A flexible blade for use in a paddle wheel drive element is disclosed. The rotor shaft is connected to an electrical power generator. The stent also includes anchor members, which are comprised of a longitudinal leg member having a radiopaque coil disposed about the leg member, which serve to retain the stent during delivery of the stent. Methods for removing particulates andor other undesirable components from a gas stream are also provided. The inventive starting block anchor is comprised of a vacuum suction device operatively and releasably attaches to an interface that also operatively and releasably attaches to a track and field starting block of various configurations. Structures including a rectangular indentation may be formed in the end of the optical fiber.