The coronary stent with release of Sirolimus Angiolite from LVD Biotech SL is a stent manufactured out of a cobalt-chrome alloy known as L605, to which a coating composed of a mixture of sirolimus and biostable polymers has been applied.
The stent arrives pre-assembled in the release system, which will be implanted over the coronary lesion to be treated, through expansion of a balloon located at the distal end of the catheter.
The stent is manufactured from a metallic tube cut by laser. Subsequently, it is subjected to various treatments that give the surface a smooth and shiny finish. The stent’s design is based on the interlinking of cells in a circumferential direction, connected to each other in an axial direction using connection points in order to obtain different longitudinal configurations. In addition, the adaptation of the number of cells in radial direction allows the stent to be expanded to different diameters. It has an open-celled design.
The stent’s release system is a rapid exchange balloon catheter also known as “RX”, due to its simple proximal lumen configuration as well as double distal coaxial lumen. The catheter has an inflatable segment (balloon) at its furthest distal part. The balloon is conceived in order to reach different diameters and lengths so that it connects to the stent in its different configurations, in attendance to the range of lesions to be treated. Before its positioning, the balloon is folded and the stent is compressed over it. Some radiopaque markings outline the length of the stent, making viewing easier through fluoroscopy. When the balloon reaches the lesion, it inflates and dilates the stent, which is placed against the artery. Then the balloon is deflated and withdrawn, and the stent remains permanently implanted.
The catheter’s distal part is coated with a durable hydrophilic coating that minimises friction and improves the catheter’s navigability.