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Hyperelastic characterization of synthetic mesh for abdominal wall hernia repair

Published online by Cambridge University Press:  21 October 2019

Javier Ortiz Ortiz
Affiliation:
Mechanical Engineering Department, Laboratory of Materials, Universidad Michoacana de San Nicolas de Hidalgo
Georgina Carbajal de la Torre*
Affiliation:
Mechanical Engineering Department, Laboratory of Materials, Universidad Michoacana de San Nicolas de Hidalgo
Miguel Villagómez Galindo
Affiliation:
Mechanical Engineering Department, Laboratory of Materials, Universidad Michoacana de San Nicolas de Hidalgo
Marco Antonio Espinosa Medina
Affiliation:
Mechanical Engineering Department, Laboratory of Materials, Universidad Michoacana de San Nicolas de Hidalgo
Hilda Aguilar Rodriguez
Affiliation:
Mechanical Engineering Department, Laboratory of Materials, Universidad Michoacana de San Nicolas de Hidalgo
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Abstract

Hernia is defined as the protrusion of one or several internal organs through an opening in the cavity that contains them due to a tissue defect, abdominal wall surgery by means of synthetic meshes is the most common method used for hernia repair, however, postsurgical effects can range from some discomfort, to chronic pain and even the reappearance of the hernia due to a poor mechanical adaptability between the synthetic tissue and the host tissue. The knowledge of the mechanical properties of the materials involved in hernia repair is fundamental in the understanding and subsequent solution of this type of problems. In this work, experimental data were obtained by means of uniaxial tensile tests in two perpendicular directions of commercial meshes used in hernia repair. The tests were carried out on the UniVert® machine of the CellScale® brand. Anisotropic mechanical behavior is observed due to the structure of the mesh and the interaction between each of the yarns that make it up. The data found vary with respect to the direction of traction and also has non-linear hyperelastic behavior, so the adjustment of curves was made through a hyperelastic model in the COMSOL Multiphysics® software through the Levenberg-Marquardt Algorithm for the characterization of these materials.

Type
Articles
Copyright
Copyright © Materials Research Society 2019 

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