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Needle penetration test - qualifying examination of 3D printable silicones for vascular models in surgical practice

BACKGROUND: During cardiogenic shock blood circulation is minimal in the human body and does not suffice to survive. The extracorporeal life support system (ECLS) acts as a miniature heart-lung-machine that can be temporarily implanted over major vessels e.g. at the groin of the patient to bridge ca...

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Autores principales: von Steuben, Thore, Salewski, Christoph, Xepapadeas, Alexander B., Mutschler, Moritz, Spintzyk, Sebastian
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer International Publishing 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8362236/
https://www.ncbi.nlm.nih.gov/pubmed/34387785
http://dx.doi.org/10.1186/s41205-021-00110-y
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author von Steuben, Thore
Salewski, Christoph
Xepapadeas, Alexander B.
Mutschler, Moritz
Spintzyk, Sebastian
author_facet von Steuben, Thore
Salewski, Christoph
Xepapadeas, Alexander B.
Mutschler, Moritz
Spintzyk, Sebastian
author_sort von Steuben, Thore
collection PubMed
description BACKGROUND: During cardiogenic shock blood circulation is minimal in the human body and does not suffice to survive. The extracorporeal life support system (ECLS) acts as a miniature heart-lung-machine that can be temporarily implanted over major vessels e.g. at the groin of the patient to bridge cardiogenic shock. To perform this procedure in an emergency, a proper training model is desirable. Therefore, a 3-dimensional-printable (3D) material must be found that mimics large vessel needle penetration properties. A suitable test bench for material comparison is desirable. METHODS: A test setup was built, which simulated the clinically relevant wall tension in specimens. The principle was derived from an existing standardized needle penetration test. After design, the setup was fabricated by means of 3D printing and mounted onto an universal testing machine. For testing the setup, a 3D printable polymer with low Shore A hardness and porcine aorta were used. The evaluation was made by comparing the curves of the penetration force to the standardized test considering the expected differences. RESULTS: 3D printing proved to be suitable for manufacturing the test setup, which finally was able to mimic wall tension as if under blood pressure and penetration angle. The force displacement diagrams showed the expected curves and allowed a conclusion to the mechanical properties of the materials. Although the materials forces deviated between the porcine aorta and the Agilus30 polymer, the graphs showed similar but still characteristic curves. CONCLUSIONS: The test bench provided the expected results and was able to show the differences between the two materials. To improve the setup, limitations has been discussed and changes can be implemented without complications. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1186/s41205-021-00110-y.
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spelling pubmed-83622362021-08-17 Needle penetration test - qualifying examination of 3D printable silicones for vascular models in surgical practice von Steuben, Thore Salewski, Christoph Xepapadeas, Alexander B. Mutschler, Moritz Spintzyk, Sebastian 3D Print Med Research BACKGROUND: During cardiogenic shock blood circulation is minimal in the human body and does not suffice to survive. The extracorporeal life support system (ECLS) acts as a miniature heart-lung-machine that can be temporarily implanted over major vessels e.g. at the groin of the patient to bridge cardiogenic shock. To perform this procedure in an emergency, a proper training model is desirable. Therefore, a 3-dimensional-printable (3D) material must be found that mimics large vessel needle penetration properties. A suitable test bench for material comparison is desirable. METHODS: A test setup was built, which simulated the clinically relevant wall tension in specimens. The principle was derived from an existing standardized needle penetration test. After design, the setup was fabricated by means of 3D printing and mounted onto an universal testing machine. For testing the setup, a 3D printable polymer with low Shore A hardness and porcine aorta were used. The evaluation was made by comparing the curves of the penetration force to the standardized test considering the expected differences. RESULTS: 3D printing proved to be suitable for manufacturing the test setup, which finally was able to mimic wall tension as if under blood pressure and penetration angle. The force displacement diagrams showed the expected curves and allowed a conclusion to the mechanical properties of the materials. Although the materials forces deviated between the porcine aorta and the Agilus30 polymer, the graphs showed similar but still characteristic curves. CONCLUSIONS: The test bench provided the expected results and was able to show the differences between the two materials. To improve the setup, limitations has been discussed and changes can be implemented without complications. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1186/s41205-021-00110-y. Springer International Publishing 2021-08-13 /pmc/articles/PMC8362236/ /pubmed/34387785 http://dx.doi.org/10.1186/s41205-021-00110-y Text en © The Author(s) 2021 https://creativecommons.org/licenses/by/4.0/Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/ (https://creativecommons.org/publicdomain/zero/1.0/) ) applies to the data made available in this article, unless otherwise stated in a credit line to the data.
spellingShingle Research
von Steuben, Thore
Salewski, Christoph
Xepapadeas, Alexander B.
Mutschler, Moritz
Spintzyk, Sebastian
Needle penetration test - qualifying examination of 3D printable silicones for vascular models in surgical practice
title Needle penetration test - qualifying examination of 3D printable silicones for vascular models in surgical practice
title_full Needle penetration test - qualifying examination of 3D printable silicones for vascular models in surgical practice
title_fullStr Needle penetration test - qualifying examination of 3D printable silicones for vascular models in surgical practice
title_full_unstemmed Needle penetration test - qualifying examination of 3D printable silicones for vascular models in surgical practice
title_short Needle penetration test - qualifying examination of 3D printable silicones for vascular models in surgical practice
title_sort needle penetration test - qualifying examination of 3d printable silicones for vascular models in surgical practice
topic Research
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8362236/
https://www.ncbi.nlm.nih.gov/pubmed/34387785
http://dx.doi.org/10.1186/s41205-021-00110-y
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