The invention relates to a mesh support device (10) for supporting a breast implant, which mesh support device (10) comprises a first mesh panel (11), which comprises a first arm (31) having a length L.sub.1 and a second arm (32) having a length L.sub.2, and a second mesh panel (12), which comprises a first opening (21), which is arranged to receive the first arm (31), and a second opening (22), which is arranged to receive the second arm (32), wherein 30 mm <L.sub.1<210 mm and 30 mm L.sub.2<210 <mm.

A stent includes a main body having a plurality of rings that form a helix. Each of the plurality of rings includes a plurality of skewed v-shaped elements that each have a first leg and a second leg that is longer than the first leg. The stent further includes a first end ring and a second end ring positioned to an opposite side of the main body from the first end ring. Each of the plurality of rings of the main body is angled with respect to the first end ring and the second end ring. The stent further includes a first transitional region for connecting the first end ring to the main body, and a second transitional region for connecting the second end ring to the main body.

A vascular stent (100) comprises a plurality of wave loops. In its natural state, in two of the wave loops which are adjacent in a group, a part of a wave crest of a lower layer wave loop are in a restrained connection with a part of a wave trough of an upper layer wave loop; the other part of the wave crest of the lower layer wave loop passes through the other part of the wave trough of the upper layer wave loop, and the other part of the wave crest and the other part of the wave trough are in a non-contact mutually-suspended connection. Some of the wave crests and wave troughs of the vascular stent (100) are in the non-contact mutually-suspended connection rather than the restrained connection, so that the maximum flexibility is provided to the stent, and meanwhile, the overall stability of the stent is guaranteed. The stent (100) can maintain a good shape during both implantation and the release process, so that safety during release is ensured.

Interventional procedures on the carotid arteries are performed through a transcervical access while retrograde blood flow is established from the internal carotid artery to a venous or external location. A system for use in accessing and treating a carotid artery includes an arterial access device, a shunt fluidly connected to the arterial access device, and a flow control assembly coupled to the shunt and adapted to regulate blood flow through the shunt between at least a first blood flow state and at least a second blood flow state. The flow control assembly includes one or more components that interact with the blood flow through the shunt.

Some embodiments are directed to methods for serially expanding an artificial heart valve within a pediatric patient. For example, the artificial heart valve can be implanted into the pediatric patient during a first procedure, and then expanded during a second procedure to accommodate for the pediatric patient's growth. Some embodiments include introducing an expander into the implanted valve when the frame is expanded to a first working diameter, and then actuating the expander to expand the frame to a second working diameter greater than the first working diameter, to accommodate for the pediatric patient's growth.

A prosthetic heart valve includes an expandable annular frame having an inflow end, an outflow end, an interior, an exterior, a plurality of openings, and a longitudinal axis; a plurality of commissure supports members outside of the frame; and a plurality of quadrilateral valve leaflets each having a main body having an inflow edge and an outflow edge, and a pair of opposing leaflet tabs extending from opposite sides of the main body, each leaflet tab being paired with an adjacent leaflet tab of an adjacent leaflet, each pair of leaflets tabs extending through a respective opening of the frame and coupled to one of the commissure supports to form a commissure tab assembly, wherein each commissure tab assembly is located on the exterior of the frame and the main body of each leaflet is located on the interior of the frame.

A radially expandable, tubular stent, includes a first section having a first crush resistance force and a second section have a second crush resistance force, wherein the first crush resistance force is less than the second crush resistance force. The first section is connected to the second section to form a tube, connection of the first and second sections extending in an axial direction of the tube.

The invention relates to a mesh support device (10) for supporting abreast implant (40), wherein the mesh support device (10) comprises a first panel (11) and a second panel (12), of which at least the second panel (12) is a mesh panel (12), which consists of a large number of individual meshes, and wherein the mesh support device (10) further comprises a first arm (31), which has a length Li and is arranged at a first side of the first panel (11), and a second arm (32), which has a length L2 and is arranged at a second side of the first panel (11), the second side being opposite to the first side, wherein each of the first and second arms (31, 32) is configured to be threaded through anyone of said large number of individual meshes and the lengths L.sub.1 and L.sub.2 are chosen such that 30 mm <L.sub.1 <210 mm and 30 mm <L.sub.2 <210 mm. The invention also relates to a method for fixating the breast implant (40) in the support device (10).

The present disclosure relates to an intravascular stent, preparation method and use thereof, and the intravascular stent comprises a positioning segment and a supporting segment, the positioning segment comprising a plurality of first repeating elements, the supporting segment comprising at least two supporting units and at least one connecting unit, the supporting unit comprising a plurality of second repeating elements, the number of the first repeating elements differing from the number of the second repeating elements, a plane formed by front ends of the plurality of first repeating elements being vertical to or intersecting with the axis of the intravascular stent. The intravascular stent of the present disclosure is particularly suitable for iliac vein, with good supporting effect for iliac vein and less damage to venous wall, and can effectively avoid forming in-stent secondary thrombosis after intravascular stent implantation. Moreover, the intravascular stent of the present disclosure can be well positioned in the iliac vein to improve the accuracy of the release, and it is simple for operation. The vascular stent of the present disclosure has the advantages of simple structure, convenient production and low cost, and thereby has important practical significance and good prospect in clinical application.

Provided is an embolic protection device with dual-layer filter meshes, including an elastic base frame, a first filter mesh and a second filter mesh. The two ends of the first filter mesh are the first open end and the first closed end respectively. The distance between the first closed end and the elastic base frame is greater than the distance between the first open end and the elastic base frame. The first open end is connected with the elastic base frame, and the first filter mesh is provided with a plurality of first filtering holes. The second filter mesh is provided with a plurality of second filtering holes.