SPIRAL HYBRID STENT Russian patent published in 2015 - IPC A61F2/88 A61F2/91 

FIELD: medicine.

SUBSTANCE: invention refers to medical equipment, namely to stents representing intraluminal prostheses implanted into body vessels, e.g. blood vessels, for supporting and keeping the vessels closed and for fixing and holding other prostheses in the vessels. The stent comprises a basic coiled stent component and a brace holding the coiled structure of the basic stent component. The basic stent component comprises a first rough side edge, a second rough side edge, a first end edge and a second end edge. The first side edge is connected to the second side edge. Each of the end edges is wavelike-contoured and comprises straight cylinders on long ends of the stent. According to the first embodiment of the basic stent component, the first end edge has irregularities, first and second edges, connected to the first side edge and inclined at an oblique angle thereto. According to the second embodiment of the basic stent component, the first side edge has irregularities connected to the first end edge having irregularities. The first end edge extends at an oblique angle towards the above first side edge. The first side and first end edges has a wavelike contour braced cross bars. At least one bar has a cell structure, while a width of the above braces is less than a width of at least one bar containing the cell structure. A method for providing the basic stent component according to the first and second embodiments consists in coiling the basic stent component along the long axis and closing the first end of the first end edge with the second edge of the first end edge for forming the straight cylinder in relation to the long axis of the stent.

EFFECT: stent has a good radial strength and a high degree of longitudinal flexibility, while a making process is simple and low-cost with no increase of manufacturing defects.

38 cl, 9 dwg