STENT Russian patent published in 2023 - IPC A61F2/915 

FIELD: implantation.

SUBSTANCE: group of inventions relates to stents for transluminal implantation into hollow organs, in particular into blood vessels, ureters, oesophagus, colon, duodenum or biliary tract, for recanalization of hollow organs that have changed as a result of disease. In accordance with the first embodiment, the stent comprises a substantially tubular body that extends in the axial direction and is configured to change from a compressed state with a first cross-sectional diameter to an expanded state with an enlarged, second cross-sectional diameter. The stent comprises a plurality of cells, which are formed by spacer-shaped envelope elements forming a tubular body and containing a bioresorbable material that comprises zinc. Enveloping elements comprise at least one support strut, passing annularly around the axial direction. The support strut has at least one V-shaped support section, in the area of the opening angle of which a longitudinal connector is placed on the support strut, which connects the support strut to at least one other support strut. The opening angle of the V-shaped support section is 90–150° when the stent has a second cross-sectional diameter. In accordance with the second embodiment of the stent, a longitudinal connector is placed on the support strut, connecting the support strut with at least one other support strut. There are no longitudinal connectors within the predetermined vessel branch region, whereas the support struts pass through the vessel branch region without interruption therein.

EFFECT: improved stent in such a way as to generate the highest possible expansion force, in particular even when the stent is made of a relatively soft material.

14 cl, 4 dwg