The present invention is a device to assist in the insertion of a catheter tube into the urethral tract of women The device simplifies the finding of the location of the external urethral orifice and widens the orifice so that women patients may perform self-insertions of a catheter into the external orifice of the urethral tract for medical treatments without the assistance of a physician or a caregiver and with substantialy reduced discomfort. The device is constructed of : a vaginal insertion portion, a catheter tube guiding portion, at least two wing structures configured to widen the urethra orifice and a vaginal insertion element. Both the vaginal insertion portion and the catheter tube guiding portion of the UCAD are constructed as plates having elongated configurations. The vaginal insertion portion and the catheter tube guiding portion connect at one of their edges in a spatial configuration that forms an L shaped structure. The vaginal insertion portion of the UCAD has a configuration designed to be placed in the vagina, adjacent to the pubic symphysis of a treated women patient. The catheter tube guiding portion has a hole at the unconnected edge. Through the hole the catheter tube is inserted into the urethral tract of a treated patient. The catheter tube is removable from the hole in the catheter tube guiding portion without having to remove the catheter tube from the orifice of urethral tract, as explained below. The vaginal insertion element is connected to the vaginal insertion portion. The wing structures connect to the catheter tube guiding portion and protrude from the rim of said hole in the catheter tube guiding portion.