MULTILINETM apparatus is equipped with two lasers to remove soft tissues.
Pulse contact scalpel Nd:YAP long pulse (1079 and 1340 nm)
Erbium laser Er:YAG
The choice of these very lasers is attributed to the particular properties of their emission. As the wavelength of the Er:YAG laser strikes the peak of the spectrum of water absorption, it is possible to make ablation of soft tissues using it without thermal effect to the surrounding tissues. Depending on its energy one pulse can evaporate from 10 up to 300 micron of tissue at the spot size from 1 to 6 mm. Owing to that this laser is an indispensable instrument for laser skin resurfacing – a layer-by-layer tissue ablation from a large surface (for instance, a face). The absence of coagulation allows to control precisely the quantity of ablated tissue.
The Er:YAG laser has a natural threshold – as soon as the emission reaches the papillary layer of the skin, it gets immediately absorbed by blood (that has water as the main component) and doesn’t penetrate deeper. The epidermis is completely removed to all its depth following all the contours of the skin. The scarring while using this kind of laser is absolutely ruled out as the laser radiation does not penetrate into deeper layers of the dermis.
Due to its efficiency and safety the Erbium laser has been considered for a long time to be a “gold standard” of cosmetology. The Erbium laser has more advantages than lasers with high degree of coagulation (for instance, CO2 laser) - while using them the quantity of ablated tissue is impossible to control visually that results in coagulation of the dermis and scarring. The complete downtime makes only 5-7 days that is 2 or 3 times less than while using CO2 lasers.
The high pulse energy (up to 2 J) and pulse frequency up to 15 pulses per second make the MULTILINETM Er:YAG laser one of the most powerful and efficient lasers in the market.
To excise soft tissues we use Nd:Yap long pulse as contact laser scalpels, the emission of which is less absorbed by soft tissues that ensures their coagulative properties.
In case when a small degree of coagulation is needed, we use a laser scalpel with 1340 nm wavelength, but if its coagulative property is not sufficient, in case of profuse bleeding, for instance, we use a laser scalpel with 1079 nm wavelength.
High average emission power (up to 60 W) in combination with minimal optical fiber diameter (300 micron) ensures high cutting properties that allow using MULTILINETM laser scalpels in different spheres of surgery.
Due to the fact that the heating of the tissue is made mainly light guide-direction and the heat disperses insignificantly sideways, the area of thermal necrosis is minimal. That makes the healing process quicker and doesn’t result in extensive postoperative scarring.
These lasers – the Er:YAG and the Nd:YAP/long pulse are also applied to remove different benign growths – papillomas, warts, capillary nevi etc.
Fig. 1. Exposure of soft tissue to the laser emission.
Fig. 2. Ablation and coagulation of soft tissues.
Results of treatment: