Second variant is radio frequency coagulation.

As in vein entering a right catheter ,as working by a principle an electer iron, just computerize  in his having a working part as on 7 cm in length,which heating till 120C and for alternative ant are using and low temperatures nd in vein entering catheter  and his working part is faster cooling till minus 60 C, as a vein space as freezing, and ache vein in a compression condition is sticking.

And still a new and interest method as getting a name a micro foam sclerotic rapt.As in vein space entering a chemical remedy which is entering in effecting with a blood components.And in result in vein space forming a biological glue,and after when a outsold  sticking to the shoe,walls of veins are sticking as very tighter, and not removing as on any method ago as a glue kind using a vital tissue,as she is under effecting a different processes in organism as sucking out and disappearing.

And third method which is close entering in practise is entering in vein space a biological glue, but technology is a not new,this biological glue long time using in medicine , as with his are sticking skin cuts, and heart valves.But today is displayed a glue modification ,with a special gadget ,like a montage gun for the foam, entering in vein space and earls,tightensher, as later he is slowly replaceing a normal sub cutaneous cellulose. And displayed a group of combined technologies ,as a calling a mechanochemical obliteration,when combining are two effecting components.As in vein space entering are a faster turning spiral ,which destroying a inside wall in a changing vein.

As you know, before a stick any surface her need to clean, and this is turning spiral and cleaning a vein top and with this entering a second component as taking part in a role a glue.