New 2,000 W, 1,060 nm Diode Laser with a Spot Size of 4x3 mm for Vascular Lesion Treatments

Background: Diode laser technology with a similar wavelength to 1,064 nm Nd:YAG solid-state lasers has been used to treat vascular lesions. This wavelength range is believed to provide the best compromise between efficacy and safety for different skin types. Diode laser technology has several advantages over solid-state lasers, such as its lower cost; smaller size; superior durability; the absence of optics, pumping lamps and crystals; minimal maintenance requirements; and its quick and easy installation. However, the main limitation is that diodes on the market cannot reach high fluences with short pulse durations. Objective: To present a high-power (2,000 W) 1,060 nm diode laser with a spot size of 4x3 mm, which allows for the same specifications as Nd:YAG lasers, to provide effective, comfortable and safe treatments for a wide range of facial and corporal vascular lesions such as telangiectasias, red and blue veins, cherry angiomas, fine reticular veins, venulectasias, spider veins and erythrosis. Materials and methods: 17 subjects with vascular lesions of grade C0 to C1 and skin types II to V according to the Fitzpatrick scale, involving a total of 78 treatment areas and 248 procedures, were treated in a prospective study on clinical efficacy and safety using the Primelase device (Cocoon Medical, Spain). The laser parameters included: static mode with fluences between 100 and 225 J/cm2 , pulse widths between 9 and 50 ms and a frequency of 1 Hz; as well as dynamic mode with fluences between 15 and 45 J/cm2 , pulse widths between 3 and 4 ms and a frequency of 10 Hz. The number of sessions and the parameters were defined according to the lesion and its progress during the treatment. Results: The sessions were found to be quick, with a mean time of 2 minutes per area. The treatments were comfortable with a moderate pain sensation valued at 4.95 out of 10 (SD 2.45, p < 0.01). The endpoint reaction in the lesion was mild to moderate with a rating of 1.73 out of 3 (SD 0.66, p < 0.01). The overall results were rated as very good to excellent (51-100% reduction) with a mean rating of 3.48 out of 4 (SD 0.73, p < 0.01) on the GAIS scale. Patient satisfaction was good and excellent with a rating of 2.56 out of 3 (SD 0.68, p < 0.01). Conclusions: The new 4x3 mm 1,060 nm 2,000 W diode laser has demonstrated very good results for the elimination of a wide range of vascular lesions in facial and corporal areas, offering a comfortable, safe and fast treatment for subjects with grade C0 to C1 vascular lesions and skin types II to