| 摘要 |
<p>An active, as opposed to a passive, sphincteric system (1) to be implanted within or near the periurethral tissues (52) of an incontinent patient. The system includes a genitourinary prosthesis comprising an inflatable (and deflatable) balloon (1) (rather than a cuff) which is percutaneously infused with and inflated by a supply of hydraulic fluid or suspended particulate matter to increase both the localized tissue density proximal to the urethra (53) and the passive occlusive pressure applied to the urethra for returning the patient to continence. The system includes an accumulator or reservoir (20) and a check valve (16) located between the accumulator and the balloon to control the flow of fluid or suspended particles therebetween and the corresponding inflation or deflation of the balloon. Positioning and inflating instrumentation (e.g. 4, 50, 54) is also disclosed by which to implant the sphincteric system according to a ralatively simple insertion process.</p> |
