The invention relates to medicine and can be used in surgery, including cosmetic surgery, for example, for treating trophic and slowly healing ulcers, bed sores, burns, scars, etc., as well as for biological tissue rejuvenation, including skin, in different locations. The proposed method is for the regeneration of biological tissues with restoration of functional properties, characteristics and structure thereof, in which tissues are subjected to a predetermined degree of mechanically-induced trauma through the creation, in the desired areas, of at least one region of interference between acoustic waves generated by at least two sources and propagating in the tissues to be regenerated, with the possibility of subsequent natural regeneration of the corresponding biological tissues in said areas. Also proposed are various embodiments of the device for the implementation of the above method. To achieve the rejuvenation effect of different biological tissues located at different depths, the microtrauma areas are created with no thermal effect, i.e. neither evaporation nor coagulation of all overlying tissues, i.e. regeneration of the tissues occurs with no fibrous cell growth, suggesting that not only visual but also actual rejuvenation took place.
