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在医用内窥镜领域,西德和美国已相继采用渗钕钇铝石榴石(Nd-YAG)激光和氩激光对消化道出血病变进行止血治疗。本文即探讨利用上述两种激光对实验狗的胃粘膜进行照射,通过分析胃壁受照后的光凝作用,寻找止血所需的最适量照射功率和时间。日本东京大学外科用日本NEC公司生产的输出功率为100瓦的SL-115型Nd-YAG激光发生器和美国LEXFL公司生产的输出功率为12瓦的295型氩激光发生器进行试验。传递激光用的石英纤维直径为400微米,外用硅橡胶包复(包复后直径为550微米),
In the field of medical endoscopy, West Germany and the United States have successively used bleeding Nd-YAG laser and argon laser to hemostasis the gastrointestinal bleeding. This article explores the use of these two lasers on the experimental dog gastric mucosa irradiation, by analyzing the photocoagulation after gastric wall irradiation, looking for the most appropriate amount of irradiation to stop bleeding power and time. Tokyo University, Japan Surgery Japan NEC company with an output of 100 watts of SL-115 type Nd-YAG laser generator and the United States LEXFL produced 12 watts of output power of 295 argon laser generator were tested. The diameter of the quartz fiber used to transmit the laser is 400 μm, the outer layer is covered with silicone rubber (the diameter is 550 μm after coating)