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US 10,548,606 B2Granted
Occlusive coil
AssigneePenumbra, Inc.
InventorsDelilah Hui, Ben Tompkins
Life of this patent
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Abstract
Vessel occlusion coils disclosed that have a primary configuration for delivery and a secondary configuration for deployment that is conferred upon the devices by a stretch resistant member. In the secondary configuration, the stretch resistant member forms a stiffer coil and may have a greater diameter, and a more complex shape having some interior space, at one end than at the other end, for improved anchoring of the device in the vessel. The methods include intravascular delivery and deployment for implanting one or more vessel occlusion devices.
Claims9
A vessel occlusion coil comprising:
- a first coil having a central lumen;
- an elongate member having a length, the elongate member disposed within the central lumen, said elongate member comprising shape memory characteristics and including a first filament having a length equal to the length of the elongate member and a second filament having a length shorter than the length of the elongate member,
- wherein the second filament is disposed at a distal end of the first filament and is entirely coextensive therewith;
- a retention element configured for releasable retainment disposed at a proximal end of the first coil;
- and
- wherein the elongate member is relatively stiffer along the length of the second filament and the elongate member is relatively softer along a length where the first filament is present without the second filament.
3 more elements
Dependencies are inferred from the claim text.