{"id":9498,"date":"2021-01-06T10:30:54","date_gmt":"2021-01-06T09:30:54","guid":{"rendered":"https:\/\/ggba.swiss\/scientifiques-de-lepfl-miniaturisent-techniques-endovasculaires-acceder-aux-capillaires\/"},"modified":"2023-07-04T13:43:31","modified_gmt":"2023-07-04T11:43:31","slug":"scientifiques-de-lepfl-miniaturisent-techniques-endovasculaires-acceder-aux-capillaires","status":"publish","type":"post","link":"https:\/\/ggba.swiss\/fr\/scientifiques-de-lepfl-miniaturisent-techniques-endovasculaires-acceder-aux-capillaires\/","title":{"rendered":"Des scientifiques de l\u2019EPFL miniaturisent des techniques endovasculaires pour acc\u00e9der aux capillaires"},"content":{"rendered":"

Des scientifiques de l\u2019EPFL ont con\u00e7u une technique permettant de faire naviguer un appareil \u00e9lectronique, plus petit qu\u2019un cheveu humain, \u00e0 l’int\u00e9rieur des vaisseaux sanguins et d’atteindre les art\u00e9rioles. Des tests in vivo constituent la prochaine \u00e9tape de la recherche.<\/h4>\n

Le syst\u00e8me cardiovasculaire utilise le sang qui circule dans nos veines et nos art\u00e8res pour transporter l’oxyg\u00e8ne et les nutriments vers tous les tissus du corps. Des scientifiques de l’EPFL<\/a> ont d\u00e9cid\u00e9 d’exploiter l’\u00e9nergie hydrocin\u00e9tique (\u00e9nergie m\u00e9canique r\u00e9sultant du mouvement des liquides) pour atteindre certains endroits du corps humain sans avoir recours \u00e0 des m\u00e9thodes invasives.<\/p>\n

Les m\u00e9decins peuvent acc\u00e9der aux art\u00e8res des patients en poussant et en tournant des fils de guidage, puis en faisant glisser des tubes creux appel\u00e9s cath\u00e9ters. Cependant, lorsque les art\u00e8res commencent \u00e0 se r\u00e9tr\u00e9cir, en particulier dans le cerveau, cette technique d’avancement r\u00e9v\u00e8le ses limites. Les scientifiques du Laboratoire des Syst\u00e8mes MicroBioRobotiques (MICROBS<\/a>) de l’EPFL ont mis au point un dispositif microscopique qui peut \u00eatre introduit dans les capillaires avec une rapidit\u00e9 et une facilit\u00e9 sans pr\u00e9c\u00e9dent.<\/p>\n

Une miniaturisation des techniques endovasculaires<\/h4>\n

Le dispositif se compose d’une pointe et d’un corps ultraflexible en polym\u00e8res biocompatibles. Comme aucune force m\u00e9canique n’est appliqu\u00e9e directement sur la paroi du vaisseau, le risque de causer des dommages est tr\u00e8s faible. De plus, l’exploitation du flux sanguin pourrait r\u00e9duire la dur\u00e9e de la proc\u00e9dure de plusieurs heures \u00e0 quelques minutes.<\/p>\n

Les chercheurs de la Facult\u00e9 d’ing\u00e9nierie de l’EPFL (STI<\/a>) ont test\u00e9 le dispositif \u00e0 l’int\u00e9rieur de capillaires artificiels. La prochaine \u00e9tape pour les chercheurs vaudois sera des tests sur des animaux avec des syst\u00e8mes d’imagerie m\u00e9dicale de pointe. Les scientifiques esp\u00e8rent \u00e9galement d\u00e9velopper d’autres dispositifs avec une gamme d’actionneurs et de capteurs embarqu\u00e9s.<\/p>\n","protected":false},"excerpt":{"rendered":"

Des scientifiques de l\u2019EPFL ont con\u00e7u une technique permettant de faire naviguer un appareil \u00e9lectronique, plus petit qu\u2019un cheveu humain, \u00e0 l’int\u00e9rieur des vaisseaux sanguins et d’atteindre les art\u00e9rioles. Des tests in vivo constituent la prochaine \u00e9tape de la recherche. Le syst\u00e8me cardiovasculaire utilise le sang qui circule dans nos veines et nos art\u00e8res pour […]<\/p>\n","protected":false},"author":3,"featured_media":9499,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"mc4wp_mailchimp_campaign":[],"footnotes":""},"categories":[843],"tags":[1060,1062],"class_list":["post-9498","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sciences-de-la-vie","tag-medtech-fr","tag-micronano-technology-fr"],"acf":[],"yoast_head":"\nDes scientifiques de l\u2019EPFL miniaturisent des techniques endovasculaires pour acc\u00e9der aux capillaires - Greater Geneva Bern area<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/ggba.swiss\/fr\/scientifiques-de-lepfl-miniaturisent-techniques-endovasculaires-acceder-aux-capillaires\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Des scientifiques de l\u2019EPFL miniaturisent des techniques endovasculaires pour acc\u00e9der aux capillaires - Greater Geneva Bern area\" \/>\n<meta property=\"og:description\" content=\"Des scientifiques de l\u2019EPFL ont con\u00e7u une technique permettant de faire naviguer un appareil \u00e9lectronique, plus petit qu\u2019un cheveu humain, \u00e0 l’int\u00e9rieur des vaisseaux sanguins et d’atteindre les art\u00e9rioles. Des tests in vivo constituent la prochaine \u00e9tape de la recherche. 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