| 摘要 |
<p>A stent (1) comprises a radially expandable tubular body made up of elements (2, 3) defining a reticular structure. The aforesaid elements (2, 3) constitute respective branches of the reticular structure and are at least locally provided with recesses (4) that are able to receive agents for the treatment of the site of implant of the stent (1). Where present, the aforesaid recesses (4) occupy a substantial portion, typically between 10% and 60% of the area of the overall cross-sectional area of the respective element. The recesses are made in such a way as to leave substantially unaltered the bending moments of the respective elements (3). The recesses (4) may be present continuously in a discontinuous way on said elements (2, 3) of said stent, the solutions of continuity, i.e., with solutions of continuity in the areas of the stent subjected to deformation during the radial expansion of the stent (1) itself. The recesses (4) may also have a general well-like conformation that enables distribution thereof in a selectively differentiated way on the surface of the stent (1). <IMAGE> <IMAGE></p> |
