The Medtronic ClosureFast™ CF7-7-100 is a sterile, single-use endovenous radiofrequency ablation catheter with a 100 cm insertable length and a 7 cm heating element. It uses radiofrequency-generated heat to coagulate and close targeted blood vessels in patients with superficial vein reflux. Designed for use with a compatible ClosureRFG™ generator, the catheter requires a minimum 7 Fr introducer sheath and accommodates a 0.025-inch guidewire. Use in accordance with the manufacturer’s instructions.