Desirable expandable stent and technology of its manufacturing

摘要

This invention is a thrombo-resistant expandable stent (15) including a coiled tube (16), the tube (16) formed from a thin profiled metallic strip (10) having flanged opposite edges (11, 12) forming a kinematic link (17) with a small hollow bore (18), and the bore (18) accommodating a bio-absorbable local drug delivery constructive element (19). Constructive element (19) can be loaded with regulated concentrations of anti-thrombotic, anti-proliferative or other therapeutic agents for sustained local drug delivery. Upon rolling up of the tube (16) a hollow is marked in a shape of a helical groove along the geometrical axis of the stent (15). Upon expansion of the stent (15) the preliminary geometrical contour (13) of the rigid elements executed on the coiled tube (16) outward surface (21), is transformed into honeycomb cells (24) providing for the development of force according to vessel shape.