2025年 · 第63卷第03期

varicose vein of lower extremity (VVLE) is a common vascular surgical disease. The cause of the disease may be the change of axial main vein valve function, resulting in valve regurgitation, increased venous pressure and superficial venous lumen dilation, resulting in tortuous veins of lower extremity, exudate entering the surrounding subcutaneous tissue, aggravating tissue edema and lymphatic circulation disorder, and then leading to various clinical manifestations^［1］。 It is more common in people who are sedentary and standing for a long time, have a family history of VVLE and work with weight for a long time. The early symptoms of the patient were mild, manifested as limb soreness and discomfort, and vermiform protrusions of superficial veins of lower limbs; If the disease progresses, complications such as edema, pigmentation, skin lipid sclerosis, and even superficial thromboflebitis and venous ulcer may occur, which seriously affect the daily activities and quality of life of patients^［2］。 The main treatment modalities for lower extremity varicose veins include medication, pressure therapy, sclerosing agent injection therapy, and surgery. The National Institute of Health and Clinical Demonstration Clinical Practice Guidelines suggest that intravenous thermal ablation should be given priority to varicose veins and main valve regurgitation, followed by ultrasound-guided sclerotherapy, and finally high ligation and stripping surgery^［3］。 Intracavitary radiofrequency ablation has been routinely carried out in many medical centers, but most of them use imported products and are expensive, which limits the development in some parts of the country. We conducted a preliminary study on the safety and efficacy of a new domestic endovenous radiofrequency closure system for the treatment of large saphenous varices of lower limbs, in the hope of providing more options for patients with lower limb varices.