According to an aspect, an implant for vascular treatment may include a wire having a first section and a second section, the first section and the second section each movable from a delivery state to a deployed state in response to removal of external pressure on the wire, the first section, in the deployed state, including at least one loop securable to a target anatomical location of a subject, the second section, in the deployed state, having a nonlinear shape positionable to at least partially occupy an anatomical vessel with the first section secured to the target anatomical location, and the first section stiffer than the second section.

An implantable embolic device having a stretch-resistant member passing therethrough that also serves as a tether for connecting the device to a delivery system. The stretch-resistant member is attached at a proximal and distal end of the device and extends proximally to the delivery device. The proximal attachment point serves to isolate a distal, stretch resisting segment of the member from axial tension placed on a proximal, connecting section of the member. Thus, the portion of the stretch-resistant member being used to connect the embolic device to a delivery device may be placed under tension without placing tension or distorting the implant.

Devices and methods for treatment of a patient's vasculature are described. Embodiments may include a device that includes a plurality of permeable shells connected by a plurality of coils, each coil connecting at least one pair of permeable shells. The plurality of coils may include an inert hydrogel core that absorbs water.

A system and method of delivering and detaching an implant within a body of a patient is described. A tether connects an implant with a delivery device. The delivery device includes a heater coil through which the tether passes. The inner diameter of the heater coil is about the same size or slightly larger than the outer diameter of the tether, allowing the tether to more efficiently break the tether during delivery.

A system and method of delivering and detaching an implant within a body of a patient is described. A tether connects an implant with a delivery device. The delivery device includes a heater through which the tether passes. The inner lumen of the delivery system pusher may accommodate the lead wires which connect to the heater.

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.

A delivery system for delivering and deploying an implantable medical device is presented that includes a delivery member having a flexible distal portion. The deliver member can include a proximal hypotube, a flexible coil extending distally from the proximal hypotube, a compressible distal hypotube extending distally from the flexible coil, a sleeve extending along the flexible coil, and a loop wire. The loop wire can be effective to inhibit longitudinal elongation of the flexible coil. The sleeve can be effective to inhibit radial expansion of the flexible coil.

Described are systems for delivering embolic coil devices, and components useful in such systems. The systems include a flexible elongate delivery shaft having a distal region and an embolic coil device detachably connected to the distal region of the elongate delivery shaft. In some forms, as detachably connected, at least some of the coil windings of the embolic coil device, such as those in a proximal segment of the coil windings, are in a resiliently longitudinally compressed condition. When the embolic coil device is detached from the delivery shaft, the coil windings resiliently move to a longitudinally extended condition, where the coil windings in the longitudinally extended condition are more open than they are in the resiliently longitudinally compressed condition. In some forms, the systems have a coil detachment interface at a distal region of a flexible elongate delivery shaft. The coil detachment interface includes a distal tubular segment and a bridge segment proximal of the distal tubular segment. The bridge segment includes a bridge wall or other bridge component defining an upper surface, a lower surface, a proximally-facing edge spanning between the upper surface and the lower surface, and a distally-facing edge spanning between the upper surface and the lower surface. The bridge segment further defines a lumen between the lower surface of the bridge wall or other bridge component and a bottom wall of the bridge segment. Also described are embolic coil devices and bridge members configured for use in such systems.

In an indwelling device for embolization comprising a coil portion (11) having a proximal side and a distal side and having a lumen extending in a longitudinal direction, and a stretch-resistant member (20) disposed in the lumen, a spring constant of the coil portion (11) is 1.0 N/mm or less, the stretch-resistant member (20) has a waveform, and a wave height, which is a distance between peaks on an inner side of the waveform of the stretch-resistant member (20), is 35 m or larger and smaller than an inner diameter of the coil portion (11), in order to provide the indwelling device for embolization that suppresses changes in dimension of the coil portion (11) during sterilization.

In some examples, an embolization device includes multiple sections with three-dimensional non-helical structures when deployed at a vascular site. The multiple sections include a first section and one or more second sections that are smaller than the first section. The first section may have a deployed structure configured to anchor the device at a vascular site (e.g., a blood vessel) of a patient while each of the one or more second sections may be formed from loops that configured to pack and obstruct the vascular site. In some cases, the embolization device also includes a third section having a deployed configuration with multiple helical windings or loops is configured to anchor the embolization device at the vascular site.