The aim of this work is to improve the results of surgical treatment of patients with stress urinary incontinence by applying a sterile bioplastic collagenous material with fully preserved fibrous structure. The materials and methods of research. On the clinical base of the Department of obstetrics and gynecology №2 BSMU in the period from 2011 to 2013 were operated on 30 women about stress urinary incontinence, the first group consisted of 21 (70%) women of reproductive age, second – 9 (30%) women in premenopausal period. The diagnosis was established on the basis of filling the bladder diary, evaluation of the pelvic floor muscles according to the classification of POP-Q (Pelvic Organ Prolapse Quantification), uroflowmetry and transvaginal ultrasound. 

Results. After surgical treatment indicators of uroflowmetry approaching normal. The maximum volumetric flow rate of urine in patients was higher than normal, and the urine is reduced, which is a characteristic feature for this category of patients. After surgery, there was a decline in the maximum volumetric flow rate of urine and the rise time of urination, that allows to judge about the effectiveness of the correction. The basis for voiding lies sphincter deficiency, which is visualized by ultrasound as a shortening of the urethra and enlargement of the proximal urethra in the form of a "funnel". After surgical correction, we celebrated the lengthening of the urethra, which consequently led to the closure of the proximal urethra. 

Conclusion. Treatment of women with stress urinary incontinence based on individual selection of material for surgical correction with respect to the age. The use of sterile bioplastic collagen membrane may be the method of choice sling operations.