生物组织的电切割损伤研究

Research on Electrical Cutting Injury of Biological Tissue

目的探究高频电刀不同电切割参数、手术电极结构参数和生物组织含水量对生物组织机械损伤和生物损伤的影响。方法搭建体外电切割实验装置,研究新鲜猪里脊肉组织在不同电切割参数(电切割功率、切割深度、入切角度)、手术电极结构参数和生物组织含水量情况下的机械损伤和生物损伤。结果实验结果表明,随着电切割功率、入切深度、入切角度以及接触刃面积的增加,表面焦痂粘附量会随之增大;电切割功率以及组织含水量的增加会使热量集中,加剧组织热损伤。结论高频电刀操作参数、刀具参数以及材料参数对组织电切割损伤的影响规律的揭示,可为高频电外科设备、手术电极开发及医生更好地使用手术电极提供理论和技术参考。

Objective To investigate the efects of diferent cutting parameters of electrosurgical,electrode structure and water content of biological tissue on mechanical and biological injury.Methods An experimental device was designed to study the mechanical and biological damage of fresh pork loin in vitro under diferent electric cutting parameters(electric cutting power,cutting depth,cutting angle),structural parameters of the surgical electrode,and water content of biological tissue.Results The experimental results showed that the eschar adhesion increased with the addition of electrical cutting power,cutting depth and angle,and contact edge area.The augment of electric cutting power and tissue water content could make heat concentration,and aggravate tissue thermal damage.Conclusion The paper reveals the influence rules of operating parameters,tool parameters,and material parameters of electrosurgical on tissue cutting injury,which can provide theoretical and technical reference for the development of high-frequency electrosurgical equipment,surgical electrodes,and the better use of surgical electrodes by doctors.