{"id":12845,"date":"2025-08-07T10:55:10","date_gmt":"2025-08-07T14:55:10","guid":{"rendered":"https:\/\/www.rigicon.com\/glossary-term\/lock-out-valve\/"},"modified":"2025-08-07T10:55:10","modified_gmt":"2025-08-07T14:55:10","slug":"valvula-de-bloqueio","status":"publish","type":"glossary-term","link":"https:\/\/www.rigicon.com\/pt-br\/glossary-term\/valvula-de-bloqueio\/","title":{"rendered":"V\u00e1lvula de Bloqueio"},"content":{"rendered":"","protected":false},"excerpt":{"rendered":"","protected":false},"featured_media":0,"template":"","glossary-category":[117],"glossary-product":[104,105],"class_list":["post-12845","glossary-term","type-glossary-term","status-publish","hentry","glossary-category-prosthetic-implants","glossary-product-infla10-pulse-ipp-series","glossary-product-rigi10-malleable-penile-prosthesis"],"acf":{"gt-definition":"<p>Uma v\u00e1lvula de bloqueio \u00e9 um mecanismo especializado incorporado em reservat\u00f3rios de pr\u00f3teses penianas projetado para evitar a autoinfla\u00e7\u00e3o, que \u00e9 a transfer\u00eancia n\u00e3o intencional de fluido do reservat\u00f3rio para os cilindros, resultando na infla\u00e7\u00e3o indesejada do cilindro.<span class=\"superscript\">1<\/span> A v\u00e1lvula funciona criando uma barreira mec\u00e2nica que impede a migra\u00e7\u00e3o de fluido sob press\u00f5es fisiol\u00f3gicas normais, ao mesmo tempo que permite a infla\u00e7\u00e3o intencional quando a bomba \u00e9 ativada.<span class=\"superscript\">2<\/span> Esta inova\u00e7\u00e3o reduz significativamente a ocorr\u00eancia de autoinfla\u00e7\u00e3o, uma complica\u00e7\u00e3o problem\u00e1tica que pode ser potencializada por cicatrizes pr\u00e9-vesicais ap\u00f3s prostatectomia radical ou outras cirurgias p\u00e9lvicas.<span class=\"superscript\">3<\/span><\/p>\n<p>A v\u00e1lvula de bloqueio \u00e9 um mecanismo incorporado \u00e0 bomba da pr\u00f3tese peniana infl\u00e1vel que impede a transfer\u00eancia espont\u00e2nea de fluido do reservat\u00f3rio para os cilindros, prevenindo a autoinfla\u00e7\u00e3o. Quando ativada, a v\u00e1lvula mant\u00e9m os cilindros desinflados impedindo a migra\u00e7\u00e3o de fluido por gradiente de press\u00e3o, especialmente quando o reservat\u00f3rio est\u00e1 em posi\u00e7\u00e3o retrop\u00fabica e sujeito a press\u00e3o abdominal.<\/p>","gt-synonyms":"Reservat\u00f3rio da v\u00e1lvula de bloqueio, V\u00e1lvula de bloqueio do reservat\u00f3rio, V\u00e1lvula anti-autoinfla\u00e7\u00e3o, V\u00e1lvula de preven\u00e7\u00e3o de autoinfla\u00e7\u00e3o","gt-citation":"[1] Wilson SK, Henry GD, Delk JR, Cleves MA. The Mentor Alpha 1 Penile Prosthesis With Reservoir Lock-out Valve: Effective Prevention of Auto-inflation With Improved Capability For Ectopic Reservoir Placement. J Urol. 2002;168(4):1475-1478. DOI: 10.1097\/01.ju.0000030005.29170.c2\n\n[2] Hollenbeck BK, Miller DC, Ohl DA. The utility of lockout valve reservoirs in preventing autoinflation in penile prostheses. Int Urol Nephrol. 2002;34(3):379-83. DOI: 10.1023\/a:1024439705539\n\n[3] Ivan S, Pryor J, Maffucci F, Simhan J. Reservoir placement options: a state of the art review. Int J Impot Res. 2025. DOI: 10.1038\/s41443-025-01082-x","gt-clinical-context":"<p>A v\u00e1lvula de bloqueio \u00e9 usada principalmente em pr\u00f3teses penianas infl\u00e1veis de tr\u00eas pe\u00e7as para o tratamento da disfun\u00e7\u00e3o er\u00e9til.<span class=\"superscript\">1<\/span> Essa inova\u00e7\u00e3o foi introduzida pela primeira vez em 2000 no reservat\u00f3rio do dispositivo Mentor Alpha 1 (Mentor Corporation, Santa B\u00e1rbara, CA, EUA, posteriormente adquirido pela Coloplast Corporation).<span class=\"superscript\">3<\/span><\/p>\n \n <p>O significado cl\u00ednico da v\u00e1lvula de bloqueio torna-se particularmente evidente em pacientes com espa\u00e7o retrop\u00fabico cicatrizado, como aqueles que foram submetidos a prostatectomia radical, cistectomia ou radioterapia.<span class=\"superscript\">2<\/span> Nesses pacientes, a v\u00e1lvula de bloqueio oferece ao cirurgi\u00e3o de implante peniano uma menor probabilidade de autoinfla\u00e7\u00e3o com a coloca\u00e7\u00e3o de reservat\u00f3rio ect\u00f3pico.<span class=\"superscript\">1<\/span><\/p>\n \n <p>Antes da introdu\u00e7\u00e3o das v\u00e1lvulas de bloqueio, a autoinfla\u00e7\u00e3o foi relatada em aproximadamente 11% dos casos, com 2% necessitando de revis\u00e3o cir\u00fargica.<span class=\"superscript\">1<\/span> Estudos demonstraram que a implementa\u00e7\u00e3o de v\u00e1lvulas de bloqueio reduziu a incid\u00eancia de autoinfla\u00e7\u00e3o para 1,3-3%.<span class=\"superscript\">1,3<\/span> Em um estudo comparativo, apenas 2 pacientes (1,3%) com v\u00e1lvula de bloqueio queixaram-se inicialmente de autoinfla\u00e7\u00e3o, e o problema foi resolvido ap\u00f3s instru\u00e7\u00f5es sobre como operar o dispositivo, em compara\u00e7\u00e3o com 11% dos pacientes com reservat\u00f3rios padr\u00e3o que experimentaram autoinfla\u00e7\u00e3o.<span class=\"superscript\">1<\/span><\/p>\n \n <p>O desenvolvimento de v\u00e1lvulas de bloqueio tamb\u00e9m permitiu a evolu\u00e7\u00e3o de t\u00e9cnicas de coloca\u00e7\u00e3o alternativa de reservat\u00f3rio (ARP), pois permitem maior press\u00e3o ambiente no sistema sem causar autoinfla\u00e7\u00e3o.<span class=\"superscript\">3<\/span> Isso ampliou as op\u00e7\u00f5es cir\u00fargicas, especialmente para pacientes com anatomia p\u00e9lvica hostil ou cirurgias p\u00e9lvicas anteriores.<span class=\"superscript\">3<\/span><\/p>\n<p>O mecanismo de bloqueio \u00e9 ativado automaticamente ao final da desinfla\u00e7\u00e3o, mantendo o estado fl\u00e1cido at\u00e9 que o paciente comprima intencionalmente a bomba para infla\u00e7\u00e3o. Esta tecnologia reduziu significativamente a incid\u00eancia de autoinfla\u00e7\u00e3o, que era um problema frequente em gera\u00e7\u00f5es anteriores de dispositivos. O paciente deve ser orientado sobre o funcionamento da v\u00e1lvula durante o treinamento p\u00f3s-operat\u00f3rio para opera\u00e7\u00e3o adequada do dispositivo.<\/p>","gt-related-evidence":null,"gt-featured":true,"gt-ai-referenced":false,"gt-view-count":64},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.7 (Yoast SEO v27.7) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>V\u00e1lvula de Bloqueio: Pr\u00f3tese Peniana Infl\u00e1vel | Rigicon<\/title>\n<meta name=\"description\" content=\"Saiba sobre a v\u00e1lvula de bloqueio da pr\u00f3tese peniana infl\u00e1vel. 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