Intravascular Functional Element and System for such a Functional Element

An intravascular functional element with a tubular grid structure (12) that has a wire (10) or several wires (10) respectively of an alloy with nickel and titanium as alloying elements, wherein a mixed oxide layer with a layer thickness of 15 nm to 100 nm and containing TiO2 and at least one nitride, especially titanium oxynitride and/or titanium nitride, is formed on the surface of the wire or on the surface of the wires (10)/of the wires (10), wherein the grid structure forms cells of mutually crossing wires (10) or wire segments of the wire (10) in longitudinal direction and in circumferential direction respectively and in circumferential direction there are disposed at least 6 cells, especially at least 12 cells, especially at least 16 cells, especially at least 24 cells, especially at least 36 cells, especially at least 48 cells, wherein, for each of the lower limits mentioned in the foregoing, the angle (α) between the wire segments or wires (10) and a longitudinal axis oriented at least in portions in longitudinal direction of the grid structure is respectively at least 45°, especially at least 50°, especially at least 55°, especially at least 60°, especially at least 65°, especially at least 70°, especially at least 75°.