Experimental determination of the suture behavior of aortic tissue in comparison to 3D printed silicone modelling material

Riedle H, Chaban R, Ghazy A, Piplat C, Dorweiler B, Franke J (2020)

Publication Type: Journal article

Publication year: 2020

Journal

Journal of the Mechanical Behavior of Biomedical Materials Elsevier

Book Volume: 112

Article Number: 104033

DOI: 10.1016/j.jmbbm.2020.104033

Abstract

The imitation of biological tissue in a synthetic physical model can benefit many medical applications, e.g. pre surgical planning or education. For a quantitative validation of the model's mechanical behavior, standardized testing on both, the biological original and the artificial material, is necessary. In four parts, this study focuses on the biomechanical analysis of the impact of sutures for aortic modelling using 3D printed silicone. Testing methods are developed and executed on biological and synthetic samples. The first part is the determination of the pullout strength of a single stitch. The second part is the investigation of the reduction of the tensile strength and elongation of tensile bars due to stitching. Third, the tensile testing of biological and artificial vessels repaired with an anastomosis gives information about the transferability to real surgical applications. A qualitative feedback study with surgical experts concludes the evaluation. The study reveals that the pullout strength is independent from the fiber or notch direction, but that repaired aortic tensile bars show a dependency on the fiber direction of the tissue. Additionally, the circular seam of the anastomosis provides a more stable connection than multiple single stitches. For the artificial models, the mechanical behavior mainly depends on the mechanical properties of the base silicone, here represented by the Shore A hardness, rather than the manufacturing process. When compared to the biological original the most similar material varies depending on the mechanical property in focus.

Authors with CRIS profile

Hannah Riedle Lehrstuhl für Fertigungsautomatisierung und Produktionssystematik (FAPS) Charlotte Piplat Lehrstuhl für Fertigungsautomatisierung und Produktionssystematik (FAPS) Jörg Franke Lehrstuhl für Fertigungsautomatisierung und Produktionssystematik (FAPS)

Involved external institutions

Universitätsmedizin der Johannes Gutenberg-Universität Mainz DE Germany (DE) Universitätsklinikum Köln DE Germany (DE)

How to cite

APA:

Riedle, H., Chaban, R., Ghazy, A., Piplat, C., Dorweiler, B., & Franke, J. (2020). Experimental determination of the suture behavior of aortic tissue in comparison to 3D printed silicone modelling material. Journal of the Mechanical Behavior of Biomedical Materials, 112. https://doi.org/10.1016/j.jmbbm.2020.104033

MLA:

Riedle, Hannah, et al. "Experimental determination of the suture behavior of aortic tissue in comparison to 3D printed silicone modelling material." Journal of the Mechanical Behavior of Biomedical Materials 112 (2020).

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