STENT VASCULAR INTERVENTION DEVICE AND METHOD

摘要

The present invention relates to a stent including a variable porosity, tubular structure having pores defined by structural surfaces. The tubular structure has a low porosity region on a path around the tubular structure, where the low porosity region is less porous than other regions located on the path and fully or partially obstructs passage of fluid. The low porosity region is larger than the structural surfaces between adjacent pores. Also disclosed is a method of altering blood flow within and near an opening of a defective blood vessel involving deploying the above stent of the present invention in a defective blood vessel so that the low porosity region is aligned to and in contact with an opening in the defective blood vessel, thereby altering blood flow within and near the opening of the defective blood vessel.