電気メス性能向上のための先端放電に伴う空気層の影響

抄録

In this study, we investigated the application of silicone coating to suppress adhesion of coagulated blood on the tip of an electrocautery and to suppress surgical smoke generation. The actual discharge was observed, and it was noted that when the electrode had silicone coating, small bubbles occurred near the tip during discharge. In contrast, with commercially available electrodes without coating, bubbles grew significantly, leading to the occurrence of sparks. Additionally, we simulated the electric field strength at the electrode tip, temperature increase in blood due to Joule heating, and blood flow, and calculated the position of the electric field strength with and without silicone coating. From the results of electric field strength and temperature calculations, it was suggested that the highest point of the electric field strength, when including an air layer, occurs at the interface between air and blood which is close to the electrode surface, potentially serving as a cause for spark generation.