INTRAVASCULAR STENT (EMBODIMENTS) Russian patent published in 2024 - IPC A61F2/89 A61F2/915 

FIELD: medicine.

SUBSTANCE: invention refers to medical equipment, namely to lifelong implantable endoluminal prostheses, more specifically to balloon-expandable metal stents. Intravascular stent, made with possibility of transition from compressed configuration to expanded configuration, characterized by nominal diameter of stent, has a longitudinal axis, central section and end sections; includes continuous crowns, each of which contains the first vertices and the second vertices connected by spacers into a sinusoidal ring. Each vertex is characterized by a width measured along the longitudinal axis of the stent from the inner radius of the vertex to the outer radius of the vertex. Vertices have essentially the same rounded shape. Adjacent crowns are interconnected by links to provide a continuous stent structure. Number of webs between two adjacent crowns in end sections is greater than the number of webs between two adjacent crowns in central section. Within the central section, the webs connecting the crown with adjacent crowns lie on different longitudinal lines parallel to the longitudinal axis of the stent. Two adjacent crowns are connected by two or three webs within the central section. Bridges have a simple straight shape. According to the second embodiment of the stent, the end sections include crowns in which the width of the apexes exceeds the width of the apexes of the crowns of the central section. Ratio of the nominal diameter to the number of the first vertices or the second vertices in one crown is 0.25–0.45. Length of spacers is 0.55–1.40 mm.

EFFECT: creation of a stent with the possibility of transluminal delivery to the implantation site, with provision of the predicted stent expansion during implantation, with improved visualization capability, with reliable fixation of the stent after implantation, with reduced traumatic risk for the patient’s vessels, with the possibility of subsequent angioplasty in the place of stent implantation.

13 cl, 6 dwg, 2 tbl, 2 ex