This is the prospective randomized parallel groups trial with two participating centers (Department of Urology, Saint Petersburg State University Clinic of advanced medical technologies n.a. N.I.Pirogov, Saint Petersburg, Russia; Department of Urology, Regional Hospital №3, Chelyabinsk, Russia) designed to assess the efficacy and safety of tunable-tension transobturator tape and its ability to reduce the rate of postoperative voiding dysfunction comparing to standard transobturator midurethral sling.
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Inclusion Criteria: * The subject is a woman with stress urinary incontinence or urodynamic mixed urinary incontinence with predominate SUI * The subject is at least 18 years of age * The subject has failed conservative treatment for at least 6 months * The subject gave written consent to participate in the study, Exclusion Criteria: * The subject has an active urinary tract infection or skin infection in the region of surgery * The subject has pelvic organ prolapse (POP) stage 2 or higher according to Pelvic Organ Prolapse Quantification system (POP-Q) * The subject had prior surgery for SUI or POP * The subject has predominate urge urinary incontinence * The subject has a urogenital fistula, anatomical defect, stricture, diverticulum, new growth or any kind of abnormalities of the urethra * The subject has chronic pelvic pain * The subject has a system neurological disease, such as Parkinson's disease, Alzheimer disease and other dementias, multiple sclerosis, epilepsy etc * The subject has pelvic cancer or the subject has undergone radiotherapy for treating pelvic cancer * The subject has post void residual (PVR) \>50 ml * The subject has dysfunctional voiding and average flow rate (Qave) \< 12 ml/s * The subject is pregnant or disagrees to abstain from the pregnancy during the study * The subject has any mental disorders affecting his ability to evaluate the risks of the treatment and make an independent decision on participation in the study * The subject has an allergy on local anesthetics