EMBOLIC PROTECTION DEVICE FOR PROTECTING THE CEREBRAL VASCULATURE

• US 20120172915A1
• Filed: 12/28/2011
• Published: 07/05/2012
• 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
• Granted Patent: US 9,492,264 B2
• Time in Patent Office: Days
• US Class Current: 606/200
• 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. An embolic protection device for isolating the cerebral vasculature, comprising:

a first elongate, tubular body, having a proximal end, a distal end and a central lumen extending therethrough;

a first filter having a distally facing opening, carried by the first tubular body;

a second tubular body, extending through the central lumen; and

a second filter having a proximally facing opening, carried by the second tubular body.

2. The embolic protection device of claim 1, further comprising a first sheath and a second sheath, wherein the first filter is collapsible within the first sheath and the second filter is collapsible within the second sheath.

3. The embolic protection device of claim 1, wherein the first sheath and the second sheath are independently retractable.

4. The embolic protection device of claim 1, further comprising a first filter control configured to release the first filter and a second filter control configured to release the second filter.

5. The embolic protection device of claim 4, further comprising a locking mechanism configured to lock the first filter control relative to the second filter control.

6. The embolic protection device of claim 2, further comprising a tethering member extending from the first sheath to the first filter, wherein retracting the first sheath draws a portion of the first filter laterally.

7. The embolic protection device of claim 2, further comprising a tethering member extending from the second sheath to the second filter, wherein advancing the second tubular body draws a portion of the second filter laterally.

8. The embolic protection device of claim 1, wherein the second tubular body further comprises a flexible member, wherein the flexible member is configured to draw a portion of the second filter laterally.

9. The embolic protection device of claim 8, wherein the flexible member is configured to resist axial deformation.

10. The embolic protection device of claim 1, wherein the first and second filters each have an oblique truncated cone shape.

11. The embolic protection device of claim 1, wherein the first and second filters are detachable from the embolic protection device.

12. The embolic protection device of claim 1, wherein the second tubular body further comprises an atraumatic distal tip.

13. A dual filter catheter, for positioning through the brachiocephalic artery and into the left common carotid artery, comprising:

an elongate, flexible body, having a proximal end and a distal end;

a proximal filter on the body, having an open end facing in a distal direction;

a distal filter on the body, having an open end facing in a proximal direction;

a deflection zone on the body, in between the proximal and distal filters; and

a deflection zone control on the proximal end of the body, for controlling the deflection zone.

14. The dual filter catheter of claim 13, wherein the deflection zone is configured to rotate, translate axially, and deflect.

15. The dual filter catheter of claim 13, wherein the deflection zone deflects from at least about 15 degrees to no more than about 220 degrees.

16. The dual filter catheter of claim 13, wherein the deflection zone permits deflection of a first segment within a first plane, and a second segment within a second plane.

17. The dual filter catheter of claim 16, wherein the angle between the first and second plane is between about 20 degrees and about 75 degrees.

18. The dual filter catheter of claim 13, wherein the deflection zone control comprises a locking mechanism to prevent the deflection zone from deflecting unintentionally.

19. The dual filter catheter of claim 18, wherein the locking mechanism automatically locks when an operator releases the deflection zone control.