A sling for stress urinary incontinence (SUI) may be placed and stabilized using a midurethral sling stabilizer. First, a sling may be placed beneath the urethra in a position to support the urethra, without tension. The midurethral sling stabilizer may then be inserted in a manner where the distal end partially encompasses and stabilizes the sling through a partial aperture and stabilizes the sling in a desired position, without tension. Once the sling is stabilized in the desired position, the sheath may be removed from the sling.