Systems and methods for treating aneurysms
AssigneeCovidien LP
InventorsMehdi M. Rashidi, Robert A. Pecor, Junwei Li, Nelson M. Siu, Belinko K. Matsuura, David G. Matsuura
Life of this patent
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Abstract
Treatment of aneurysms can be improved by delivering an occlusive implant (e.g., an expandable braid) to an aneurysm sac in conjunction with an embolic element (e.g., coils, embolic material). A treatment system for such treatment can include an expandable member that releasably engages the occlusive implant to an engagement portion of a conduit. When the expandable member is collapsed, the conduit is disengaged from a proximal hub of the occlusive implant. The conduit and expandable member may then be retracted while the occlusive implant remains at the treatment site.
Claims20
A treatment system comprising:
- an occlusive implant comprising a proximal hub having a radially inner surface defining a hub lumen, the implant configured to be positioned at an intrasaccular treatment site;
- a conduit comprising an engagement portion configured to be releasably disposed within the hub lumen, the conduit defining a conduit lumen extending along its length and configured to pass an embolic element therethrough;
- and
- an expandable member coupled to a radially outer surface of the conduit engagement portion and configured to transition between an engaged configuration and a disengaged configuration, wherein:
- in the engaged configuration, the expandable member is expanded such that the expandable member exerts a radially outward force on the radially inner surface of the proximal hub to prevent axial movement of the proximal hub with respect to the conduit engagement portion;
- and
- in the disengaged configuration, the expandable member is collapsed such that the conduit engagement portion can be slidably retracted with respect to the proximal hub.
A treatment system comprising:
- a detachable medical device comprising a proximal hub having a radially inner surface defining a hub lumen;
- a core member comprising an engagement portion configured to be releasably disposed within the hub lumen;
- and
- an expandable member coupled to a radially outer surface of the core member engagement portion and configured to transition between an engaged configuration and a disengaged configuration, wherein:
- in the engaged configuration, the expandable member is expanded such that the expandable member exerts a radially outward force on the radially inner surface of the proximal hub to prevent axial movement of the proximal hub with respect to the core member engagement portion;
- and
- in the disengaged configuration, the expandable member is collapsed such that the core member engagement portion can be slidably retracted with respect to the proximal hub.
A method comprising:
- disposing an occlusive implant at a treatment site, the implant having a proximal hub releasably coupled to a conduit engagement portion via an expandable member in an expanded state;
- expanding the occlusive implant at the treatment site;
- collapsing the expandable member to disengage the conduit from the proximal hub;
- and
- proximally retracting conduit and the expandable member while the occlusive implant remains at the treatment site.
Dependencies are inferred from the claim text.