A flow restrictor (50) for an embolization device (10), the flow restrictor having an inner hole (52) for receiving a stem (20) of the embolization device to mount the flow restrictor on the embolization device, wherein the flow restrictor comprises: a membrane (56) for restricting flow in the bodily lumen, having a first elasticity; and a reinforcing section (54) having a second elasticity and at least partially surrounding the inner hole.

An apparatus includes a plurality of beads each defining a first opening and a second opening, a linking assembly, and a 3D printed magnetic element housed within a first bead of the plurality of beads. The linking assembly extends through the first opening and the second opening of each bead such that the beads and the linking assembly may be arranged in an annular arrangement to form a loop around an anatomical structure in a patient. The loop moves between a contracted configuration and an expanded configuration and is magnetically biased toward the contracted configuration. The 3D printed magnetic element is housed within a first bead of the plurality of beads. The 3D printed magnetic element include a composite of magnetic granules combined to generate a magnetic field. The magnetic field is generated by the 3D printed element and is configured to contribute toward the magnetic bias.

An apparatus includes a plurality of beads a linking assembly joining the beads together. The beads and the linking assembly are arranged in an annular arrangement and sized to form a loop around an anatomical structure in a patient. The loop may move between a contracted and expanded configuration. The loop is magnetically biased toward the contracted configuration by a magnetic bias of the beads. Each bead includes a housing having a first piece and a second piece that together define a magnetic chamber. A magnetic is within the magnetic chamber. A weld joins the first piece and the second piece while hermetically sealing the magnet chamber. The first piece of the housing includes a mounting feature integrated with a surface of the first piece. The mounting feature mates with a fixture to constrain the first piece of the housing as the weld is formed.

A method of manufacturing a bead assembly for a sphincter augmentation device includes initiating 3D printing of a unibody housing such that the unibody housing defines a first opening, a chamber, and a magnet chamber. The method further includes pausing the 3D printing process, inserting a magnet within the magnetic chamber, and then resuming 3D printing of the unibody housing to form a hermetic seal between the magnet chamber and an external surface of the unibody housing.

An apparatus includes a plurality of beads and a linking assembly joining the beads together. The beads include a first bead having a first external contact surface, and a second bead having a second external contact surface. A magnet is contained within the housing. The beads and the linking assembly are arranged in an annular arrangement and sized to form a loop around an anatomical structure in a patient. The loop may move between a contracted and expanded configuration. The loop is magnetically biased toward the contracted configuration by a magnetic bias of the beads. The first external contact surface and the second external contact surface engage each other as the loop transitions into the contracted configuration to drive the first bead and the second bead into a predetermined orientation relative to each other about the linking assembly in the contracted configuration.

Methods and devices for treating a cerebral aneurysm utilize a device that includes a self-expanding resilient permeable shell made from elongate resilient filaments. At least some of the filaments have a distal region that extends beyond the distal end of the permeable shell and form an extension having a generally circular shape when expanded. The permeable shell has a radially constrained elongated state configured for delivery within a microcatheter and has an expanded state with a globular, axially shortened configuration. The permeable shell has a plurality of openings formed between the braided filaments. The distal regions of the plurality of filaments that form the extension may be braided, partially braided, or unraveled. Once deployed within the cerebral aneurysm, the extension may be positioned near a dome of the cerebral aneurysm.

An occlusive device, occlusive device delivery system, method of using, and method of delivering an occlusive device, and method of making an occlusive device to treat various intravascular conditions is described.

An endovascular surgical tool includes a flexible, electrically-conductive corewire, a return conductor, a resistive heating element attached to the distal end of the corewire, and a therapeutic payload attached to the loop of the resistive heating element by a coil connecting member. The corewire includes at least one segment at its distal end which transitions from the substantially uniform cross-section of its proximal end to a smaller distal cross-section. The return conductor is electrically insulated from and bonded to the corewire. The resistive heating element includes a first terminal electrically connected to the corewire, a second terminal electrically connected to the return conductor, a helical coil, and a loop. The helical coil and the loop are electrically in series between the first terminal and the second terminal. The coil connecting member has a release temperature lower than a loop melting temperature of the loop of the resistive heating element.

An endovascular apparatus, including an elongated catheter having an inner lumen extending therethrough; a balloon affixed to the catheter for expansion into the inner lumen of the catheter when the balloon is inflated; and a tube secured relative to the balloon, wherein the tube is configured to enable selective inflation and deflation of the balloon, and wherein an outer diameter of a portion of the catheter adjacent the balloon is substantially the same when the balloon is inflated and when the balloon is deflated.

The present disclosure relates to a self-expanding braided implant, including a distal implant end and a proximal implant end, the braided implant being invertible about the distal implant end. Translation of the braided implant distally causes the braided implant to invert and fold into itself thereby forming an occlusive sack configured to occlude the aneurysm.