A cutting apparatus includes a workpiece supplying member, a positioning mechanism, a transportation robot, and an annular cutting blade. The memory cell array may include a plurality of sub-array blocks, and a fuse box may include a plurality of fuse groups, each group corresponding to a sub-array block. The medical devices and coatings of the present invention can also be used for in situ controlled release delivery of additional bioactive agents and are useful for treating or preventing medical conditions such as restenosis, aneurysms and vulnerable plaque. The properties of the exiting light beam are determined by the optical conduit and the bending of the optical conduit, thereby scanning the beam.