影响猪胰管封闭效果的电刀参数分析

高频电刀的组织热效应可以使胰腺组织表面生成焦痂,具有止血防胰瘘的效果.高频电刀机电参数对焦痂止血防胰瘘功能具有显著影响,但尚缺乏对其作用规律的深入研究.采用体外模拟试验方法,结合胰管爆破压测试和焦痂形貌研究了干燥模式下3种关键机电参数(电刀功率、作用时间和电极前端直径)对胰管封闭效果的影响规律;基于此,采用响应面分析法...

Analysis of Electrosurgical Unit Parameters on Sealing Effect of Porcine Pancreatic Duct

The tissue thermal effect of electrosurgical unit (ESU) can cause eschar on the surface of pancreatic tissue, which has the effect of hemostasis and preventing pancreatic fistula. The electro-mechanical parameters of ESU have a significant effect on the function of eschar hemostasis and preventing pancreatic fistula, but there is still a lack of in-depth study on the law of its action. In this study, three key electro-mechanical parameters, i.e. power, acting time and diameter of electrode front end, were studied in the DESICCATE mode by using in vitro simulation test method, combined with burst pressure test of pancreatic duct and eschar morphology analysis. Based on the above, the interaction between power, acting time and diameter of electrode front end was obtained by response surface analysis and the electro-mechanical parameters with the best effect of pancreatic duct sealing. The results show that the burst pressure of the pancreatic duct is at the peak value when the power is 60 W, the burst pressure of the pancreatic duct is at the peak value when the acting time is 2.00 s, and the burst pressure of the pancreatic duct is at the peak value when the diameter of the front end of the electrode is 2.00 mm. The best electro-mechanical parameters in the DESICCATE mode are: the power of electric knife is 59.39 W, the action time is 2.18 s, and the diameter of electrode front end is 2.31 mm. In addition, the diameter of the electrode front end is an independent factor affecting the pancreatic duct sealing effect, the power and acting time of the ESU have significant synergistic effect on the pancreatic duct sealing.