STENT SYSTEM FOR TREATMENT OF DIFFUSE LESIONS OF ARTERIES WITH BIFURCATION Russian patent published in 2023 - IPC A61F2/91 A61F2/954 A61F2/958 

FIELD: medical devices.

SUBSTANCE: invention relates to a medical device, more specifically to a stent system for the treatment of diffuse lesions of coronary arteries with bifurcation. The stent system (50) for the treatment of diffuse lesions of coronary arteries with bifurcation contains a balloon catheter (200a) and a stent (100) of a predetermined length. The balloon catheter (200a) includes a balloon (200). The balloon (200) contains a proximal zone, a transition zone and a distal zone. The proximal zone, transition zone and distal zone have correspondingly gradually decreasing diameters. A stent (100) of a predetermined length contains a main branch segment, a transition segment, and a side branch segment. Main branch segment connected to the transition segment through a row of first connectors and a row of second connectors, the row of first connectors including S-shaped links slightly inclined in a predetermined direction, and the second connectors including double S-shaped links. The transition segment includes rows of elongated elements connected to each other. Lateral branch segment includes frame elements, interconnected by at least one non-linear S-shaped link and at least one Y-shaped connector. The stent (100) has an expanded state and a compressed state. The stent (100) is installed on top of the balloon (200) in a compressed state such that the main branch segment is installed over the proximal zone, the transition segment is installed over the transition zone, and the side branch segment is installed over the distal zone, while in the expanded state the main branch segment is the transition segment and the side branch segment of the stent (100) correspond to the corresponding areas of the balloon (200).

EFFECT: invention provides better compatibility with the anatomy of the implantation site compared to conventional stents, ensures minimal trauma as a result of implantation at the implantation site, and also minimizes the probability of initial restenosis.

10 cl, 6 dwg, 2 ex