An implant for occluding a left atrial appendage may include an expandable framework including a first framework portion and a second framework portion, wherein the expandable framework is configured to shift along a longitudinal axis between a collapsed configuration and an expanded configuration. The second framework portion may be disposed radially inward of the first framework portion in the collapsed configuration. The expandable framework includes a proximal hub and a distal hub. The first framework portion may be fixedly attached to the proximal hub and the distal hub. The second framework portion may be fixedly attached to the proximal hub and the distal hub.

This invention relates to an aneurysm occluder, and more particularly but not exclusively, to an endovascular aneurysm occluder that can be inserted into an aneurysm cavity by using endovascular surgical procedures. The aneurysm occluder has a deformable housing and an absorber or material that causes blood clotting made of an absorbent material in or attached to the housing.

An implant for occluding a left atrial appendage may include an expandable framework including a body portion and a disk portion, wherein the expandable framework is configured to shift between a collapsed configuration and an expanded configuration, and an occlusive disk element disposed within the disk portion. The disk portion may include a first disk portion integrally formed with the body portion, and a second disk portion movably attached to the first disk portion by at least one hinge member.

An implant (1) for the treatment of aneurysms (11), wherein the implant (1) has an elongated configuration navigable via a microcatheter (12) and a secondary configuration which it assumes upon release from the microcatheter (12). The implant (1) forms an open, unrolled structure (2) extending from proximal to distal, said implant being built up of a plurality of struts (3) forming adjacent cells (4), and with at least a part of said cells (4) being provided with membranes (6) filling the cells (4), and with the secondary structure comprising an at least partial rolling up of the open, unrolled structure (2) axially and radially relative to the longitudinal axis of the implant (1) and resulting in the formation of a spherical structure. The implant (1) proposed by the invention is suitable to adapt to the inner wall of an aneurysm (11) and to fill an aneurysm (11) almost completely.

Various aspects of the present disclosure are directed toward systems, methods, and apparatuses that include an occlusion device having a barrier member. The barrier member may include an enlargeable portion and a tail portion extending from the enlargeable portion. The enlargeable portion and the tail portion are releasably coupled to the delivery catheter such that the tail portion is radially unsupported and collapsible upon deployment.

Medical devices, systems and methods for forming an occlusive material for occluding a left atrial appendage of a heart are provided. In one embodiment, the occlusive material includes a foam portion that extends as a single piece, seamless monolithic structure that is sized to couple to an external side of a framework of a medical device. In another embodiment, the occlusive material may include a polymeric laminate. Such polymeric laminate may be adhered to an outer side of the foam portion. Further, various embodiments for forming a polymer laminate are provided.

An occlusive implant may include an expandable framework configured to shift between a collapsed configuration and an expanded configuration, the expandable framework including a proximal end and a distal end. The expandable framework includes a plurality of anchor members extending radially outward from the expandable framework in the expanded configuration, each anchor member including a root portion fixedly attached to the expandable framework and extending distally to a trunk portion in the expanded configuration. At least a portion of the trunk portion extends radially outward relative to the root portion in the expanded configuration. At least one of the plurality of anchor members includes a plurality of branches extending radially outward from the trunk portion in the expanded configuration.

A device for occluding a patient's left atrial appendage (LAA) device includes a self-expanding closure disc and an anchor. The self-expanding closure disc has an atrial side, an appendage side, and a peripheral edge configured to engage tissue on both an atrial side and an appendage side of an opening between the left atrium and the left atrial appendage. The self-expanding anchor extends from the appendage side of the self-expanding closure disc, and an annular sealing skirt extends about at least a portion of the appendage side of the self-expanding closure disc. the annular sealing skirt is more compliant than the self-expanding closure disc to seal over the left appendage side of the opening after implantation of the device in the LAA.

A method of producing an arteriovenous (AV) fistula includes producing an anastomosis between a primary blood vessel (e.g., a vein) and a secondary blood vessel (e.g., an artery). A collateral (or competing) blood vessel in fluid communication with one of the primary blood vessel or the secondary blood vessel is identified. A reversible flow restrictor is then applied to the collateral blood vessel to reduce a blood flow rate through the collateral blood vessel. In some embodiments, the anastomosis can be produced percutaneously. In some embodiments, the reversible flow restriction (or a portion thereof) can be removed from the collateral blood vessel. In other embodiments, the reversible flow restriction (or a portion thereof) can be adjusted to allow increased blood flow therethrough while within the collateral blood vessel.

An occlusive device for occluding a target area can include an elongate member having opposing first and second side edges extending longitudinally along the member and a member width. The member can have a collapsed configuration in which the first and second side edges are curled toward each other about a longitudinal axis of the member. Further the member can have an expanded configuration in which the member form a series of loops and the first and second side edges uncurl to be spaced apart from each other.