Aortic embolic protection device

• US 9,259,306 B2
• Filed: 12/28/2011
• Issued: 02/16/2016
• Est. Priority Date: 12/30/2010
• Status: Active Grant

• Current Assignee: Boston Scientific Scimed (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:
  US13/338,982
• Publication Number:
  US 20120172919A1
• Time in Patent Office: 1,511 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 filter embolic protection system, for positioning in the aorta, comprising:

a catheter comprising a tubular body;

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

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

a filter assembly carried by the second tubular body, the filter assembly comprising a plurality of discrete, individual petals arranged in a circular array about a longitudinal axis, each of the discrete, individual petals comprising a frame and a filter element covering the frame, having an inner surface facing the longitudinal axis and an opposite outer surface facing away from the longitudinal axis;

wherein the filter assembly apposes the catheter when the catheter passes between one of said individual petals and a circumferentially adjacent one of said individual petals to prevent substantially all debris from flowing past the filter assembly when the catheter is positioned between the second tubular body and a vessel wall, the catheter based device contacting the outer surface of an apposing filter element.

2. The single filter embolic protection device of claim 1, wherein each petal has a length between 2 and 6 centimeters.

3. The single filter embolic protection device of claim 1, wherein adjacent petals overlap each other.

4. The single filter embolic protection device of claim 1, wherein each petal includes an arch at a distal end of the petal.

5. The single filter embolic protection device of claim 4, wherein each petal further includes a pair of struts extending in a proximal direction from ends of the arch.

6. The single filter embolic protection device of claim 5, wherein the pair of struts extends towards each other in the proximal direction.

7. The single filter embolic protection device of claim 1, wherein the frame includes an arch at a distal end of the frame.

8. The single filter embolic protection device of claim 7, wherein each petal further includes a pair of struts extending in a proximal direction from ends of the arch.

9. The single filter embolic protection device of claim 8, wherein the pair of struts extends towards each other in the proximal direction.

10. The single filter embolic protection device of claim 1, wherein the frame comprises a shape memory material.

11. The single filter embolic protection device of claim 1, wherein filter element comprises sheet with multiple holes.

12. The single filter embolic protection device of claim 1, wherein each of the petals is inwardly deflectable towards a center of the circular away with respect to an adjacent petal.