Objective to evaluate the safety and efficiency in pain control after laparoscopic cholecystectomy of Fentaynyl transdermal system combined with local infiltration of ropivacaine.
目的研究多瑞吉联合罗哌卡因局部浸润用于腹腔镜胆囊切除术后镇痛的效能和安全性。
2
By experimentation, comparison flame brazing's some limitations such as infiltration, working efficiency, working condition are poor and easy to burn out loop's insulating.