the frame, wherein the embolic filter device is configured to protect a left subclavian artery.

2. The filter device of claim 1, wherein the closed portions of the first and second filter portions extend about 0.5 cm to about 3 cm from the frame.

3. The filter device of claim 1, wherein the first and second filter portions are generally dome shaped.

4. The filter device of claim 1, wherein the frame has a first portion and a second portion, wherein the first and second portions of the frame are adapted to be folded towards one another to reconfigure the frame into a retrieval configuration.

5. The device of claim 1, further comprising a delivery device through which the frame and the first and second filter portions are adapted to be delivered, and further comprising a lock to lock the frame relative to the delivery device.

6. The device of claim 1, where the frame and the first and second filter portions have an aspect ratio of at least about 2:

1.

7. The device of claim 1, wherein the first and second filter portions are both concave.