Description Whether you're suffering from painful, swollen legs or are just vain about your veins, VNUS Medical Technologies can zap your gams back to health. The company's Closure system treats venous reflux disease, a leg condition that can lead to varicose veins, swelling, and skin ulcers. The minimally invasive system uses catheters and a radio-frequency generator to close the diseased veins, usually in an outpatient procedure. VNUS Medical Technologies sells and rents its Closure systems and accessories to interventional radiologists, general and vascular surgeons, and phlebologists. The company has agreed to be acquired by Conidian.