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Implantable prostheses designed for functional replacement of the male urethral sphincter. These prostheses are typically hydraulic devices including an intra-abdominal fluid-filled reservior, an inflatable and deflatable cuff that surrounds the urethra, and a mechanism that includes a small pump situated beneath the scrotal skin. Urethral sphincter prostheses are used to help control moderate to severe incontinence, often after prostate surgery.
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