An Electrosurgical Unit (ESU) is a medical device used during surgical procedures to cut tissue and coagulate blood vessels. It generates high-frequency electrical currents that can precisely target and manipulate tissue, minimizing damage to surrounding areas. This technology is essential in various surgeries, including those performed by surgeons in operating rooms. The ESU typically consists of a generator, an active electrode, and a return electrode. The active electrode is used to deliver the electrical current, while the return electrode safely disperses the current back to the machine. This system enhances surgical efficiency and reduces bleeding, contributing to better patient outcomes.