Method of isolating the cerebral circulation during a cardiac procedure

• US 10,058,411 B2
• Filed: 05/04/2015
• Issued: 08/28/2018
• 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:
  US14/703,805
• Publication Number:
  US 20150335416A1
• Time in Patent Office: 1,212 Days
• 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 system through the right subclavian artery, through the aorta, and into the left common carotid artery, the catheter system comprising a control handle having a proximal filter control and a distal filter control, the proximal filter control comprising a sliding control, the distal filter control comprising a distal sheath deflection control and a distal filter sheath handle;

opening a proximal filter within the brachiocephalic artery by withdrawing the sliding control; and

positioning a distal sheath containing a distal filter by axially moving the distal filter control;

deflecting the distal sheath by rotating a distal sheath deflection control relative to the distal filter sheath handle;

opening the distal filter within the left common carotid artery by advancing a distal filter actuator.

2. The method of isolating a 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 proximal and distal filters face the aorta in a 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, further comprising deflecting the distal filter to draw a portion of the filter toward a vessel wall.

6. The method of claim 1, further comprising resheathing the proximal filter by advancing the sliding control.

7. The method of claim 1, further comprising holding the proximal filter control stationary while advancing the distal filter control.

8. The method of claim 1, further comprising orienting the distal filter by rotating the distal filter actuator.

9. The method of claim 1, further comprising retracting the distal filter by withdrawing the distal filter actuator.

10. The method of claim 1, wherein rotating the distal sheath deflection control comprises rotating a screw drive mechanism deflect the distal sheath.

11. The method of claim 10, wherein the screw drive mechanism comprises a self-locking screw to prevent the distal sheath from unintentionally deflecting.

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

advancing a catheter system through the right subclavian artery, through the aorta, and into the left common carotid artery, the catheter system comprising a control handle having a proximal filter control and a distal filter control, the distal filter control comprising a distal filter sheath handle;

opening a proximal filter within the brachiocephalic artery using the proximal filter control; and

positioning a distal sheath containing a distal filter by axially moving the distal filter control;

after positioning the distal sheath, locking a position of the distal filter control relative to the proximal filter control by locking a proximal filter control lock;

opening the distal filter within the left common carotid artery by advancing a distal filter actuator; and

after opening the distal filter, locking a position of the distal filter relative to the distal filter sheath handle by locking a position of a distal filter control lock.

13. The method of claim 12, wherein the distal filter control lock is positioned between the distal filter sheath handle and the distal filter actuator.

14. The method of claim 12, wherein the proximal filter control lock is positioned proximal of the proximal filter control.

15. The method of claim 12, further comprising deflecting the distal sheath by rotating a distal sheath deflection control of the distal filter control relative to the distal filter sheath handle.

16. The method of claim 15, wherein rotating the distal sheath deflection control comprises rotating a screw drive mechanism deflect the distal sheath.

17. The method of claim 16, wherein the screw drive mechanism comprises a self-locking screw to prevent the distal sheath from unintentionally deflecting.

18. The method of claim 12, further comprising holding the proximal filter control stationary while advancing the distal filter control.

19. The method of claim 12, further comprising orienting the distal filter by rotating the distal filter actuator.

20. The method of claim 12, further comprising retracting the distal filter by withdrawing the distal filter actuator.