Laparoscopic surgery need electric coagulation forceps, but coagulation forceps power electricity in the use process size is more difficult to adjust, control is bad to can cause thermal damage to the surrounding tissue, is not conducive to ensure the safety of patients, and even extend the length of hospital stay. Bipolar electric coagulation forceps because of its simple operation, blood coagulation is fast, cheap, is the most widely, economic and effective hemostatic instruments, favored by laparoscopic surgery doctors. But in the use of high frequency current generated in the process of thermal diffusion has a certain local tissue thermal damage, wound tissue after solidification of eschar easy adhesion in instrument was torn off, lead to bleeding seriously affect the surgical field clear. Eschar also makes higher resistance, lower efficiency of the bleeding At the same time, the smoke generated in the electric coagulation process leads to blurred lens and unclear surgical field, and the surgeon needs to repeatedly wipe the lens and empty the abdominal cavity, which all result in prolonged operation time
