激光刀是近年来激光技术应用于外科手术领域出现的新型医疗器械。主要是利用激光束发散角小、功率密度强、因而具有很高亮度的特点,通过热效应,对生物组织进行凝结,汽化和切割,具有较好的临床效果。用作光刀的激光器主要有连续运转的二氧化碳激光器,氩离子激光器和掺钕钇铝石榴石(Nα~(3+)·YAG)目前二氧化碳 Laser knife in recent years, laser technology used in the field of surgical emerge new medical equipment. The utility model mainly utilizes the advantages of small divergence angle of laser beam, strong power density and high brightness, and has the advantages of clinical effect by thermal effect on coagulation, vaporization and cutting of biological tissues. The lasers used as optical cleaners are mainly carbon dioxide lasers which are continuously operated, argon ion lasers and neodymium-doped yttrium aluminum garnet (Nα ~ (3+) · YAG). Current carbon dioxide