On March, 5th, 2006, Inner antrum urinary surgery proseminar and inner antrum urinary surgery class of the three provinces in northeast closed its purdah in Heilongjiang province. Professor Na Yanqun, Professor Li Shuqiang, Professor Li Xun, Professor Zhang Xu and Professor Gao Xin came to the meeting for instructing. This meeting has promoted the development of inner antrum urinary surgery in the three northeast provinces and accelerated the academic communication of urinary surgery in the three northeast provinces.

       In the meeting, all the holmium laser operation shows were performed excellently by Accu-Tech holmium laser, including Jingpi kidney mirror, ureter straitness, etc., displaying functions of cutting parenchyma and breaking calculuss with holmium laser all-aroundly. Accu-Tech holmium laser won the wide recognition from both operation performers and viewing and emulating physicians.