Technologies are generally provided for a trans-urethral sling delivery device for deploying a sub-urethral sling to support a urethra to treat urinary incontinence. The delivery device may include a conical-shaped cap attached to a distal end of the sling, the cap configured to puncture the urethra to provide access to an area surrounding the urethra. The sling may be wrapped in a reduced profile around a delivery tool having flexible spreading members extending away from each other at an end of the delivery tool. The spreading members may be inserted within the cap, and the device may be inserted through the urethra to deploy the sling. The delivery tool may be gradually removed from urethra, removing the spreading members from the cap, such that the spreading members may expand to spread the sling to a flattened configuration as the spreading members are moved along a length of the sling.
