Zone e.g. varicose vein, treating device, has ultrasonic transducer which emits ultrasonic wave beam towards zone to be treated such as varicose veins, where beam creates focal spot that has length that is less than length of transducer

摘要

The device has an ultrasonic transducer (11) which emits ultrasonic wave beam towards a zone to be treated such as varicose veins. The beam contains a spherical wave surface and creates an elongated focal spot on the zone to be treated perpendicular to the direction of propagation of the ultrasonic waves. The focal spot has a length that is less than the length of the transducer.