Abstract: An apparatus for diagnosing and treating stress urinary incontinence includes a belt surrounding the patient's trunk, a support plate on the belt, parallel tubes on the plate, and a generally U-shaped, downwardly opening pressure member having bent portions at the ends of the legs with enlarged tips. The bent portions enter the vagina and apply pressure against the anterior wall thereof to modify the urethrovesical angle, relieving the condition. The pressure member is wire coated with a physiologically inert polymer.