This particular standard specifies the requirements for safety of ultrasonic physiotherapy equipment used in medical practice, as defined in Subclause 2.1.101, hereinafter referrred to as equipment. It does not apply to: - equipment in which a tool is driven by ultrasound (for example equipment used in surgery or dentistry); - equipment in which focused ultrasound pulse waves are used to destroy conglomerates such as stones in the kidneys or the bladder (lithotrites) (for information refer to IEC 60601-2-36); - ultrasonic physiotherapy equipment in which focused ultrasound pulse waves are used.