FLEXIBLE STENT Russian patent published in 2021 - IPC A61F2/90 

FIELD: medical equipment.

SUBSTANCE: invention relates to medical equipment, namely to a flexible stent that is inserted into the luminal structure of a living organism to expand the lumen or is extracted from the luminal structure. The flexible stent contains annular elements having a wave-like structure and located side by side in the axial direction, and connecting elements connecting adjacent annular elements. When viewed in the radial direction perpendicular to the axial direction, the circumferential direction of the annular element is inclined relatively to the radial direction. Non-transparent elements that are impervious to radiation, such as X-rays, are made in annular elements, or are made in annular elements and adjacent to the connecting elements, or are made in annular elements and adjacent to the specified elements and connecting elements, or adjacent to the connecting elements. The specified non-transparent elements are uniformly located in the specified circumferential and/or axial direction and are uniformly located in the peripheral direction of the flexible stent. Each annular element has such a shape that the wave-like elements, which are formed by the connection of two branches at the top and which are essentially V-shaped, are connected in the peripheral direction. Non-transparent elements are arranged in annular elements and/or adjacent to annular elements or connecting elements by selecting one or more configurations from an insertion configuration in which non-transparent elements are placed in holes or inserted through holes made in annular elements, a winding configuration in which non-transparent elements are wound on annular elements or connecting elements, and a vertex engagement configuration in which non-transparent elements are attached to the vertices of wave-like elements.

EFFECT: objective of the invention is to create a flexible stent that can further improve the usability of the stent by further improving the visibility of the non-transparent element located in the stent.

5 cl, 86 dwg