A medical assembly is disclosed comprises a stent and a catheter having a balloon, wherein the coefficient of friction and/or the adhesion at the stent/balloon interface are reduced.

An annular mesh expandable radially from a compact diameter to a radially-expanded deployed disposition in which the mesh is capable of sustaining a radially outwardly directed resistive force even when flexing its longitudinal axis out of a straight line, the mesh being composed of stenting struts, the stenting struts being arranged in a plurality of zig-zag strings around the circumference of the lumen, with occasional connector struts joining adjacent strings to create a closed circumference unit cell between two such connector struts and two adjacent connected strings there being a plurality of such unit cells arranged in sequence around the circumference between said two adjacent strings; and characterized in that there is a non-constant increment of strut length, serving to displace along the longitudinal axis each unit cell relative to the circumferentially next adjacent unit cell.

A stent includes a plurality of rings which form a tubular scaffold. The rings include an elongation mechanism which allows for further expansion of the stent.

Implantable stents that include strips that are each comprised of main struts connected by first connectors, and adjacent strips are connected by second connectors. The strut connectors have a structure, including areas of expanded or reduced width or thickness, to account for venous applications. When used for venous applications, the stents convey benefit from configurations that improve flexibility (due to the greater elasticity of venous applications) while maintaining enough stiffness to resist pressure on the venous structure in selected areas (such as for the May-Thurner syndrome). The stents include particular structural characteristics that are particularly advantageous for (although not limited to) venous applications.

A stent-graft comprises: a graft defining an elongate lumen having a longitudinal axis; an external stent having a plurality of struts and apices between the struts, the apices including proximal apices and distal apices; a set of proximal sutured knots, the proximal sutured knots securing the proximal apices of the stent to the graft; a set of distal sutured knots, the distal sutured knots securing the distal apices of the stent to the graft; and a plurality of intermediate sutured knots, formed along a continuous suture, the continuous suture including a plurality of bridging portions, the bridging portions bridging between neighbouring struts of the stent, the intermediate sutured knots securing struts of the stent to the graft.

A stent according to the invention includes: a strut extending in a predetermined direction; a first protrusion provided on the strut, the first protrusion being substantially L-shaped and extending in a direction away from the strut and in a direction toward a distal side in the predetermined direction; a second protrusion that is provided on the strut and located distal to the first protrusion, the second protrusion being substantially L-shaped, extending in a direction away from the strut and in a direction toward a proximal side in the predetermined direction, and having a tip spaced apart from a tip of the first protrusion; and an opaque member being substantially tubular and highly opaque to radiation, the opaque member having two end portions in which the first and second protrusions are inserted, respectively.

An implant includes an openwork, hollow-cylindrical main body assembled from a plurality of openwork, hollow-cylindrical segments arranged in succession in a longitudinal direction, the segments being connected to one another. The segments included two terminal segments arranged at opposite longitudinal ends of the main body and at least one inner segment between the two terminal segments. Each of the terminal and inner segments has a plurality of bars that form a circumferential meandering structure with maximum points and minimum points. The main body is configured to assume a compressed state and an expanded state.

The meandering structure of at least one of the two terminal segments has a smaller number of minimum points than the at least one inner segment.

Devices that can be delivered into a vascular system to divert flow are disclose herein. According to some embodiments, devices are provided for treating aneurysms by diverting flow. An expandable device can comprise, for example, first a plurality of strut regions and a plurality of bridge regions. Each of the bridge regions may connect a first strut of a first strut region to a second strut of a second strut region. The first strut region may comprise a first plurality of apices defining a first circumferential plane, and the second strut region may comprise a second plurality of apices defining a second circumferential plane. A first curved segment of the bridge may extend across the first circumferential plane towards the first strut region, and a second curved segment of the bridge may extend across the second circumferential plane towards the second strut region.

A stent (scaffold) or other luminal prosthesis comprising circumferential structural elements which provide high strength after deployment and allows for scaffold to uncage, and/or allow for scaffold or luminal expansion thereafter. The circumferential scaffold is typically formed from non-degradable material and will be modified to expand and/or uncage after deployment.

A delivery device can provide sequential delivery of a plurality of intraluminal devices or tacks held in a compressed state on the delivery device. Delivery platforms on the delivery device can hold a tack in a compressed position and be positioned between annular pusher bands that may also be radiopaque markers. The annular pusher bands can be made of wire or sections of material to increase flexibility while remaining radiopacity. A post deployment dilation device can be included. The post deployment dilation device can be a plurality of expansion filaments, a bellows, or a balloon. A tack deployment method can include allowing a self-expanding tack to expand, aligning the post deployment dilation device under the tack, and causing the post deployment dilation device to expand radial to push outward on the tack.