... , power 5W (30J/cm) in continuous mode, set the laser ready, check the red aiming beam.(2)Patient treatment position: supine.(3 ... vein end to heart and block the distalend vein end with the vessel forceps.(5) Tie a tourniquet above the medial ... , find the great saphenous vein, use the 18G puncture needle(with the vein remaining needle) insert the great saphenous vein, get ...