Histological Evaluation of BTL-899 Device´s Effect on Fat Tissue

Inclusion Criteria: * Age \> 21 years * Voluntarily signed an informed consent form * BMI ≤ 35 kg/m2 * Women of child-bearing potential are required to use birth control measures during the whole duration of the study. * Willingness to abstain from partaking in any treatments other than the study procedure * Willingness to comply with study instructions, to return to the clinic for the required visits and to undergo punch biopsies in the abdominal area. Exclusion Criteria: * Electronic implants (such as cardiac pacemakers, defibrillators, and neurostimulators) * Metal implants in the treated area * Drug pumps * Malignant tumor * Pulmonary insufficiency * Injured or otherwise impaired muscles in the treated area * Cardiovascular diseases * Disturbance of temperature or pain perception * Hemorrhagic conditions * Septic conditions and empyema * Acute inflammations in the treated area * Systemic or local infection such as osteomyelitis and tuberculosis * Contagious skin disease * Elevated body temperature * Application during pregnancy, postpartum period, nursing, and menstruation * Graves' disease * Skin related autoimmune diseases that may contradict the biopsy * Poor healing and unhealed wounds in the treatment area * Any disease or condition contradicting the skin tissue biopsy * Any disease or condition that may compromise the histologic observation at the pathologist discretion