We report the retrospective experience in the treatment of six patients with recurrent or severe stress urinary incontinence or low urethral pressure. They were treated with sling modified procedure with polytetrafluoroethylene (Gore-Tex); in the National Institute of Perinatology (INPer) at 1992-1994. The morbidity was highest, the patients in the post operatory present detrusor instability, voiding problems and tissue reaction to polytetrafluoroethylene. The patients are continent in the actuality. They were observed by 8-32 months. This surgery is easy to make and not required of more experience than the necessary for realizing the cysto-urethropexy with needle, but, the selections criteria must be carefully analyzed.