F care systems developed special needles for the Thermocoagulation treatment with the TC 3000 and Varigone for spider veins, couperose and red dots. These needles carry the name R3i and R6i. The R3i needle has a diameter of 0.08mm and the R6i needle has a diameter of 0.15mm.

The technical differences between the traditional needle and the R3i / R6i needle:

• The R3i and R6i needle's tip is sharper than the tip of the traditional needle.
• The R3i and R6i have a better insulation which sticks better to the needle shaft allowing a complete insulation against temperature from radio frequency.

The advantages for the patient:

• The R3i and R6i needles are less painful for the patient. Because of the sharper tip they penetrate easier through the patient's skin.
• The R3i and the R6i needles have a better insulation, whereby the temperature generated by the radiofrequency doesn't harm the skin, but only invokes a temperature increase at the tip, thus in the vein, as it should be.