Surgical stent having micro-geometric patterned surface

摘要

A surgical stent having thereon micro-geometric patterned surface and the method of use for inhibiting smooth muscle cell growth into stent lumen are disclosed. The surgical stent has a generally cylindrical stent frame configured to be implanted into a body lumen, and the stent frame has thereon a micro-geometric patterned surface which includes a multiplicity of microgrooves distributed in a predetermined pattern. Each of the microgrooves has a width in a range of from about 4 to about 40 microns and a depth in a range of from about 4 to about 40 microns. The surgical stent can further include drug wells, and the surgical stent can have a biocompatible chemical compound, such as thrombosis inhibitor or cell growth inhibitor, embedded in the microgrooves or drug wells.