An example medical device for occluding the left atrial appendage is disclosed. The example medical device for occluding the left atrial appendage includes an expandable member having a first end region and a second end region. The expandable member comprises at least one inflation cavity and at least one valve member configured to selectively seal the inflation cavity. A first inflation media may be disposed within the at least one inflation cavity and a second inflation media may be disposed within the at least one inflation cavity. The second inflation media may be different from the first inflation media. The expandable member may be configured to expand and seal the opening of the left atrial appendage.

A delivery system (10, 110) is provided for delivering and deploying an implantable balloon-based occlusion device (20) including an inflatable balloon (22). The delivery system (10, 110) includes a delivery handle (11), which includes a fluid-retaining chamber (41, 141); a plunger, which is slidingly disposed in the fluid-retaining chamber (41, 141); and a proximal rotatable user-control knob (31). A fluid-conveyance lumen catheter (18) defines a catheter fluid-conveyance lumen (19) in fluid communication with the fluid-retaining chamber (41, 141) and the inflatable balloon (22). A catheter lumen shaft (26) is in reversible connection with the balloon-based occlusion device (20), longitudinally slidable with respect to the delivery handle (11). The delivery handle (11) is configured such that rotation of the proximal rotatable user-control knob (31) in a first rotational direction concurrently (a) expels at least some of the fluid from the fluid-retaining chamber (41, 141) into the inflatable balloon (22), via the catheter fluid-conveyance lumen (19), and (b) shortens a length of the balloon-based occlusion device (20) by proximally pulling the catheter lumen shaft (26). Other embodiments are also described.

An occlusion device for implantation in a left atrial appendage includes a proximal hub defining a recess configured to releasably connect with a delivery shaft, a frame connected to the proximal hub, a membrane coupled to and covering at least the proximal portion of the frame, the membrane comprising a material configured to block a passage of blood clots therethrough, and a plug configured to be received in the recess and remain in the recess after implantation.

Devices, systems, and methods used to seal a treatment area to prevent embolic agents from migrating are described. The concept has particular benefit in allowing liquid embolic to be used with a variety of intravascular therapeutic applications, including for occluding aneurysms and arteriovenous malformations in the neurovasculature.

An occlusion device with particular utility in occlusion of left atrial appendages is described. The occlusion device embodiments utilize an inflatable balloon or expandable element used to occlude the treatment site.

Devices and methods for treatment of a patient's vasculature are described. Embodiments may include a permeable implant having a radially constrained state configured for delivery within a catheter lumen, an expanded state, and a plurality of elongate filaments that are woven together. The implant may include first and second permeable shells. The first permeable shell having a proximal end with a concave or recessed section and a second permeable shell having a convex section that mates with the concave or recessed section. The implant also includes a flexible, articulating joint between the first and second permeable shells.

The present disclosure provides improved medical devices for occluding a left atrial appendage. In one embodiment, the medical device includes a temperature activated memory shape foam that is constructed to transition from a first collapsed conformation to a second expanded conformation upon an increase in temperature such that it can expand to provide an occlusive benefit inside a left atrial appendage. In another embodiment the medical device includes a flowable thermoset that is injected into the left atrial appendage where is it cured so that it may assume the conformation of the left atrial appendage and provide an occlusive benefit.

An occlusive implant system may include a catheter having a lumen extending from a proximal opening to a distal opening, a core wire slidably disposed within the lumen, and an occlusive implant having an expandable framework configured to shift between a collapsed configuration and an expanded configuration, and an occlusive element disposed on the expandable framework. The expandable framework may include a plurality of anchor members extending radially outward from the expandable framework, at least some of the plurality of anchor members each have a barb projecting circumferentially therefrom. The occlusive implant may be releasably connected to a distal portion of the core wire.

A medical device is provided in which one or both ends of the device encourage the formation of tissue across substantially the entire area of the respective end that is exposed to the blood flow for reducing the risk of a thrombotic embolism. The medical device further includes stabilizing wires configured to engage tissue at a target site when the medical device is in an expanded configuration and to at least partially retract into the medical device when the medical device is in a collapsed configuration.

An occlusive implant system may include a catheter having a lumen extending therethrough, a core wire slidably and rotatably disposed within the lumen, the core wire having a threaded member disposed at a distal end, and a medical implant having an expandable frame, an occlusive element disposed on the frame, and a threaded insert coupled to a proximal portion of the frame, wherein the threaded member is removably coupled to the threaded insert.