An air permeable composite article that in one embodiment includes a porous base membrane that includes a plurality of nodes and fibrils defining a plurality of interconnecting pores extending through the porous base membrane with each node and fibril having a surface. The method and apparatus has particular application in removing plaque from the carotid artery in a non-thermal manner. The mirror housing has a recess where a front surface is inwardly recessed. Therefore, it is possible to effectively utilize the lighting luminous flux emitted from one valve in correspondence to a light distribution pattern.