Preliminary results of AS 791/792 artificial sphincter for urinary incontinence.

Twenty-seven patients with incontinence have been treated by implantation of the AS 791 or 792 artificial sphincter over the past 24 months. All but four were incontinent as a result of myelodysplasia or prostatic ablation: 22 are currently completely continent, 2 await activation and 3 have failed. There has been only one mechanical failure, though 3 patients have required the insertion of a higher pressure reservoir to resolve stress incontinence, reflecting our conservative approach to the initial choice of reservoir.