A disposable diathermy pencil, also known as a single-use electrosurgical handpiece, is a sterile, lightweight instrument used to cut, coagulate, or cauterize tissue during surgery. It delivers high-frequency electrical current from an electrosurgical generator (ESU) to the patient, allowing precise surgical dissection and hemostasis.
Disposable types are designed for one-time sterile use — eliminating reprocessing and ensuring maximum infection control.