Foam embolic protection device
First Claim
Patent Images
1. An embolic protection device for use in a vessel, the embolic protection device comprising:
- a filter portion including a porous foam body comprised of a shape memory alloy foam, pores of the porous foam body being sized to allow blood to flow through the foam body; and
a plurality of struts attached to the filter portion and extending proximally therefrom, the filter portion and the plurality of struts forming a basket, where the basket is configured to have an expanded and collapsed state;
wherein the foam body has a generally conical geometry and wherein the struts are radially spaced around the circumference of the generally conical geometry; and
a plurality of folds in the generally conical geometry, each fold extending radially from an apex of the generally conical geometry and along a side of the generally conical geometry.
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Abstract
An embolic protection device includes a foam body attached to a plurality of flexible struts. The foam body has a generally conical geometry and the bottom of the conical geometry having a generally conical recess. The filter portion has pores sized such that blood cells can pass through the foam body, but larger material such as objects would be trapped in the recess. Each strut is attached along the periphery of the foam body and extend from the first end of the foam body to a connection point located proximate the first end.
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Citations
16 Claims
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1. An embolic protection device for use in a vessel, the embolic protection device comprising:
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a filter portion including a porous foam body comprised of a shape memory alloy foam, pores of the porous foam body being sized to allow blood to flow through the foam body; and a plurality of struts attached to the filter portion and extending proximally therefrom, the filter portion and the plurality of struts forming a basket, where the basket is configured to have an expanded and collapsed state; wherein the foam body has a generally conical geometry and wherein the struts are radially spaced around the circumference of the generally conical geometry; and
a plurality of folds in the generally conical geometry, each fold extending radially from an apex of the generally conical geometry and along a side of the generally conical geometry. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An embolic protection device for use in a vessel, the embolic protection device comprising:
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a filter portion including a porous Nitinol foam body having a conical geometry, pores of the porous Nitinol foam body being sized to allow blood to flow through the foam body; a plurality of struts attached to the filter portion and extending proximally therefrom, the filter portion and the plurality of struts forming a basket, where the basket is configured to have an expanded and collapsed state; and a plurality of folds in the conical geometry, the plurality of folds extending radially from an apex of the conical geometry and along a side of the conical geometry, wherein the plurality of folds form an alternating pattern of inward and outward folds periodically spaced around a circumference of the conical geometry. - View Dependent Claims (11, 12, 13, 14, 15)
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16. An embolic protection device for use in a vessel, the embolic protection device comprising:
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a filter portion including a porous foam body, the foam body having a generally conical geometry including a plurality of folds, each fold extending radially from an apex of the generally conical geometry and along a side of the generally conical geometry; and a plurality of struts attached to the filter portion and extending proximally therefrom, the filter portion and the plurality of struts forming a basket, where the basket is configured to have an expanded and collapsed state.
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Specification