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Eur Urol. 2006 Sep;50(3):574-80. Epub 2006 May 2.

A new artificial urinary sphincter with conditional occlusion for stress urinary incontinence: preliminary clinical results.

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  • 1Institute of Urology, Royal Free & University College Medical School, London, UK.



To perform a preliminary clinical investigation to determine the safety and efficacy of a novel artificial urinary sphincter (AUS) with conditional occlusion for the treatment of stress urinary incontinence.


Male patients with urodynamically proven stress urinary incontinence after a prostatectomy were implanted with the novel AUS. They were followed up over a period of 12 months and the device tested for efficacy by using objective measurements of urinary leakage and continence. We derived a new measure for continence called the Continence Index.


We have demonstrated that the patients receiving the new AUS showed a reduction of greater than 10-fold in mean daily leakage volume from 770.6 ml to 55.1 ml. There was an overall improvement in the Continence Index from 54% to 97%.


The new AUS with conditional occlusion provides good continence rates and enables adjustment of regulating pressure in situ.

[PubMed - indexed for MEDLINE]
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