Methods and devices for endovascular embolization
First Claim
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1. An endovascular occlusion device, comprising:
- a frame comprising a proximal embolic zone and a distal anchoring zone separated by a hub;
the proximal and distal zones self-expandable from a constrained diameter to an unconstrained diameter of at least about 500% of the constrained diameter;
a guidewire lumen through the hub, to permit placement over a guidewire; and
a valve in communication with the guidewire lumen,wherein the valve comprises a collapsible tube extending from the hub into the proximal embolic zone, the collapsible tube being collapsible under blood pressure when the guidewire is removed from the hub.
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Abstract
The present disclosure describes an occlusion device and methods of delivering the occlusion device. The occlusion device can include an expandable structure configured to move between an unexpanded configuration and an expanded configuration. The expandable structure can be configured to have an expansion ratio of at least about 5:1. Further, the occlusion device can be configured to prevent substantially all fluid from flowing past the occlusion device when the occlusion device is in the expanded configuration in the vessel.
273 Citations
26 Claims
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1. An endovascular occlusion device, comprising:
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a frame comprising a proximal embolic zone and a distal anchoring zone separated by a hub; the proximal and distal zones self-expandable from a constrained diameter to an unconstrained diameter of at least about 500% of the constrained diameter; a guidewire lumen through the hub, to permit placement over a guidewire; and a valve in communication with the guidewire lumen, wherein the valve comprises a collapsible tube extending from the hub into the proximal embolic zone, the collapsible tube being collapsible under blood pressure when the guidewire is removed from the hub. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An endovascular occlusion device for mechanical occlusion of blood flow in a vessel, comprising:
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a support structure, expandable from a reduced cross section for transluminal navigation to an enlarged cross section for occluding a vessel; an upstream lobe on the support structure, separated from a downstream lobe by a neck portion; a guidewire lumen extending through the neck portion; the upstream lobe comprising a concave configuration which is concave in a direction away from the downstream lobe; a valve in the guidewire lumen the valve comprising a collapsible tube extending from the neck portion into the upstream lobe; and a porous membrane carried by the upstream lobe, wherein the upstream lobe occludes blood flow and the downstream lobe permits blood flow. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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Specification