Method of isolating the cerebral circulation during a cardiac procedure

• US 9,055,997 B2
• Filed: 12/28/2011
• Issued: 06/16/2015
• Est. Priority Date: 12/30/2010
• Status: Active Grant

• Current Assignee: Boston Scientific Scimed, Inc. (Boston Scientific Corporation)
• Original Assignee: Claret Medical, Inc. (Boston Scientific Corporation)
• Inventors: Fifer, Daniel W., Lashinski, Randall T., Fields, Antony J., Lee, Michael
• Primary Examiner(s): ANDERSON, GREGORY A
• Application Number:
  US13/338,916
• Publication Number:
  US 20120172916A1
• Time in Patent Office: 1,266 Days
• Field of Search: 606/200, 604523-525
• US Class Current: 1/1
• CPC Class Codes: A61B 17/22031 Gripping instruments, e.g. forceps, for removing or smashing calculi A61B17/221 takes precedence
• 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 2/2427 Devices for manipulating or deploying heart valves during implantation
• 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 2210/0014 using shape memory or superelastic materials, e.g. nitinol
• CPC Class Codes: A61F 2230/0006 circular
• CPC Class Codes: A61F 2230/0008 elliptical or oval
• CPC Class Codes: A61F 2230/005 Rosette-shaped, e.g. star-shaped
• CPC Class Codes: A61F 2230/0067 conical
• CPC Class Codes: A61F 2230/008 paraboloidal
• CPC Class Codes: A61F 2230/0093 Umbrella-shaped, e.g. mushroom-shaped
• CPC Class Codes: A61F 2250/0029 differing in bending or flexure capacity

Abstract

Single filter and multi-filter endolumenal methods and systems for filtering fluids within the body. In some embodiments a blood filtering system captures and removes particulates dislodged or generated during a surgical procedure and circulating in a patient'"'"'s vasculature. In some embodiments a filter system protects the cerebral vasculature during a cardiac valve repair or replacement procedure.

Claims

1. A method of isolating the cerebral circulation during a procedure, comprising the steps of:

advancing a catheter comprising a proximal sheath, an articulable distal sheat and a core member with a flexible coupler through the right subclavian artery, through the aorta, and into the left common carotid artery;

opening a first filter within the brachiocephalic artery by proximally retracting the proximal sheath;

articulating the articulable distal sheath and advancing a portion of the distal sheath into the left common carotid artery;

opening a second filter within the left common carotid artery by advancing a core member carrying the distal filter through the distal sheath; and

deflecting flexible coupler positioned within the left common carotid artery and proximal to the second filter and distal to a distal end of the articulable distal sheath.

2. The method of isolating the cerebral circulation as in claim 1, wherein each filter has an open end and a closed end;

and the open end of each of the first and second filters face the aorta in an as deployed orientation.

3. The method of isolating the cerebral circulation as in claim 2, wherein the procedure comprises a heart valve procedure.

4. The method of isolating the cerebral circulation as in claim 3, wherein the procedure comprises a transcatheter heart valve replacement procedure.

5. The method of isolating the cerebral circulation as in claim 1, comprising withdrawing a guidewire through the catheter until a distal end of the guidewire is proximal to the flexible coupler.

6. The method of isolating the cerebral circulation as in claim 1, further comprising proximally retracting a strut coupled to the second filter to tilt the second filter.

7. The method of isolating the cerebral circulation as in claim 1, wherein articulating the articulable distal sheath comprises retracting a pull wire.