Abstract: An expandable tube for deployment within a blood vessel is disclosed. In one arrangement, the tube comprises an elongate frame that is reversibly switchable from a radially expanded and longitudinally contracted state to a radially contracted and longitudinally expanded state. The frame comprises a plurality of longitudinally deformable elements for providing longitudinal expansion and contraction of the frame and a plurality of circumferentially deformable elements for providing radial expansion and contraction of the frame. The longitudinally deformable elements can be expanded or contracted longitudinally substantially without any change in the shape of the circumferentially deformable elements. The plurality of circumferentially deformable elements comprises a plurality of sets of circumferentially deformable elements. Each set of circumferentially deformable elements forms a closed ring around an axis of elongation of the frame.

Abstract: There is provided an expandable tube for deployment within a blood vessel, the expandable tube being reversibly switchable from a radially contracted and longitudinally expanded state to a radially expanded and longitudinally contracted state, the expandable tube comprising a first frame comprising braided filament, and a second frame connected to the first frame and overlapping with the first frame in the radial direction, the second frame comprising a network of non-overlapping elements, the non-overlapping elements being non-overlapping with respect to each other in the radial direction, wherein the network of non-overlapping elements has an interconnected structure comprising a plurality of sub-units that repeat in the longitudinal direction.

Abstract: In one arrangement, there is provided a delivery system for deploying a self-expanding tube into a blood vessel, comprising a tubular member configured for insertion into the blood vessel, an elongate body extending within a lumen of the tubular member, and a self-expanding tube positioned radially between the tubular member and the elongate body. The delivery system is configured to operate in a deployment mode in which there is relative movement longitudinally between the elongate body and a portion of the self-expanding tube that remains in engagement with the elongate body during retraction of the elongate body in use after at least a portion of the self-expanding tube has been deployed, retraction of the elongate body comprising longitudinal movement towards a proximal end of the delivery system of the elongate body relative to the tubular member.

Abstract: Delivery systems for deploying a self-expanding tube into a blood vessel are disclosed. In one arrangement, a tubular member is provided that is configured for insertion into the blood vessel. An elongate body extends within a lumen of the tubular member. A self-expanding tube is positioned radially between the tubular member and the elongate body. Over at least 50% of the length of the self-expanding tube, at least a portion of the self-expanding tube engages outwardly with the tubular member and inwardly with the elongate body.