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      Esfínter Urinario Artificial "FlowSecureTM": Un nuevo concepto de esfínter artificial regulable y con oclusión condicional para la incontinencia urinaria de esfuerzo Translated title: FlowsecureTM" artificial urinary sphincter: a new adjustable artificial urinary sphincter concept with conditional occlusion for stress urinary incontinence

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          Abstract

          Introducción: Difundir el concepto de un nuevo esfínter urinario artificial con oclusión condicional para el tratamiento de la incontinencia urinaria de esfuerzo. El prototipo fue concebido y diseñado por los profesores Craggs M. y Mundy A.R. en el Instituto de Urología y Nefrología de Londres. Materiales y Métodos: El esfínter FlowSecure es un prototipo de una sola pieza de silicona llena de suero salino que consta de: 1) Un reservorio regulador de presión, 2) un reservorio de asistencia al estrés, 3) una bomba de control con un puerto autosellable y 4) un manguito. El reservorio regulador determina la presión de la prótesis y se puede ajustar desde 0 a 80 cm H2O mediante la inyección o extracción de líquido a través del puerto autosellable (oclusión basal). El reservorio de asistencia al estrés transmite de forma reversible los aumentos de la presión intra-abdominal durante los periodos de esfuerzo (oclusión condicional). Resultados: La técnica quirúrgica de implantación es simple, reduciendo la posibilidad de infección y errores de ensamblaje. La asociación en serie de un reservorio regulador de presión con un reservorio de asistencia al estrés permite establecer presiones de oclusión basal bajas y el aumento condicional de la misma durante los periodos de estrés, reduciendo el riesgo de atrofia y erosión. Tras la implantación, la presión es ajustable dependiendo de las necesidades clínicas del paciente. Discusión: El esfínter FlowSecure está diseñado para corregir la incontinencia ajustando la presión de oclusión según las necesidades individuales de cada paciente, así como para reducir las complicaciones asociadas al exceso de presión de oclusión y los fallos mecánicos.

          Translated abstract

          Introduction: To spread de concept of a new artificial urinary sphincter with conditional occlusion for stress incontinence. The new prototype was conceived and designed in The Institute of Urology and Nephrology of London by Professor Craggs M. and Professor Mundy A.R. Methods: The FlowSecure sphincter consists of an adjustable pressure-regulating balloon, a stress relief reservoir, a control pump and valve assembly unit with self-sealing port and a urethral cuff. The pressure regulating balloon determinates de operating pressure of the device; the pressure is adjustable in the range 0-80 cm H2O and can be altered by injection or removal of normal saline through the self sealing port. The stress relief balloon transmits transient intrabdominal pressure to the cuff during periods of stress. An adjustable circular urethral cuff minimises creasing and possible stress fractures. Results: The device is implanted as a one-piece assembly which is pre-filled with sterile saline. The surgical technique is simple and associated with little handling, reducing risk of infection and potential assembly errors. The adjustable pressure regulating balloon in association with the stress relief reservoir enables the cuff occluding pressure to be set at a low range, therefore reducing the risk for atrophy and erosion. Discussion: The new FlowSecure urinary artificial sphincter with conditional occlusion is designed to provide good continence rates adjusting regulating pressures when needed and conceived to reduce the risk of potential complications associated with excessive occluding pressures and mechanical failures.

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          Most cited references21

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          Treatment of urinary incontinence by implantable prosthetic sphincter.

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            A review of the complications and results of implantation of the AMS artificial urinary sphincter.

            The history and evolution of devices designed to achieve urinary continence are reviewed. Passive and active (including volume and pressure regulated) devices are described in detail. Meta-analysis of the published studies revealed that continence improved in 88% of patients and total continence was achieved in 73%. Global revision rate was 32%. Urethral erosion occurred in approximately 12%, infection in 4.5% and mechanical complications in 14% of cases. The complications relating to the AMS artificial urinary sphincter are analyzed. The majority of patients (> 85%) required only one revision. 22% of complications were due to mechanical malfunction. Infection comprised 12.9% of complications. The patterns of total revisions followed a double exponential decay curve: 50% of revisions were performed within 8 months and 90% within 3 years of implantation. Complications were still reported several years postimplantation. This review analyzes the problems relating to the application of pressure and the presence of foreign material around the urethra and exemplifies the requirement for long-term specialist follow-up of these patients.
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              A preliminary report on a new hydraulic sphincter for controlling urinary incontinence

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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                aue
                Actas Urológicas Españolas
                Actas Urol Esp
                Asociación Española de Urología (, , Spain )
                0210-4806
                August 2007
                : 31
                : 7
                : 752-758
                Affiliations
                [01] London orgnameUniversity College of London orgdiv1Institue of Urology and Nephrology
                [02] Palma de Mallorca orgnameHospital Universitario Son Dureta
                Article
                S0210-48062007000700009
                10.4321/s0210-48062007000700009
                68d36a05-d8e0-410b-8071-9a1272669659

                This work is licensed under a Creative Commons Attribution-NonCommercial 3.0 International License.

                History
                : December 2006
                : February 2007
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 12, Pages: 7
                Product

                SciELO Spain


                Esfínter urinario artificial,Oclusión condicional,Artificial urinary sphincter,Conditional occlusion

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