The term diathermy means “electrically induced heat” and
is commonly used for muscle relaxation. It is also a method
of heating tissue electromagnetically or ultrasonically for
therapeutic purposes in medicine.
ELECTROSURGICAL UNIT (ESU)
Electrosurgical unit is a medical device that applies a highfrequency
electric current to biological tissue as a means
to cut, coagulate, dehydrate, or fulgurate tissue.