The present disclosure relates to the treatment of venous incompetence. More specifically, the present disclosure reduces the volume of chemical needed to treat incompetent veins by distorting the luminal vessel. A device for treating incompetent veins comprises a catheter disposed within a sheath and an expansion element disposed within the sheath in a compressed state and attached to the catheter, the expansion element configured such that when the sheath is retracted within a luminal vessel the expansion element expands to contact a wall of the luminal vessel, wherein expansion of the expansion element is configured to reduce a cross-sectional area of the luminal vessel. Related methods of venous incompetence are also disclosed.
