{"id":11193,"date":"2026-01-08T08:17:56","date_gmt":"2026-01-08T07:17:56","guid":{"rendered":"https:\/\/prototal.info\/cases\/minskad-risk-for-stroke-med-hjalp-av-3d-printing-2\/"},"modified":"2026-03-18T15:38:53","modified_gmt":"2026-03-18T14:38:53","slug":"qatna","status":"publish","type":"case_studies","link":"https:\/\/prototal.info\/se\/referenser\/qatna\/","title":{"rendered":"Minskad risk f\u00f6r stroke med hj\u00e4lp av 3D-printing"},"content":{"rendered":"\n<p>Qatna Medical closes the left atrial appendage with an implant to protect against strokes. The operation is successful thanks to the handle made from additively manufactured plastic components from our Austrian site\u00a0<a href=\"https:\/\/www.1zu1.eu\">1zu1scale<\/a>. These components mark a milestone for <a href=\"https:\/\/prototal.info\/se\/tjanster\/industriell-3d-print\/\">Industrial 3D Printing<\/a> and the <a href=\"https:\/\/prototal.info\/se\/losningar\/industrier\/medicin\/\">medical sector<\/a>: sterilisable, production-ready, and regulatory-compliant components are now feasible.<\/p>\n\n<p><strong>Plats Hechingen, Tyskland.<\/strong>  Denna lilla stad i utkanten av Schw\u00e4bische Alb \u00e4r k\u00e4nd f\u00f6r sin Medical Valley. H\u00e4r utvecklar m\u00e5nga f\u00f6retag och start-ups innovativa medicintekniska produkter. Qatna Medical har sedan starten 2019 helt specialiserat sig p\u00e5 behandling av strukturella hj\u00e4rtsjukdomar. Detta g\u00f6r det m\u00f6jligt f\u00f6r personer med f\u00f6rmaksflimmer att skydda sig mot stroke och undvika livsl\u00e5ng anv\u00e4ndning av blodf\u00f6rtunnande medicin. Till skillnad fr\u00e5n konventionella implantat bygger denna nya metod p\u00e5 biologisk v\u00e4vnad i st\u00e4llet f\u00f6r syntetiskt material. Detta \u00e4r t\u00e4nkt att f\u00f6rb\u00e4ttra kompatibiliteten i kroppen.     <\/p>\n\n<p>Visionen \u00e4r att patienter som behandlas med implantatet ska beh\u00f6va ta f\u00e4rre mediciner, vilket kan f\u00f6rb\u00e4ttra deras livskvalitet. Detta m\u00e5ste dock fortfarande bevisas efter att den kliniska pr\u00f6vningen har slutf\u00f6rts. Plastdelar fr\u00e5n en 3D-skrivare g\u00f6r ocks\u00e5 detta m\u00f6jligt. <a href=\"https:\/\/prototal.info\/se\/om-oss\/sajter\/osterrike\/\">1zu1<\/a> har skapat ett kompakt handtag f\u00f6r implantatins\u00e4ttningssystemet och utnyttjat SLS-teknikens fulla potential. Sex kemiskt utj\u00e4mnade och delvis utskrivna komponenter passar perfekt ihop, \u00e4r l\u00e4ckages\u00e4kra och l\u00e4tta att reng\u00f6ra. Certifiering enligt EN ISO 13485 underl\u00e4ttar ocks\u00e5 godk\u00e4nnandeprocessen.    <\/p>\n\n<p>Utvecklingsingenj\u00f6r Felix Schneider fr\u00e5n Qatna Medical och Stefan R\u00e4dler, Head of Additive Manufacturing p\u00e5 1zu1, ger en inblick i hur detta flaggskeppsprojekt skapades.<\/p>\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-1 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large is-style-default\"><img data-dominant-color=\"6c5729\" data-has-transparency=\"false\" style=\"--dominant-color: #6c5729;\" loading=\"lazy\" decoding=\"async\" width=\"480\" height=\"480\" data-id=\"5215\" src=\"https:\/\/prototal.info\/app\/uploads\/2025\/12\/qatna-felix-schneider.avif\" alt=\"\" class=\"wp-image-5215 not-transparent\" srcset=\"https:\/\/prototal.info\/app\/uploads\/2025\/12\/qatna-felix-schneider.avif 480w, https:\/\/prototal.info\/app\/uploads\/2025\/12\/qatna-felix-schneider-300x300.avif 300w, https:\/\/prototal.info\/app\/uploads\/2025\/12\/qatna-felix-schneider-150x150.avif 150w\" sizes=\"auto, (max-width: 480px) 100vw, 480px\" \/><figcaption class=\"wp-element-caption\">Felix Schneider, utvecklingsingenj\u00f6r p\u00e5 Qatna Medical<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img data-dominant-color=\"79797b\" data-has-transparency=\"false\" style=\"--dominant-color: #79797b;\" loading=\"lazy\" decoding=\"async\" width=\"480\" height=\"480\" data-id=\"5208\" src=\"https:\/\/prototal.info\/app\/uploads\/2025\/12\/1zu1-stefan-radler.avif\" alt=\"\" class=\"wp-image-5208 not-transparent\" srcset=\"https:\/\/prototal.info\/app\/uploads\/2025\/12\/1zu1-stefan-radler.avif 480w, https:\/\/prototal.info\/app\/uploads\/2025\/12\/1zu1-stefan-radler-300x300.avif 300w, https:\/\/prototal.info\/app\/uploads\/2025\/12\/1zu1-stefan-radler-150x150.avif 150w\" sizes=\"auto, (max-width: 480px) 100vw, 480px\" \/><figcaption class=\"wp-element-caption\">Stefan R\u00e4dler, chef f\u00f6r Additive Manufacturing p\u00e5 1zu1<\/figcaption><\/figure>\n<\/figure>\n\n<h2 class=\"wp-block-heading\"><strong>3D-printing erbjuder m\u00e5nga f\u00f6rdelar &#8211; s\u00e4rskilt f\u00f6r sm\u00e5 produktionsserier, t.ex. inom medicinteknik<\/strong><\/h2>\n\n<h3 class=\"wp-block-heading\"><strong>Vad var den avg\u00f6rande faktorn f\u00f6r Qatna Medical?<\/strong><\/h3>\n\n<p><strong>Felix Schneider:<\/strong> Ur en rent geometrisk och funktionell synvinkel \u00e4r handtaget idealiskt f\u00f6r 3D-printing. Under operationen kommer det i direkt kontakt med blodomloppet. Kriticiteten \u00e4r d\u00e4rf\u00f6r ganska l\u00e5g. Komponenterna f\u00e5r d\u00e4rf\u00f6r &#8221;bara&#8221; vara tillverkade av biokompatibla material och vara steriliserbara. Certifikat fr\u00e5n leverant\u00f6ren, t.ex. EN ISO 13485-certifiering, \u00e4r till stor hj\u00e4lp vid godk\u00e4nnandet. Detta minskar det byr\u00e5kratiska arbetet och sparar v\u00e4rdefull tid. Om dessa krav uppfylls &#8211; och 1zu1 kan g\u00f6ra det &#8211; \u00e4r kvalitetsstyrningen uppfylld. Men f\u00f6r att ta steget fr\u00e5n konventionell tillverkning till 3D-printing kr\u00e4vs det fortfarande n\u00e5gra goda argument internt.       <\/p>\n\n<h3 class=\"wp-block-heading\"><strong>Vilka skulle de vara?<\/strong><\/h3>\n\n<p><strong>Felix Schneider:<\/strong> Det hela m\u00e5ste vara praktiskt och s\u00e4kert. Bepr\u00f6vade processer som formsprutning \u00e5tnjuter ett stort f\u00f6rtroende. 3D-utskrifter m\u00e5ste fortfarande f\u00f6rtj\u00e4na det f\u00f6rtroendet, och det beh\u00f6vs pionj\u00e4rer f\u00f6r att g\u00f6ra det. Jag t\u00e4nkte: ett ungt start-up-f\u00f6retag och 3D-utskrifter passar bra ihop. 1zu1 har ett gott rykte i Medical Valley Hechingen. S\u00e5 2022 anm\u00e4lde jag mig till den tv\u00e5 dagar l\u00e5nga workshopen &#8221;Additiv tillverkning&#8221; i Dornbirn i \u00d6sterrike. Det var verkligen sp\u00e4nnande, den perfekta introduktionen.      <\/p>\n\n<h3 class=\"wp-block-heading\">Vilket merv\u00e4rde tillf\u00f6rde AM-workshopen projektet?<\/h3>\n\n<p><strong>Felix Schneider:<\/strong> Markus Schrittwieser (innovationschef p\u00e5 1zu1) tog mycket tid p\u00e5 sig att f\u00f6rklara teknikens m\u00f6jligheter och begr\u00e4nsningar p\u00e5 ett mycket tydligt s\u00e4tt. Vi diskuterade sedan den specifika monteringen. Till exempel utesl\u00f6ts f\u00e4rgning snabbt eftersom effekterna p\u00e5 biokompatibiliteten fortfarande \u00e4r alltf\u00f6r ok\u00e4nda. Jag uppskattade verkligen det \u00f6ppna och \u00e4rliga f\u00f6rh\u00e5llningss\u00e4ttet. Senast vid denna tidpunkt stod det klart f\u00f6r mig att jag ville tillverka handtaget med hj\u00e4lp av 3D-printing. Det var v\u00e4rt det.     <\/p>\n\n<h3 class=\"wp-block-heading\"><strong>Vilka var konstruktionskraven?<\/strong><\/h3>\n\n<p><strong>Felix Schneider:<\/strong> Handtaget best\u00e5r av sex enskilda delar, inklusive den tv\u00e5delade k\u00e4rnan med l\u00e5smekanismen. De m\u00e5ste se bra ut och k\u00e4nnas h\u00f6gkvalitativa. Sjukv\u00e5rdspersonal \u00e4r ju vana vid sl\u00e4ta ytor. Ur rent teknisk synvinkel \u00e4r det viktigt att alla sex komponenterna sitter t\u00e4tt ihop s\u00e5 att kontakttrycket f\u00f6r kateterslangen blir korrekt. Vi var tvungna att g\u00e5 igenom n\u00e5gra iterationer f\u00f6r att uppn\u00e5 den n\u00f6dv\u00e4ndiga t\u00e4theten. Det var d\u00e4r 3D-printing kom v\u00e4l till pass. Med denna verktygsfria process kan konstruktionen optimeras snabbt och kostnadseffektivt. S\u00e5 snart \u00e4ndringen \u00e4r ritad skrivs den ut och testas igen. Denna flexibilitet sparade oss tid och pengar. Ett exempel: I b\u00f6rjan av 2025 optimerade vi konstruktionen \u00e4nnu en g\u00e5ng. Detta gjorde att vi kunde f\u00f6rb\u00e4ttra m\u00e5ttnoggrannheten och f\u00f6rkorta spolkanalen. Detta f\u00f6renklar reng\u00f6ringen f\u00f6re montering i v\u00e5rt renrum.           <\/p>\n\n<h3 class=\"wp-block-heading\">Vilka andra f\u00f6rdelar erbj\u00f6d tekniken?<\/h3>\n\n<p><strong>Felix Schneider:<\/strong> Fr\u00e5n utsidan ser delarna ganska oansenliga ut, men bakom dem d\u00f6ljer sig extremt komplexa geometrier som inv\u00e4ndiga g\u00e4ngor, undersk\u00e4rningar och smala kanaler. Dessutom finns det betydande skillnader i v\u00e4ggtjocklek. Allt detta skulle ha varit mycket sv\u00e5rt att \u00e5stadkomma med formsprutning &#8211; och skulle ha inneburit h\u00f6ga verktygskostnader och komplicerad montering. 3D-printing erbjuder fullst\u00e4ndig geometrisk designfrihet. Vi har utnyttjat detta till fullo.    <\/p>\n\n<h3 class=\"wp-block-heading\"><strong>Vad mer kan 1zu1 hj\u00e4lpa till med?<\/strong><\/h3>\n\n<p><strong>Stefan R\u00e4dler:<\/strong> V\u00e5r standard \u00e4r renrumskvalitet, precis som vi erbjuder inom formsprutning. F\u00f6r att uppn\u00e5 detta samarbetar vi med en extern partner. De reng\u00f6r alla komponenter och returnerar dem till oss dubbelf\u00f6rpackade. Med ISO 13485-certifieringen, som \u00e4r s\u00e4rskilt relevant f\u00f6r medicinska produkter, har vi tagit ytterligare ett viktigt steg fram\u00e5t. Qatna Medical k\u00f6per ocks\u00e5 nio formsprutade delar fr\u00e5n oss. Vi erbjuder d\u00e4rf\u00f6r hela plastpaketet som en effektiv hybridl\u00f6sning. Vilken process som \u00e4r l\u00e4mplig avg\u00f6rs utifr\u00e5n detaljens anv\u00e4ndningsomr\u00e5de och krav.      <\/p>\n\n<h3 class=\"wp-block-heading\"><strong>Vad \u00e4r n\u00e4sta steg?<\/strong><\/h3>\n\n<p><strong>Felix Schneider:<\/strong> Med den slutliga utformningen av leveranssystemet g\u00e5r vi nu vidare till verifiering och validering. F\u00f6r dragprov, korrosions- och l\u00e4ckagetester kommer vi att beh\u00f6va cirka 2.000 enheter under de kommande m\u00e5naderna. Om allt g\u00e5r smidigt kommer de kliniska studierna och godk\u00e4nnandeprocessen att f\u00f6lja.  <\/p>\n\n<p><\/p>\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>1zu1 t\u00e4nker tillsammans med oss. Bra f\u00f6rslag, \u00e4rlig och \u00f6ppen kommunikation samt personliga m\u00f6ten g\u00f6r det l\u00e4ttare f\u00f6r oss att f\u00f6rverkliga v\u00e5ra id\u00e9er och v\u00e5r design. Den h\u00e4r tj\u00e4nsten var en ny erfarenhet f\u00f6r mig som utvecklare. Det \u00e4r precis s\u00e5 h\u00e4r jag f\u00f6rest\u00e4ller mig att en l\u00f6sningsorienterad tillverkningspartner ska vara.   <br \/><strong>&#8211; Felix Schneider, utvecklingsingenj\u00f6r p\u00e5 Qatna Medical GmbH<\/strong><\/p>\n<\/blockquote>\n\n<p><em>I samtal: Felix Schneider \u00e4r utvecklingsingenj\u00f6r p\u00e5 Qatna Medical, d\u00e4r han ansvarar f\u00f6r alla plastkomponenter. P\u00e5 1zu1 s\u00e4kerst\u00e4ller projektledaren Stefan R\u00e4dler att de 3D-utskrivna delarna implementeras p\u00e5 ett smidigt s\u00e4tt. Joshua K\u00f6b genomf\u00f6rde intervjun<\/em>.<\/p>\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Qatna Medical closes the left atrial appendage with an implant to protect against strokes. The operation is successful thanks to the handle made from additively manufactured plastic components from our Austrian site\u00a01zu1scale. These components mark a milestone for Industrial 3D Printing and the medical sector: sterilisable, production-ready, and regulatory-compliant components are now feasible. Plats Hechingen, [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"closed","template":"","categories":[173],"class_list":["post-11193","case_studies","type-case_studies","status-publish","hentry","category-medical-applications"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Minskad risk f\u00f6r stroke med hj\u00e4lp av 3D-printing | Prototal<\/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:\/\/prototal.info\/se\/referenser\/qatna\/\" \/>\n<meta property=\"og:locale\" content=\"sv_SE\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Minskad risk f\u00f6r stroke med hj\u00e4lp av 3D-printing | Prototal\" \/>\n<meta property=\"og:description\" content=\"Qatna Medical closes the left atrial appendage with an implant to protect against strokes. The operation is successful thanks to the handle made from additively manufactured plastic components from our Austrian site\u00a01zu1scale. These components mark a milestone for Industrial 3D Printing and the medical sector: sterilisable, production-ready, and regulatory-compliant components are now feasible. 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The operation is successful thanks to the handle made from additively manufactured plastic components from our Austrian site\u00a01zu1scale. These components mark a milestone for Industrial 3D Printing and the medical sector: sterilisable, production-ready, and regulatory-compliant components are now feasible. 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