A method of occluding an aneurysm includes positioning a braided implant within an aneurysm sack such that an outer non-inverted layer contacts a wall of the aneurysm and an inverted layer apposes the outer non-inverted layer to form a double layer of braid across a neck of the aneurysm. A radiopaque end of the braided implant can be positioned centrally within the aneurysm so that the radiopaque end extends adjacent or across a plane defined by a fold between the outer non-inverted layer and the inner inverted layer. Embolic coils can be inserted into the aneurysm sac and inhibited from exiting the aneurysm at the neck by the double layer braid across the aneurysm neck.

Systems and methods for treating an aneurysm in accordance with embodiments of the present technology include intravascularly delivering an occlusive member to an aneurysm cavity via an elongated shaft and transforming a shape of the occlusive member within the cavity. The method may include introduction of an embolic element to a space between the occlusive member and an inner surface of the aneurysm wall. In some embodiments, the elongated shaft is detachably coupled to a distal portion of the occlusive member.

An embolic coil with a secondary, delivered shape utilizing regions of varying stiffness is described. In some embodiments, these regions of varying stiffness are created by utilizing a larger primary wind loop diameter to create selective regions with lower stiffness and higher flexibility. In some embodiments, these regions of higher flexibility correspond to inflection regions on a complex coil shape to ease deliverability of the coil during therapeutic procedures.

A tubular braided implant is provided including a braid that can be delivered as a single layer braid, invert into itself during deployment to form at least two nested sacks and include additional braid material that can fill the innermost sack. The additional braid material can loop or coil like a ribbon and/or invert to form smaller and smaller nested sacks. The braid can have a variable braid angle along its length such that when positioned for delivery, the can have a high braid angle near its distal end and a low braid angle near the proximal end. In addition, or as a replacement for the braid material that fills the innermost sack, the implant can include an embolic coil that can loop within the innermost sack.

Temporary vascular occlusion devices and methods for use thereof are described which provide temporary vascular occlusion while maintaining distal perfusion along with vascular access. The temporary vascular occlusion device may include a multiple layer scaffold covering having proximal and distal attachment zones separated by an unattached scaffold covering zone where the scaffold covering is adjacent to but not attached directly to the scaffold frame. Devices for a vascular procedure may access the vasculature using a guide catheter in the shaft of the occlusion device. The occlusion device may then be used to provide protection from contrast media used during the vascular procedure conducted using the access provided by the occlusion device.

A device for occluding a vasculature of a patient including a micrograft having an absorbent polymeric structure with a lumen of transporting blood. The micrograft has a series of peaks and valleys formed by crimping. The occluding device is sufficiently small and flexible to be tracked on a guidewire and/or pushed through a microcatheter to a site within the vasculature of the patient. Delivery systems for delivering the micrografts are also disclosed.

In various aspects, the invention includes an embolic device for use in treating a vascular disorder that can include a flexible structure including a series of alternating narrow portions and link portions. Each link portion can include two struts that substantially circumscribe an opening in at least one plane. In some cases, the embolic device further includes a link portion coil disposed over each of the two struts of at least one link portion.

A flow blocking catheter including an inner tube, an outer tube and a flow blocking member is provided. The outer tube is sleeved on an exterior of the inner tube and at least one end of the flow blocking member is coupled to the inner or outer tube. The ratio of the inner diameter of the inner tube to the outer diameter of the outer tube is equal to or greater than 0.7. With this arrangement, the inner diameter of the flow blocking catheter is able to be increased at a given outer diameter thereof, which makes it suitable for the treatment of large-size blood clots or passage of instruments and broadens its application range as well as improving effect of vascular treatments.

In some aspects, the present disclosure provides a delivery device for delivering a detachable medical implant that comprises an elongated delivery member and a first engagement portion. The first engagement portion comprises a first proximal-facing surface, a first distal-facing surface, and a first lumen that is configured to accommodate an activation wire, wherein at least 50% of a surface area of the first proximal-facing surface is angled away from a proximal end of the first engagement portion. In other aspects, the present disclosure provides a medical delivery system comprising: such a delivery device; an implantable device comprising a medical device portion and a second engagement portion, the second engagement portion comprising a second lumen configured to accommodate an activation wire, a second proximal-facing surface and a second distal-facing surface; and an activation wire. Other aspects pertain to methods of medical device delivery using such a medical delivery system.

Devices and methods are described for occluding the left atrial appendage (LAA). The device excludes the LAA from blood flow to prevent blood from clotting within the LAA and subsequently embolizing, particularly in patients with atrial fibrillation. The implantable device is delivered via transcatheter delivery into the LAA and secured within the LAA. The implant comprises an expandable and compliant frame and an expandable and conformable tubular foam body. The device may have a thromboresistant cover at a proximal end. The frame may have recapture struts inclining radially outwardly from a central hub. The frame may have axially extending side wall struts, with adjacent pairs of side wall struts joined at one or more apexes. Anchors extend from the frame and into the foam to engage tissue.