An embolic implant includes a detachment feature configured to engage and be released from a delivery member's engagement system. The engagement system can include a loop wire extending through an opening of the detachment feature a pull wire extending through the loop wire to secure the detachment feature to a delivery tube of the delivery member. The detachment feature can include a distal extension configured to engage a distal end of the pull wire to inhibit the pull wire from moving distally into the implant. The detachment feature can also include a sleeve to align the pull wire to the distal extension and/or provide a friction force against the pull wire to inhibit longitudinal movement of the distal end of the pull wire.

The present invention provides a braided implant with a retractable dual proximal layer and methods for administering the braided implant to treat aneurysms. 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 that is based on the predetermined shape and the geometry of the aneurysm in which the braid is implanted. The implant can also have a retractable dual layer at the proximal end of the device made of the same braid to provide additional coverage at the neck of the aneurysm. The dual layer can be pressed distally into a first implanted portion of the tubular braid, moving the first portion of the tubular braid towards the distal portion of an aneurysm wall so that the implant can partially or completely occlude an aneurysm neck.

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 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.

An endovascular device includes a catheter and a detachment mechanism that comprises a shape memory material located at a distal end of the catheter. The device further includes a detachable tip component secured by the detachment mechanism, wherein the detachment mechanism is configured such that application of electricity to the detachment mechanism causes the detachment mechanism to open and release the detachable tip component.

A bristle device for delivery into a body lumen comprises a longitudinally extending stem 1 and a plurality of bristles extending generally outwardly from the stem for anchoring the device in a body lumen. There may be at least two bristle segments and in some cases there are flexible sections between the segments. The flexible sections articulate to enable the device to pass through a catheter placed in a tortuous anatomy or to be deployed in a curved vessel, or across a bifurcation. In some cases at least some of the bristle segments are spaced-apart to accommodate bending of the bristles.

A parent artery occlusion (PAO) device which provides for immediate occlusion of a cerebral artery to isolate a defect. The PAO device includes a self-expanding wire-frame prolate structure which is partially covered with an ePTFE membrane.

Disclosed herein are various exemplary systems and methods for deploying an implant to a target location of a body vessel. The delivery member can include a tubular body including a lumen and compressed distal portion. The delivery member can include a loop wire with a loop opening positioned approximate the compressed distal portion. The delivery member can include a pull wire that has a proximal pull wire portion and a distal pull wire portion connected by a suture linkage. The suture linkage can include a proximal suture knot engaged to the proximal pull wire portion and a distal suture knot engaged to the distal pull wire portion. Pull wire beads positioned on the proximal pull wire and distal pull wire portion can retain the suture knots during proximal translation of the pull wire. The suture linkage can include slack that is effective to prevent premature deployment of the implant.

A detachment system for delivering an embolic coil implant to a treatment site is provided. A pull wire through a lumen of the detachment system that engages a loop wire can include a slack section. The slack section can be one or more bends, a spiral coil, or a stretchable material. The slack section is effective to inhibit premature detachment of the implantable medical device by inhibiting movement of the distal end of the pull wire when the detachment system is traversing a microcatheter.

A detachment system for delivering an embolic coil implant to a treatment site is provided. A loop wire that is looped over a pull wire of the system can include one or more twists to increase frictional resistance against the pull wire. The additional resistance decreases likelihood of premature deployment of the embolic coil prior to the detachment system reaching the treatment site.