Treatment of varicose veins of the lower extremities. E. Unger (Zentr. f. Chir., 1927, no. 51)

The author exposes the v. saphenam at its inflow into the v. femoralis, dissects it, and introduces a ureteral catheter into its distal end (the author managed to pass, in nonthrombosed vessels with a large lumen, below the knee joint to the lower third of the shin); then through this catheter is introduced, using a 10-20 gm syringe, 20% saline or glucose solution, and the catheter is carefully extracted at this time.