Vascular filtration device
AssigneeW. L. Gore & Associates, Inc.
InventorNathan L. Friedman
Life of this patent
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Abstract
Vascular filtering devices and methods for their use are disclosed. In some embodiments, the vascular filtering devices include an elongate member having an unsupported membrane bag portion attached thereto. The membrane may be porous in some examples. Multiple elongate extensions may also extend from the membrane, and may extend along the elongate member, such as to a proximal region of the elongate member. The unsupported membrane bag portion may be configured to inflate or otherwise radially expand away from the elongate member as a result of blood flowing through the vessel within which the vascular filtering device is positioned.
Claims20
A method of vascular filtration, comprising:
- advancing a vascular filtration device to a deployment site within a blood vessel, the vascular filtration device including an elongate member and an unsupported bag portion positioned along a distal portion of the elongate member and having a plurality of elongate extensions extending to a proximal end of the elongate member, the vascular filtration device being advanced to the deployment site with the bag portion collapsed against the elongate member with the elongate extensions secured against translation relative to the elongate member;
- and
- releasing the elongate extensions such that the elongate extensions are free to translate relative to the elongate member, wherein blood flow through the blood vessel causes the bag portion to expand radially away from the elongate member.
Dependencies are inferred from the claim text.