<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>1815-5944</journal-id>
<journal-title><![CDATA[Ingeniería Mecánica]]></journal-title>
<abbrev-journal-title><![CDATA[Ingeniería Mecánica]]></abbrev-journal-title>
<issn>1815-5944</issn>
<publisher>
<publisher-name><![CDATA[Facultad de Ingeniería Mecánica. Instituto Superior Politécnico "José Antonio Echeverría"]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1815-59442024000100027</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Propuesta de diseño y modelación de un stent valvular aórtico expandible por balón]]></article-title>
<article-title xml:lang="en"><![CDATA[Design and modeling proposal for a balloon expandable aortic valve stent]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Abad-Rodríguez]]></surname>
<given-names><![CDATA[Rut Lay]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Díaz-Roller]]></surname>
<given-names><![CDATA[Yenisel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Vasallo-Peraza]]></surname>
<given-names><![CDATA[Roman]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Carvajal-de la Osa]]></surname>
<given-names><![CDATA[Janet]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Figueroa-Hernández]]></surname>
<given-names><![CDATA[Carlos]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rivas-Gamallo]]></surname>
<given-names><![CDATA[Alejandro]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rodríguez-Moliner]]></surname>
<given-names><![CDATA[Tania]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pantaleón-Matamoros]]></surname>
<given-names><![CDATA[Efraín]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Tecnológica de la Habana José Antonio Echeverría Facultad de Ingeniería Automática y Biomédica ]]></institution>
<addr-line><![CDATA[La Habana ]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Hospital Ramón González Coro Servicio Nacional de Cardiopatía ]]></institution>
<addr-line><![CDATA[La Habana ]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Tecnológica de la Habana José Antonio Echeverría Facultad de Ingeniería Mecánica ]]></institution>
<addr-line><![CDATA[La Habana ]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidade Federal do Rio Grande do Norte  ]]></institution>
<addr-line><![CDATA[Natal Rio Grande do Norte]]></addr-line>
<country>Brasil</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>04</month>
<year>2024</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>04</month>
<year>2024</year>
</pub-date>
<volume>27</volume>
<numero>1</numero>
<fpage>27</fpage>
<lpage>34</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S1815-59442024000100027&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S1815-59442024000100027&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S1815-59442024000100027&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen El presente trabajo consistió en proponer un nuevo diseño de stent valvular aórtico con balón expandible para su uso en pacientes con estenosis valvular aórtica. Se realizaron simulaciones de elementos finitos para determinar las tensiones y deformaciones de Von Mises y con ello seleccionar los parámetros de diseño de este dispositivo, que permitirán su fabricación y adecuado funcionamiento. La condición simétrica del stent facilitó el proceso de modelado, así como la determinación del menor diámetro reducido del stent, condición necesaria para que se traslade con seguridad dentro de la arteria. En este análisis se utilizó acero inoxidable 316L, se consideró un comportamiento elastoplástico, isotrópico y homogéneo del material, variando también el espesor y radio de curvatura en los extremos de las secciones del stent. Se aplicaron cargas en las uniones de estas secciones, obteniendo tensiones equivalentes por debajo del límite de resistencia del material y por encima del límite elástico. La mayor reducción del diámetro del stent se obtuvo con un espesor de alambre de 0,5 mm y un radio de curvatura de 0,5 mm. El diámetro medio del dispositivo abierto (22,987 mm) se redujo a 7,65 mm al aplicar una presión de 43,8 MPa.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract The present work consists of proposing a new design of balloon-expandable aortic valve stent for use in patients with aortic valve stenosis. Finite element simulations were carried out to determine the Von Mises stresses and deformations and thereby select the design parameters of this device, which will allow its manufacturing and proper operation. The symmetrical condition of the stent facilitated the modeling process, as well as the determination of the smallest reduced diameter of the stent, a necessary condition for it to be moved safely within the artery. In this analysis, 316L stainless steel was used, an elastoplastic, isotropic and homogeneous behavior of the material was considered, also varying the thickness and radius of curvature at the ends of the stent sections. Loads were applied at the joints of these sections, obtaining equivalent stresses below the resistance limit of the material and above the elastic limit. The greatest reduction in stent diameter was obtained with a wire thickness of 0.5 mm and a radius of curvature of 0.5 mm. The mean diameter of the open device (22.987 mm) was reduced to 7.65 mm when applying a pressure of 43.8 MPa.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[diámetro reducido del stent]]></kwd>
<kwd lng="es"><![CDATA[elementos finitos]]></kwd>
<kwd lng="es"><![CDATA[stent expandible]]></kwd>
<kwd lng="en"><![CDATA[reduced stent diameter]]></kwd>
<kwd lng="en"><![CDATA[finite elements]]></kwd>
<kwd lng="en"><![CDATA[expandable stent]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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