Embolic protection device

Patent metadata

Field	Value
Publication number	US-10973618-B2
Application number	US-201313782703-A
Country	US
Kind code	B2
Filing date	Mar 1, 2013
Priority date	Mar 1, 2013
Publication date	Apr 13, 2021
Grant date	Apr 13, 2021

Abstract

Embolic protection devices and systems capture and/or deflect emboli from entering one or more arterial branches of the aorta. An embolic protection device may include an anchor section that is positionable within an arterial branch of the aorta and a shield section that is operatively coupled to the anchor section. The shield section is positionable relative to one or more ostia of the aortic branches and is held in that position by the anchor section.

First claim

The invention claimed is:

1. An embolic protection device for inhibiting the passage of emboli into at least one artery of a plurality of arteries in a human patient, each of the plurality of arteries being connected at an ostium to the aortic arch, the device comprising:
an anchor section having a compressed state and being biased to an expanded state, the anchor section being positionable within one of the arteries so that, in the expanded state, the anchor section circumscribes and frictionally engages the wall of the one artery at a position spaced from the aortic arch, the anchor section being formed from a first material having a plurality of openings sized to permit the passage of blood through the one artery, but to prevent the passage of emboli larger than a predetermined size through the one artery;
a shield section having a compressed state and being biased to an expanded state, the shield section in the expanded state having a longitudinal axis and being curved (i) away from the anchor section in a first direction about the longitudinal axis so that the shield section corresponds to the transverse cross-section of the aortic arch and (ii) away from the anchor section in a second direction about an axis orthogonal to the longitudinal axis so that the shield section in the expanded state forms a convex surface facing the anchor section that corresponds to the longitudinal cross-section of the aortic arch to facilitate apposition of the shield section against the upper surface of the aortic arch, the shield section being formed from a second material having a plurality of openings sized to permit the passage of blood from the aortic arch into another one of the arteries, but to prevent the passage of emboli larger than a defined size from the aortic arch into the another artery, the shield section being positionable within the aortic arch in the expanded state so that the plurality of openings of the shield section lie against the ostium of the another artery but not within the another artery when the anchor section is positioned within the one artery and so that the shield section does not circumscribe the circumference of the aortic arch; and
a connector operatively connecting the shield section to the anchor section at a spaced distance from the anchor section.

2. The embolic protection device of claim 1 , wherein one of the anchor section and the shield section is operatively coupled to a wire.

3. The embolic protection device of claim 1 , wherein the connector includes an arm operatively coupling the anchor section to the shield section.

4. The embolic protection device of claim 1 , wherein the anchor section and the shield section are each formed from a braided material.

5. The embolic protection device of claim 1 , wherein at least one of the anchor section and the shield section is formed from a shape memory material.

6. The embolic protection device of claim 1 , wherein at least one of the anchor section and the shield section includes a filter separate from the plurality of openings, the filter being formed from a material different from the first material and the second material.

7. The embolic protection device of claim 6 , wherein the filter includes an anti-thrombogenic coating.

8. The embolic protection device of claim 6 , wherein the filter is formed from a porous polymer.

9. The embolic protection device of claim 6 , wherein the filter is formed from a porous sheet material.

10. The embolic protection device of claim 1 , wherein the anchor section has a hollow interior.

11. An embolic protection device for inhibiting the passage of emboli into at least one artery of a plurality of arteries in a human patient, each of the plurality of arteries being connected at an ostium to the aortic arch, the device comprising:
an anchor section having a compressed state and being biased to an expanded state, the anchor section being positionable within one of the arteries so that, in the expanded state, the anchor section circumscribes and frictionally engages the wall of the one artery at a position spaced from the aortic arch, the anchor section being formed from a first material having a plurality of openings sized to permit the passage of blood through the one artery, but to prevent the passage of emboli larger than a predetermined size through the one artery;
a shield section having a compressed state and being biased to an expanded state, the shield section in the expanded state having a longitudinal axis and being curved (i) away from the anchor section in a first direction about the longitudinal axis so that the shield section corresponds to the transverse cross-section of the aortic arch and (ii) away from the anchor section in a second direction about an axis orthogonal to the longitudinal axis so that the shield section in the expanded state forms a convex surface facing the anchor section that corresponds to the longitudinal cross-section of the aortic arch to facilitate apposition of the shield section against the upper surface of the aortic arch, the shield section being formed from a second material having a plurality of openings sized to permit the passage of blood from the aortic arch into another one of the arteries, but to prevent the passage of emboli larger than a defined size from the aortic arch into the another artery, the shield section being positionable within the aortic arch in the expanded state so that the plurality of openings of the shield section lie against the ostium of the another artery but not within the another artery when the anchor section is positioned within the one artery and so that the shield section does not circumscribe the circumference of the aortic arch;
at least one of the anchor section and the shield section including a filter, the filter being formed from a material different from the first material and the second material; and
an arm having a first end operatively coupled to the anchor section and a second end operatively coupled to the shield section, the arm being configured to be bendable and biased toward a substantially J-shaped configuration.

12. The embolic protection device of claim 11 , wherein the filter lines an interior surface of the anchor section.

13. The embolic protection device of claim 11 , wherein the filter has an anti-thrombogenic coating.

14. The embolic protection device of claim 11 , wherein the anchor section has an axis extending longitudinally therethrough, and the anchor section is radially collapsible with respect to the axis.

15. The embolic protection device of claim 11 , further comprising a wire that is operatively coupled to a proximal end of the anchor section.

16. The embolic protection device of claim 15 , wherein the wire is releasably secured to the proximal end of the anchor section.

17. The embolic protection device of claim 11 , wherein the anchor section has a cylindrical configuration in the expanded state.

18. The embolic protection device of claim 11 , wherein the shield section and the anchor section are formed from a material having shape memory properties.

19. The embolic protection device of claim 11 , wherein the anchor section in the expanded state has a conical configuration with a closed end and an open end.

20. An embolic protection system for inhibiting the passage of emboli into at least one artery of a plurality of arteries in a human patient, each of the plurality of arteries being connected at an ostium to the aortic arch, the system comprising:
an embolic protection device having a compressed conditio

Assignees

• Aga Medical Corp
• St Jude Medical Cardiology Div Inc

Inventors

• Adams Daniel
• Gries Sara Jane
• Lecy Cheryl A
• Ren Brooke
• Glimsdale Mathias Charles
• Cochenour Carolyn

Classifications

• A61F2/01 Primary

  Filters implantable into blood vessels · CPC title

• A61F2002/016

  made from wire-like elements · CPC title

• A61F2/011

  Instruments for their placement or removal · CPC title

• A61F2/013

  Distal protection devices, i.e. devices placed distally in combination with another endovascular procedure, e.g. angioplasty or stenting · CPC title