Why on earth is it not made clear on any of the informational video's (VNUS, Venaseal, Varithena Etc.) as to whether the catheter is inserted at the ankle-upward, or the knee-upward? And if they insert it at the knee-upward, then how does that resolve the diseased GSV which also runs from the knee through the foot?
It's cute how this site instructs us to be specific, but the fault lies with medical instrument producers! They are the ones who are "not specific".