Cautery pencil, also known as an electrocautery pencil or simply a cautery pen, is a medical instrument used in surgical procedures to cut or coagulate tissue. It is a handheld device that resembles a pencil and is equipped with an electrode tip. The electrode tip can generate high-frequency electrical currents that are used for various purposes during surgery.

It’s important to note that cautery pencils require proper training for safe and effective use, and their application is typically performed by trained medical professionals in a controlled surgical environment.