An evaporation source includes a crucible chamber, a crucible, a driving unit, a flame jetting unit and an electron-beam emitting unit. The devices and techniques relate particularly to, but are not limited to, modifying and maintaining a configuration of a PFO occluder made from a polymer tube. The main support frame is connected to at least one of the first and second arm portions to fixedly connect the main support frame to the sofa frame. Once received, the standard metering reading is decoded.