Treatment of Chronic Lower Extremity Ulcers with A New Er:Yag Laser Technology

Abstract

Chronic lower extremity ulcers (CLEUs) have a high prevalence and are difficult to treat due to their various aetiologies. The aim of this study is to evaluate the results achieved in treating CLEUs using an Erbium: YAG (Er:YAG) laser with RecoSMA technology. This laser emits thousands of microbeams of energy causing superficial epidermal ablation and a separation of dermal fibres due to a mechanical-acoustic and resonance effect. The evaluation of the results achieved was carried out by questionnaires completed by 18 patients enrolled in the study. Histological studies and photographs taken before each session (16 sessions in total) were analysed to visually monitor the clinical progress. The analyses were carried out with the help of computer software. The results after 16 treatment sessions showed the complete healing of ulcers or a decrease in their initial area of at least 55% in over 65% of the patients treated. The Student's t-test and Fisher's exact test were used for statistical analysis. The Er:YAG laser and RecoSMA technology ablates few epidermal cell layers, producing a mechanical-acoustic effect with resonance action leading to tissue regeneration mechanisms. This technology offers an effective and safe alternative for treating CLEUs.

Early laser treatment of local complications after surgical blepharoplasty

“…Поглощение такого излучения вызывает появление очагов поверхностной микроабляции и мощные акустические резонансные волны, распространяющиеся в глубокие слои кожи. Локальное увеличение мощности акустических волн за счет их интерференции оказывает микротравмирующее действие на мембраны и коллагеновые волокна, стимулируя репаративные процессы и ремоделирование рубцовой ткани [16][17][18][19][20]. В зависимости от длительности импульса глубина реализации эффекта может быть от 3 до 6 мм (доступны поверхностный и глубокий режимы), что позволяет оказывать воздействие на уровне кожи и подкожных тканей в зависимости от глубины локализации патологического очага.…”

Treatment of psoriatic skin lesions with a new Er:Yag laser technology: A case series study

“…It is performed using an Er: YAG laser (2,940 nm) and a special treatment head SMA. In essence this method takes advantage of the radiation of an erbium laser with a wavelength of 2,940 nm, which is well absorbed by water and is space modulated in such a way that an energy flux is applied to the treated surface with an ordered alternation between the maxima and minima the density of the energy (Alcolea et al, 2017;Hersant, SidAhmed-Mezi, Chossat, & Meningaud, 2017;Trelles & Khomchenko, 2019;Trelles, Khomchenko, Alcolea, & Martinez-Carpio, 2016;Volkova, Glazkova, Khomchenko, & Sadick, 2017;Volkova, Valamina, Shvidun, Rebrieva, & Sadick, 2019). The energy emitted in pulses, when interacting with the tissue modulates spatially which means that the energy affects not only the skin's surface, but also penetrates toward the inside of the dermis.…”

Clinical benefit of using a multifractional Er:YAG laser combined with a spatially modulated ablative (SMA) module for the treatment of striae distensae: A prospective pilot study in 20 patients

“…The superficial absorption of the laser energy by the tissue, as well as the transmission of powerful acoustic waves, cause micro‐traumas resulting in very superficial microablation of the epidermis. This is sufficient to remove several layers of epidermal cells without exceeding the thickness of this cutaneous layer, and without generating fibrous tissue, due to the absence of thermal damage .…”