Resumo

Objectives: Laser technology has been used to improve the quality of skin for more than 35 years however, selective thermolysis was a dominating approach in the field; one wavelength for one absorptive target. Sequential laser radiation, different wavelength laser applications, have been used over the last 15 years but without great acceptance by the medical and aesthetic communities. Introduction: The authors shall present a new laser that can be defined as an advanced system in the medical and aesthetic technology markets. The authors shall present the use of an innovative laser with two wavelengths that can also be used independently and simultaneously at any possible ratio of 1550 and 1927 nanometers, which differs from equipment already on the market. The laser system has high energy pulses similar to the existing large-size lasers but is reduced to pocket size (198x70x52 mm) weighing 330g, and operated from a rechargeable battery connected to the device via cable Materials / method: Evaluation of dimensions of photo-thermolysis zones (collagen transformation) of human front abdomen skin after a non-ablative fractional laser radiation: MultiFrax simultaneous radiation of two beams at 1550nm and 1927nm and MultiFrax consequent radiation at the same at 1550nm and 1927nm at the similar pulse energy. Front low part abdominal soft, normal color, elastic skin was chosen for the study following by resection. Symmetric left and right areas were chosen for the comparative laser irradiation. Areas were divided to nine of 3-4 cm squares. Results: The cumulative tissue effect of simultaneous beams of different wavelength laser radiation to the skin demonstrated a higher and broader energy deposition under the surface of the skin. Collagen transformation at the depth of the skin zone (the “stem”) is due to the increased energy penetration of 1550 nm wavelengths. Due to the cumulative effect, a deeper energy penetration of 1550nm wavelength radiation a collagen transformation was observed at the simultaneous irradiation compared with sequential irradiation of the skin at similar fluences of laser pulses. Conclusion: Authors recommend the use of this novel multibeam simultaneous laser technology in dermatology, plastic surgery and aesthetic medicine to treat various lesions such as postsurgical and burn hypertrophic scars, acne scars, melasma, age spots, rhytids, stretch marks, poikiloderma.