Tornillo intrapedicular y prisionero. Análisis por el Método de Elementos Finitos//Intrapedicular screw and stud. Finite Element Analysis

Authors

  • Javier Antonio Cárdenas-Oliveros Universidad Politécnica del Estado Aragua Federico Brito Figueroa. Aragua.

Abstract

Se analizó mediante el método de elementos finitos el tornillo intrapedicular fusión 6,3 mm y al prisionero, diseñado y fabricado por la empresa CALVENT-Medical, como parte de un conjunto denominado tornillo – retén – tulipa – prisionero con fines de fijación del raquis. Se determinó mediante análisis estático lineal las cargas con el criterio de Von Mises que producen el inicio de la deformación plástica permanente en la zona del cuello del prisionero con cargas torsionales en la cabeza. Luego mediante un análisis elasto plástico no lineal, se estimó la carga necesaria para producir la ruptura. De manera equivalente se estimaron en el Tornillo Intrapedicular con análisis estático lineal las cargas axiales, de flexión y torsión que producen la fluencia, donde además se incorpora un análisis dinámico para determinar la vida a fatiga del mismo, estimándose las cargas alternantes críticas que inician la vida infinita.

Palabras claves: tornillo intrapedicular, columna, biomecánica, análisis elementos finitos.
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Abstract

It was analyzed by finite element method Screw Intrapedicular Fusion 6.3 mm and the Prisoner, designed and manufactured by CALVENT-Medicalas part of a package called screw - catch - tulip - prisoner for attachment of the spine. Loads the criterion of Von Mises, produce the onset of permanent plastic deformation in the area of the Prisoner neck torsional loads on the head, then with a nonlinear elasto plastic analysis was determined by linear static analysis, estimated the load required to cause rupture. Equivalently were estimated Screw Intrapedicular linear static analysis axial loads, bending and torsion producing creep, where also a dynamic analysis is incorporated to determine the fatigue life thereof, estimating the alternating critical loads that initiate endless life.

Key words: intrapedicular screw, column, biomechanics, finite element analysis

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Published

2017-09-02

How to Cite

1.
Cárdenas-Oliveros JA. Tornillo intrapedicular y prisionero. Análisis por el Método de Elementos Finitos//Intrapedicular screw and stud. Finite Element Analysis. Ing. Mec. [Internet]. 2017 Sep. 2 [cited 2025 Sep. 13];20(3):129-35. Available from: https://ingenieriamecanica.cujae.edu.cu/index.php/revistaim/article/view/568

Issue

Vol. 20 No. 3 (2017): septiembre-diciembre

Section

Original article

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