Both monopolar and bipolar surgical electrodes operate by connecting to a high-frequency electrosurgical unit and are used to cut and coagulate tissue. What are the differences between them?
Monopolar surgical electrodes, also known as ablation electrodes, electrosurgical pen, or electrocoagulation cutter, are medical consumables used to connect to a high-frequency electrosurgical unit for cutting and coagulation during surgery. They primarily consist of an electrode tip, an insulating sleeve, a surgical handle, a manual push-button switch, a cable, and a surgical connector.
Monopolar surgical electrodes use high-frequency current to cut and coagulate tissue. During surgery, a negative plate (neutral electrode) is typically applied to the patient to safely disperse the current.
Monopolar surgical electrodes come in a variety of shapes, sizes, and functions to suit different surgical sites and tissue types. For example, retractable pen blades can accommodate both deep and shallow surgeries, smoke pen blades can simultaneously absorb smoke during surgery, and cryogenic condensation blades can perform superficial incisions.
Monopolar surgical electrodes are widely used in various surgical fields, including general surgery, orthopedics, neurosurgery, and gynecology.
Bipolar surgical electrodes, also known as bipolar electrocoagulation forceps, consist of four main components: a bipolar body, a forceps body, an insulating sleeve, and a plug. The tail end of the bipolar body connects to the electrode holder, which features a high-frequency input plug for connecting to high-frequency surgical equipment. The bipolar body is insulated to ensure safety during use.
Bipolar surgical electrodes operate based on the principle of electrothermal coagulation. High-frequency current generates intense heat in a tiny area between the electrode and tissue, instantly coagulating the tissue to achieve hemostasis or incision. The current output duration and intensity can be controlled, allowing precise control of the coagulation area. They are available in straight and spear-shaped styles, with customizable lengths and tip sizes.
Bipolar surgical electrodes are widely used in various surgical procedures, such as cardiac surgery, neurosurgery, gynecological surgery, and ophthalmic surgery, for localized tissue coagulation and cutting.
When using bipolar surgical electrodes, the negative electrode is not required.