Abstract: A method and device for improved minimally invasive vascular treatments. The method comprises introducing a catheter into a vein to be treated. The catheter is adapted to introduce an energy transmitting member and a fluid into the vein to be treated. The fluid introduced via the catheter can include, but is not limited to: saline solutions, cooled saline solutions, liquids for vapor generation, vasoconstricting agents, anesthetic agents and/or a formulation containing an ingredient which can be activated by the applied energy.

Abstract: A method and device are disclosed for improved minimally invasive vascular treatments. The procedure comprises introducing a mono-channel or multichannel catheter into a vein to be treated, under local anesthesia, where the multichannels can be essentially concentric. This special catheter receives an energy transmitting elongate member in a channel and a fluid in another channel, or in the case of a mono-channel fluid flows around the member. Fluids that can be used, but not limited to, are saline solutions, cooled saline solutions, liquids for vapor generation, vasoconstricting agents, anesthetic agents and/or a formulation containing an ingredient which can be activated by the applied energy. Anesthesia, where used, is introduced into the inside of the vein, thus eliminating the need of external or tumescent anesthesia. In addition, the previously mentioned substances can also be combined according to the treatment requirements for different purposes and effects.

Abstract: A method is disclosed for improved minimally invasive vascular treatment. The procedure consists in performing a femoral nerve block, in order to achieve a sensorial block but not a motor block in the lower extremity. A femoral nerve block carries low risk of complications and when combined with block of the sciatic nerve provides anesthesia of almost the entire lower extremity. In a preferred embodiment, 20 ml of about 0.1% to about 0.5% lidocaine are injected under echographic/ultrasound control. After the anesthesia takes effect, a needle or other means is inserted through the skin into the vein to be treated and an optical fiber is introduced inside it. In a preferred embodiment, optical fiber is a radial emitting fiber and wavelength used is 1470 nm. Laser radiation is emitted while withdrawing the optical fiber, choosing appropriate irradiation parameters for each case.