The present invention describes device, method and system for providing treatment for swollen vascular structures located in a body canal of a patient. The device, method and system described in here provide an easy and, practical treatment and with minimal or without disturb to the patient, including RF emission driven directly and specifically over such vascular structure, and by means of ultrasound technology verify the position of the vascular structure and whether it is closed before, during and after the RF application. The present invention is situated in the field of medical science, more precisely in treatment of vascular structures, and medical devices.