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Carrera San Martin A, García Paez JM, García Sestafe JV, et al. Analysis of shearing stress in the limited durability of bovine pericardium used as a biomaterial. J Mater Sci Mater Med. 1998;9(2):77-81doi: 10.1023/a:1008842914029.
Carrera San Martin, A., García Paez, J. M., García Sestafe, J. V., Herrero, E. J., Navidad, R., Cordón, A., & Castillo-Olivares, J. L. (1998). Analysis of shearing stress in the limited durability of bovine pericardium used as a biomaterial. Journal of materials science. Materials in medicine, 9(2), 77-81. https://doi.org/10.1023/a:1008842914029
Carrera San Martin, A, et al. "Analysis of shearing stress in the limited durability of bovine pericardium used as a biomaterial." Journal of materials science. Materials in medicine vol. 9,2 (1998): 77-81. doi: https://doi.org/10.1023/a:1008842914029
Carrera San Martin A, García Paez JM, García Sestafe JV, Herrero EJ, Navidad R, Cordón A, Castillo-Olivares JL. Analysis of shearing stress in the limited durability of bovine pericardium used as a biomaterial. J Mater Sci Mater Med. 1998 Feb;9(2):77-81. doi: 10.1023/a:1008842914029. PMID: 15348911.
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J Mater Sci Mater Med. 1998 Feb;9(2):77-81. doi: 10.1023/a:1008842914029.

Analysis of shearing stress in the limited durability of bovine pericardium used as a biomaterial.

Journal of materials science. Materials in medicine

A Carrera San Martin, J M García Paez, J V García Sestafe, E J Herrero, R Navidad, A Cordón, J L Castillo-Olivares

Affiliations

  1. Departamento de Mecánica Estructural, Escuela Técnica Superior de Ingenieros Industriales, c/Gutierrez Abascal 2, Madrid, Spain.

PMID: 15348911 DOI: 10.1023/a:1008842914029

Abstract

The objective of the study was to determine the shearing stress exerted by the suture thread under conditions of normal working stress. Thirty-six samples of calf pericardium, similar to that employed in the manufacture of bioprosthetic cardiac valve leaflets, were subjected to tensile testing. Prior to the trial, a continuous suture was sewn in the central zone of each sample, at a 45 degrees angle to the longest axis of the sample, using commercially-available threads (silk, Gore-Tex, Surgilene and nylon). Application of the Mohr circle for combined wear revealed that the shearing stress ranged between 2.68-fold greater (for samples sewn with silk) and 5.48-fold greater (for samples sewn with nylon) than the working tensile stress in the region of the suture. It is concluded that the shearing stress is responsible for the limited durability of sutured samples of calf pericardium prepared to simulate bioprosthetic cardiac valve leaflets.

Copyright 1998 Chapman & Hall

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