Prospective and Comparative Evaluation of a Medical Device Composed of a Perineal Probe Connected to a Mobile Application in the Management of Stress Urinary Incontinence.

Inclusion Criteria: * Patients with moderate, severe or very severe stress urinary incontinence or mixed stress urinary incontinence (according to ICIQ-UI SF questionnaire score: moderate (6-12), severe (13-18) and very severe (19-21)) * Patient aged between 18 and 60 * Patient with a quality of life score measured with the I-QoL questionnaire less than or equal to 70 (score measured from 0 to 100, with poor quality of life: 0-35; average quality of life: 36-70; good quality of life: 71-100) * Not to have given birth in the last 6 months (to avoid post-partum physiological recovery) * Signed informed consent * Effective contraception throughout the study (declarative) * Patient must have a smartphone running at least Android 7 and iOS 12 * Patient must be able to read and write French Exclusion Criteria: * Patients with mild stress urinary incontinence or mixed stress urinary incontinence (ICIQ-UI SF score: mild (1-5)) * Patient with a quality of life score above 70 (according to the I-QoL questionnaire: good quality of life: 71-100) * Patient undergoing other pelvic-perineal rehabilitation during the study period * Patients with neurological disease or congenital malformation, surgically or medically treated urinary incontinence or prolapse, perineal hypoesthesia or local conditions prohibiting the use of an intravaginal catheter * Infection of the bladder or vagina, or any symptoms associated with infection (itching, pain on urination or fever) * Contraindications to the use of the medical device * Anatomy making catheter placement difficult or impossible; in the case of prolapse, specialist advice is recommended. * Hemorrhage * Patients with genitourinary cancer (within the last 5 years) * Patients with extra-urethral "incontinence" (fistula, ectopic ureter) * Patients with severe urinary retention * Patient with vesico-ureteral reflux * Patients with hypoactive bladder * In case of peripheral denervation in the pelvic-perineal area, specialist advice is recommended * Patients wearing a sacral neuromodulation device * Patients in an exclusion period (determined by a previous or current study) * Impossibility of giving the subject clear information (subject in an emergency situation, difficulties in understanding the subject, etc.) * Patient under court protection * Patient under guardianship or curatorship * Pregnancy (positive pregnancy test) * Breastfeeding (as the hormonal impregnation caused by breastfeeding has a negative impact on perineal tone) * Use of Huawei and Oppo smartphones