A braided implant is provided that can secure within an aneurysm sac, occlude a majority of the aneurysm's neck, and at least partially fill the aneurysm sac. The implant can include a tubular braid that can be set into a predetermined shape, compressed for delivery through a microcatheter, and implanted in at least one implanted position. In some examples, the tubular braid can be implanted in two distinct implanted shapes, allowing for treatment of a wide range of aneurysm sizes. In some examples, the implanted braid can include a compaction resistant column spanning the height of the aneurysm.

A method for determining the positioning in deployed position of an expandable medical device type implant, including, from a three-dimensional image of a region of interest including the vascular structure, the following steps: determination of a centreline of the vascular structure, positioning of the IMD according to an initial position, around the centreline, simulation of the final position of the IMD after deployment, as a function of the stresses exerted by the walls of the vascular structure on the IMD, the determination of the centreline consisting in placing points so as to minimise a travel time of fluid along said points between an input point and an output point, the simulation of the final position of the IMD taking account of a level of longitudinal push-pull intended to be applied to the IMD during its implantation.

Embodiments of the present invention provide an improved vascular occlusion device for occlusion of a passageway, cavity, or the like. According to one embodiment, a medical device for occluding a left atrial appendage is provided. The medical device includes a first portion having at least one plane of occlusion that is configured to be positioned outside of the left atrial appendage, and a second portion having at least one plane of occlusion that is configured to be at least partially positioned within a cavity defined by the left atrial appendage.

Disclosed are embodiments of a method for occluding a left atrial appendage (LAA) and other cavities or openings within a body. Some embodiments of the method can include an implant configured to be deployed within the LAA or other cavity, configured to be expanded or moved against a wall portion of the LAA or other cavity, and configured to twist at least a portion of the LAA or other cavity when the implant is rotated. Thereafter, one or more securing elements, staples, sutures, or other fasteners can be implanted in the gathered tissue to hold the tissue in the gathered state, thereby occluding the opening of the LAA or other cavity. In some embodiments, the opening of the LAA or other cavity can be occluded by elongating or otherwise reshaping the opening using an implant device, and securing the opening in the occluded state.

Apparatus and methods are described including a catheter, a first pump disposed on the catheter, and a second pump disposed on the catheter, proximally to the first pump. A control unit is configured to control activation of the first and second pumps. The first and second pumps are configured, when activated, to pump fluid in opposite directions from one another. Other applications are also described.

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.

This intrasacular aneurysm occlusion device includes a neck bridge with a closeable opening through which embolic material is inserted into an aneurysm sac. After the neck bridge has been expanded within the aneurysm sac, a catheter is inserted through the opening and embolic material is delivered through the catheter into the aneurysm sac. After the aneurysm sac has been filled with embolic material, the catheter is then withdrawn and the opening is closed so that embolic material does not escape out of the aneurysm sac.

Disclosed is an occluder for occluding a defect in a vasculature. The occluder includes: two occluding disks and a tightening element. The two occluding disks is configured for covering different openings of the defect; wherein the tightening element includes a tightening thread, the tightening thread passing through the defect and being connected to the two occluding disks, the tightening thread has a length between the two occluding disks and the length is adjustable by means of a free end of the tightening thread. Further provided are an occluding system provided with the occluder, a knotting method for the tightening element of the occluder and a method for occluding an oval foramen with the occluder.

A method and device include attaching a tether portion of a sleeve to a distal end of a catheter, placing the distal end of the catheter into a selected position within a vessel, moving a stent through a lumen of the catheter, retentively engaging a first end of the stent with a distal end of the sleeve, and detaching the sleeve about the tether portion such that the sleeve covers at least a portion of the stent at the selected position within the 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.