The study of laparoscopic electrosurgical instruments on thermal effect of uterine tissues

Purpose It is to compare the thermal damage on myometrium tissue caused by five electrosurgical instruments, including monopolar forceps, bipolar forceps, PK scalpel, Ligasure and BiClamp. Methods Normal myometrium in vitro was collected and electric coagulation was conducted with five electrosurgical instruments under corresponding powers. The zones of thermal injury (ZTI) in each coagulation sites were examined histologically, while the width and depth of thermal damage were measured. Results 1. There were significant differences among various groups’ widths of ZTI of myometrium ( P