Small, bluish veins (spider veins and reticular veins) on the surface of the skin can look unattractive, but they are usually only of cosmetic significance. They can be removed using a liquid sclerosing agent (Aethoxysklerol or chrome alum).


In suitable patients, varicose veins can be treated with foam sclerotherapy. This involves injecting a sclerosing agent (usually an alcoholic foam solution) into the dilated vein with ultrasound guidance. The body then breaks down the veins over the course of a few weeks or months.

Whereas permanent compression therapy and surgery were once the only options for treating deeper and larger varicose veins, the introduction of laser and radiofrequency technology in recent years has given rise to a variety of new minimally invasive, 'endovenous' procedures which are gradually replacing conventional surgery.


Different procedures are available: laser, ClosureFast (Venefit®) and radio frequency. With these methods, the diseased veins are switched off with heat via a catheter and subsequently degraded by the body's own natural processes. At our practice, endovenous procedures are performed on an outpatient basis under local anaesthesia ('tumescent anaesthesia').

Closure Fast procedure - Medizin im Schauspielhaus Group Practice

Video of ClosureFast® procedure

Varicose veins - Medizin im Schauspielhaus Group Practice

Before the OP

Varicose veins - Medizin im Schauspielhaus Group Practice

2 weeks after ClosureFast

Endovenous procedures that can be used without heat and local anaesthesia have also become more common in recent times. The VenaSeal® procedure (adhesive technique) involves closing the vein and switching it off using cyanoacrylate glue.

Venaseal System - Medizin im Schauspielhaus Group Practice

Images and videos courtesy of Medtronic

Video of VenaSeal® procedure

Advantages of the new, minimally invasive procedures

  • No incisions, no scars, hardly any blood loss
  • Little time off work needed
  • No general or spinal anaesthesia
  • No spell in hospital

Scientific studies show that the results are at least as good as those of conventional surgery.


  • Stripping operation:
    A conventional operation can be useful in some cases. This includes crossectomy (ligation of the saphenous veins where they join the deep vein), stripping (stripping the saphenous veins), and phlebectomy (removing the side branches using the 'hook method'). It is performed under general anaesthesia as a partly inpatient or inpatient procedure by PD Dr. Dr. Christian Schmidt at Klinik Hirslanden, Zurich. This option is also available to patients with general insurance.
  • Phlebectomy (hook method):
    This involves removing diseased side branches via small skin incisions (approx. 2 mm) under local anaesthetic, often in combination with other methods mentioned. This treatment can be performed on an outpatient basis at our practice. 


Our phlebological treatment is based on a holistic concept. Diagnosis, treatment and follow-up care are fully tailored to your individual requirements. There are advantages and disadvantages to each of the aforementioned procedures, and each patient has their own needs. Thanks to our extensive experience with all procedures, we are able to offer you the best treatment for your own specific condition. 

Dr. Christian Schmidt as a surgeon, vascular surgeon and venous specialist (phlebologist), Christian Schmidt is a proven expert in the field of varicose vein diagnostics and therapy. Since January 2018 he works in the joint practice MediS and carries out all therapies here. He is a lecturer at the University of Zurich.