自1980年Maiman制成第一台红宝石激光器以来,激光便发展成为一门应用十分广泛的科学技术并已应用于医学各科。应用于医疗的激光可因作用原理和使用方式的不同,大体分为激光刀,激光凝固器,激光照射器,激光内窥镜和微形手术刀五种。在外科用的激光有三种:即CO_2激光,氩激光和Nd:YAG激光(掺钕钇铝石榴石)。激光刀 Since 1980, Maiman made the first ruby ​​laser, the laser has developed into a very wide range of science and technology and has been applied to medical disciplines. The laser used in medical treatment can be divided into five kinds, such as laser knife, laser coagulator, laser irradiator, laser endoscope and micro-scalpel, due to the difference of action principle and use mode. There are three types of laser used in surgery: CO 2 laser, argon laser and Nd: YAG laser (neodymium-doped yttrium aluminum garnet). Laser knife