Tumescent Anaesthesia: What's it all about?

With the ClariVein® dual action, non-thermal catheter for the removal of varicose veins there is no need for any tumescent anaesthesia…So what is tumescent anaesthesia and why is it such a big deal?


One of the main advantages of ClariVein® is the ability to work tumescentless. Tumescent anaesthesia is diluted lidocaine, more often than not the application of tumescent anaesthesia is the most difficult part of a heat-based intravenous procedure (Laser and Radiofrequency). It is one of the most difficult and challenging parts of the intravenous procedure for the clinician to learn and to execute properly. During the application of the tumescent, the clinician must surround the vein with tumescent anaesthesia. This is done by injecting the anaesthetic at multiple points along the vein. In order to apply the anaesthesia the patient must be given many painful and uncomfortable injections, as the physician must inject the tumescent in the fascia surrounding the vein wall. This is very uncomfortable for the patient, and is often referred to as the worst part of the entire procedure. Approximately 10 ml of tumescent anaesthesia per centimetre of vein should be used. This means, for a 37 cm vein (great saphenous vein - groin to knee) 370 ml of tumescent anaesthesia will be used. Tumescent anaesthesia has the following two effects;

  1. It protects the patient from the high Temperatures of the laser tip (1000°C) and radiofrequency tip (200°C). Without it or if it is misapplied, the patient will sustain severe bruising and burns.
  2. Tumescent acts to shrink the vein around the tip of the thermal device. This allows for a successful procedure.

With ClariVein®, no tumescent anaesthesia is used. This eliminates a major source of procedure error, discomfort and time. ClariVein® saves 15 to 20 minutes of procedure time.

multi cultural legs

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*Tumescent anaesthesia is the infiltration of large amounts of dilute lidocaine (0.05–0.1%) and epinephrine (1:1,000,000). Maximum dose of tumescent lidocaine with epinephrine is up to 45 mg per kilogram at a concentration between .05% and .1%. Whereas the